web/index.html

   1 <!DOCTYPE html>
   2 <html lang="en">
   3 <head>
   4         <title>netdata dashboard</title>
   5
   6         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   7         <meta charset="utf-8">
   8         <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
   9         <meta name="viewport" content="width=device-width, initial-scale=1">
  10         <meta name="apple-mobile-web-app-capable" content="yes">
  11         <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
  12         <meta name="author" content="costa@tsaousis.gr">
  13
  14         <link rel="shortcut icon" href="images/seo-performance-multi-size.ico">
  15
  16         <link rel="apple-touch-icon" href="images/seo-performance-72.png">
  17         <link rel="apple-touch-icon" sizes="72x72" href="images/seo-performance-72.png">
  18         <link rel="apple-touch-icon" sizes="114x114" href="images/seo-performance-114.png">
  19
  20         <link rel="icon" type="image/png" sizes="512x512" href="images/seo-performance-512.png">
  21         <link rel="icon" type="image/png" sizes="256x256" href="images/seo-performance-256.png">
  22         <link rel="icon" type="image/png" sizes="128x128" href="images/seo-performance-128.png">
  23         <link rel="icon" type="image/png" sizes="64x64" href="images/seo-performance-64.png">
  24         <link rel="icon" type="image/png" sizes="48x48" href="images/seo-performance-48.png">
  25         <link rel="icon" type="image/png" sizes="32x32" href="images/seo-performance-32.png">
  26         <link rel="icon" type="image/png" sizes="24x24" href="images/seo-performance-24.png">
  27         <link rel="icon" type="image/png" sizes="16x16" href="images/seo-performance-16.png">
  28
  29         <meta property="og:locale" content="en_US" />
  30         <meta property="og:image" content="http://my-netdata.io/images/post.png"/>
  31         <meta property="og:url" content="http://my-netdata.io/"/>
  32         <meta property="og:type" content="website"/>
  33         <meta property="og:site_name" content="netdata"/>
  34         <meta property="og:title" content="netdata - real-time performance monitoring, done right!"/>
  35         <meta property="og:description" content="Stunning real-time dashboards, blazingly fast and extremely interactive. Zero configuration, zero dependencies, zero maintenance." />
  36
  37         <style>
  38
  39         /* prevent body from hiding under the navbar */
  40         body {
  41                 padding-top: 50px;
  42         }
  43
  44         .modal-wide .modal-dialog {
  45                 width: 80%;
  46         }
  47
  48         /* fix # anchors scrolling under the navbar
  49            https://github.com/twbs/bootstrap/issues/1768#issuecomment-46519033
  50          */
  51         h1 {
  52                 position: relative;
  53                 z-index: -1;
  54         }
  55         h2 {
  56                 position: relative;
  57                 z-index: -2;
  58         }
  59         h1:before, h2:before {
  60                 display: block;
  61                 content: " ";
  62                 margin-top: -70px;
  63                 height: 70px;
  64                 visibility: hidden;
  65         }
  66
  67         .p {
  68                 display: block;
  69                 margin-top: 15px;
  70         }
  71
  72         .option-row,
  73         .option-control {
  74                 vertical-align: top;
  75                 padding: 10px;
  76                 padding-top: 30px;
  77                 padding-left: 30px;
  78         }
  79
  80         .option-info {
  81                 padding: 10px;
  82         }
  83
  84         .chart-message {
  85                 display: block;
  86                 margin-top: 10px;
  87         }
  88
  89         .container {
  90                 width: 90% !important;
  91         }
  92
  93         #masthead h1 {
  94                 /*font-size: 30px;*/
  95                 line-height: 1;
  96                 padding-top: 30px;
  97         }
  98
  99         #masthead .well {
 100                 margin-top:4%;
 101         }
 102
 103         /* fix the navbar shifting when a modal is open */
 104         /* https://github.com/twbs/bootstrap/issues/14040#issuecomment-159891033 */
 105         body.modal-open{
 106                 width: 100% !important;
 107                 padding-right: 0 !important;
 108 /*              overflow-y: scroll !important; */
 109 /*              position: fixed !important;*/
 110                 overflow: visible;
 111         }
 112
 113         /*
 114          * Side navigation
 115          *
 116          * Scrollspy and affixed enhanced navigation to highlight sections and secondary
 117          * sections of docs content.
 118          */
 119
 120         .affix {
 121                 position: static;
 122                 top: 70px !important;
 123                 /*width: 220px;*/
 124         }
 125
 126         .affix-top {
 127                 /*width: 220px;*/
 128         }
 129
 130         .dashboard-sidebar {
 131                 max-height: calc(100% - 70px) !important;
 132                 overflow-y: auto;
 133                 /*width: 220px !important;*/
 134         }
 135
 136         /* By default it's not affixed in mobile views, so undo that */
 137         .dashboard-sidebar.affix {
 138                 position: static;
 139         }
 140
 141         @media (min-width: 768px) {
 142                 .dashboard-sidebar {
 143                         padding-left: 20px;
 144                 }
 145         }
 146
 147         /* First level of nav */
 148         .dashboard-sidenav {
 149                 margin-top: 20px;
 150                 margin-bottom: 20px;
 151         }
 152
 153         /* All levels of nav */
 154         .dashboard-sidebar .nav > li > a {
 155                 display: block;
 156                 padding: 4px 20px;
 157                 font-size: 13px;
 158                 font-weight: 500;
 159                 color: #767676;
 160         }
 161         .dashboard-sidebar .nav > li > a:hover,
 162         .dashboard-sidebar .nav > li > a:focus {
 163                 padding-left: 19px;
 164                 color: #563d7c;
 165                 text-decoration: none;
 166                 background-color: transparent;
 167                 border-left: 1px solid #563d7c;
 168         }
 169         .dashboard-sidebar .nav > .active > a,
 170         .dashboard-sidebar .nav > .active:hover > a,
 171         .dashboard-sidebar .nav > .active:focus > a {
 172                 padding-left: 18px;
 173                 font-weight: bold;
 174                 color: #563d7c;
 175                 background-color: transparent;
 176                 border-left: 2px solid #563d7c;
 177         }
 178
 179         /* Nav: second level (shown on .active) */
 180         .dashboard-sidebar .nav .nav {
 181                 display: none; /* Hide by default, but at >768px, show it */
 182                 padding-bottom: 10px;
 183         }
 184         .dashboard-sidebar .nav .nav > li > a {
 185                 padding-top: 1px;
 186                 padding-bottom: 1px;
 187                 padding-left: 30px;
 188                 font-size: 12px;
 189                 font-weight: normal;
 190         }
 191         .dashboard-sidebar .nav .nav > li > a:hover,
 192         .dashboard-sidebar .nav .nav > li > a:focus {
 193                 padding-left: 29px;
 194         }
 195         .dashboard-sidebar .nav .nav > .active > a,
 196         .dashboard-sidebar .nav .nav > .active:hover > a,
 197         .dashboard-sidebar .nav .nav > .active:focus > a {
 198                 padding-left: 28px;
 199                 font-weight: 500;
 200         }
 201
 202         .dropdown-menu {
 203                 min-width: 200px;
 204         }
 205         .dropdown-menu.columns-2 {
 206                 margin: 0;
 207                 padding: 0;
 208                 width: 400px;
 209         }
 210         .dropdown-menu li a {
 211                 padding: 5px 15px;
 212                 font-weight: 300;
 213         }
 214         .dropdown-menu.multi-column {
 215                 overflow-x: hidden;
 216         }
 217         .multi-column-dropdown {
 218                 list-style: none;
 219                 padding: 0;
 220         }
 221         .multi-column-dropdown li a {
 222                 display: block;
 223                 clear: both;
 224                 line-height: 1.428571429;
 225                 white-space: normal;
 226         }
 227         .multi-column-dropdown li a:hover {
 228                 text-decoration: none;
 229                 color: #f5f5f5;
 230                 background-color: #262626;
 231         }
 232         .scrollable-menu {
 233                 height: auto;
 234                 max-height: 80vh;
 235                 overflow-x: hidden;
 236         }
 237
 238         /* Back to top (hidden on mobile) */
 239         .back-to-top,
 240         .dashboard-theme-toggle {
 241                 display: none;
 242                 padding: 4px 10px;
 243                 margin-top: 10px;
 244                 margin-left: 10px;
 245                 font-size: 12px;
 246                 font-weight: 500;
 247                 color: #999;
 248         }
 249         .back-to-top:hover,
 250         .dashboard-theme-toggle:hover {
 251                 color: #563d7c;
 252                 text-decoration: none;
 253         }
 254         .dashboard-theme-toggle {
 255                 margin-top: 0;
 256         }
 257
 258         @media (min-width: 768px) {
 259                 .back-to-top,
 260                 .dashboard-theme-toggle {
 261                         display: block;
 262                 }
 263
 264                 /* Widen the fixed sidebar */
 265                 .dashboard-sidebar.affix,
 266                 .dashboard-sidebar.affix-top,
 267                 .dashboard-sidebar.affix-bottom {
 268                         width: 200px !important;
 269                 }
 270
 271                 .dashboard-sidebar.affix {
 272                         position: fixed; /* Undo the static from mobile first approach */
 273                         top: 20px;
 274                 }
 275
 276                 .dashboard-sidebar.affix-bottom {
 277                         position: absolute; /* Undo the static from mobile first approach */
 278                 }
 279
 280                 .dashboard-sidebar.affix-bottom .dashboard-sidenav,
 281                 .dashboard-sidebar.affix .dashboard-sidenav {
 282                         margin-top: 0;
 283                         margin-bottom: 0;
 284                 }
 285         }
 286
 287         /* Show and affix the side nav when space allows it */
 288         @media (min-width: 992px) {
 289                 .dashboard-sidebar .nav > .active > ul {
 290                         display: block;
 291                 }
 292
 293                 /* Widen the fixed sidebar */
 294                 .dashboard-sidebar.affix,
 295                 .dashboard-sidebar.affix-top,
 296                 .dashboard-sidebar.affix-bottom {
 297                         width: 200px !important;
 298                 }
 299                 .dashboard-sidebar.affix {
 300                         position: fixed; /* Undo the static from mobile first approach */
 301                         top: 20px;
 302                 }
 303                 .dashboard-sidebar.affix-bottom {
 304                         position: absolute; /* Undo the static from mobile first approach */
 305                 }
 306                 .dashboard-sidebar.affix-bottom .dashboard-sidenav,
 307                 .dashboard-sidebar.affix .dashboard-sidenav {
 308                         margin-top: 0;
 309                         margin-bottom: 0;
 310                 }
 311         }
 312
 313         @media (min-width: 1200px) {
 314                 /* Widen the fixed sidebar again */
 315                 .dashboard-sidebar.affix-bottom,
 316                 .dashboard-sidebar.affix-top,
 317                 .dashboard-sidebar.affix {
 318                         width: 263px;
 319                 }
 320         }
 321         </style>
 322
 323         <!-- you can set your netdata server globally, by ucommenting this -->
 324         <!-- you can also give a different server per chart, with the attribute: data-host="http://netdata.server:19999" -->
 325         <!-- <script> netdataServer = "http://box:19999"; </script> -->
 326
 327         <!-- check which theme to use -->
 328         <script>
 329                 function loadLocalStorage(name) {
 330                         var ret = null;
 331
 332                         try {
 333                                 if(typeof Storage !== "undefined" && typeof localStorage === 'object')
 334                                         ret = localStorage.getItem(name);
 335                         }
 336                         catch(error) {
 337                                 ;
 338                         }
 339
 340                         if(typeof ret === 'undefined' || ret === null)
 341                                 return null;
 342
 343                         return ret;
 344                 }
 345
 346                 function saveLocalStorage(name, value) {
 347                         try {
 348                                 if(typeof Storage !== "undefined" && typeof localStorage === 'object') {
 349                                         localStorage.setItem(name, value.toString());
 350                                         return true;
 351                                 }
 352                         }
 353                         catch(error) {
 354                                 ;
 355                         }
 356
 357                         return false;
 358                 }
 359
 360                 function getTheme(def) {
 361                         var ret = loadLocalStorage('netdataTheme');
 362                         if(typeof ret === 'undefined' || ret === null || ret === 'undefined')
 363                                 return def;
 364                         else
 365                                 return ret;
 366                 }
 367
 368                 var netdataTheme = getTheme('slate');
 369
 370                 function setTheme(theme) {
 371                         if(theme === netdataTheme) return false;
 372
 373                         return saveLocalStorage('netdataTheme', theme);
 374                 }
 375
 376                 var netdataRegistryCallback = function(urls_array) {
 377                         var el = '';
 378                         var a1 = '';
 379                         var found = 0;
 380
 381                         if(urls_array) {
 382                                 function name_comparator_desc(a, b) {
 383                                         if (a.name > b.name) return -1;
 384                                         if (a.name < b.name) return 1;
 385                                         return 0;
 386                                 }
 387
 388                                 var urls = urls_array.sort(name_comparator_desc);
 389                                 var len = urls.length;
 390                                 while(len--) {
 391                                         var u = urls[len];
 392
 393                                         var status = "enabled";
 394                                         found++;
 395
 396                                         if(u.guid === NETDATA.registry.machine_guid)
 397                                                 status = "disabled"
 398
 399                                         el += '<li id="registry_server_' + u.guid + '" class="' + status + '"><a href="' + u.url + '">' + u.name + '</a></li>';
 400                                         a1 += '<li id="registry_action_' + u.guid + '"><a href="#" onclick="deleteRegistryModalHandler(\'' + u.guid + '\',\'' + u.name + '\',\'' + u.url + '\'); return false;"><i class="fa fa-trash-o" aria-hidden="true" style="color: #999;"></i></a></li>';
 401                                 }
 402                         }
 403
 404                         if(!found) {
 405                                 if(urls)
 406                                         el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">your netdata server list is empty...</a></li>';
 407                                 else
 408                                         el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #666;" target="_blank">failed to contact the registry...</a></li>';
 409
 410                                 a1 += '<li><a href="#">&nbsp;</a></li>';
 411
 412                                 el += '<li role="separator" class="divider"></li>' +
 413                                                 '<li><a href="//london.netdata.rocks/default.html">EU - London (DigitalOcean.com)</a></li>' +
 414                                                 '<li><a href="//atlanta.netdata.rocks/default.html">US - Atlanta (CDN77.com)</a></li>' +
 415                                                 '<li><a href="//athens.netdata.rocks/default.html">EU - Athens</a></li>';
 416                                 a1 += '<li role="separator" class="divider"></li>' +
 417                                                 '<li><a href="#">&nbsp;</a></li>' +
 418                                                 '<li><a href="#">&nbsp;</a></li>'+
 419                                                 '<li><a href="#">&nbsp;</a></li>';
 420                         }
 421
 422                         el += '<li role="separator" class="divider"></li>';
 423                         a1 += '<li role="separator" class="divider"></li>';
 424
 425                         el += '<li><a href="https://github.com/firehol/netdata/wiki/mynetdata-menu-item" style="color: #999;" target="_blank">What is this?</a></li>';
 426                         a1 += '<li><a href="#" style="color: #999;" onclick="switchRegistryModalHandler(); return false;"><i class="fa fa-cog" aria-hidden="true" style="color: #999;"></i></a></li>'
 427
 428                         document.getElementById('mynetdata_servers').innerHTML = el;
 429                         document.getElementById('mynetdata_servers2').innerHTML = el;
 430                         document.getElementById('mynetdata_actions1').innerHTML = a1;
 431                 };
 432
 433         </script>
 434
 435         <!-- load the dashboard manager - it will do the rest -->
 436         <script type="text/javascript" src="dashboard.js?v37"></script>
 437 </head>
 438
 439 <body data-spy="scroll" data-target="#sidebar">
 440         <nav class="navbar navbar-default navbar-fixed-top" role="banner">
 441                 <div class="container">
 442                         <nav id="mynetdata_nav" class="collapse navbar-collapse navbar-left hidden-sm hidden-xs" role="navigation" style="padding-right: 20px;">
 443                                 <ul class="nav navbar-nav">
 444                                         <li class="dropdown">
 445                                                 <a href="#" class="dropdown-toggle" data-toggle="dropdown" id="current_view">my-netdata <strong class="caret"></strong></a>
 446                                                 <ul class="dropdown-menu scrollable-menu inpagemenu multi-column columns-2" role="menu">
 447                                                         <div class="row">
 448                                                                 <div class="col-sm-6" style="width: 85%; padding-right: 0;">
 449                                                                         <ul id="mynetdata_servers" class="multi-column-dropdown">
 450                                                                                 <li><a href="#" onclck="return false;" style="color: #999;">loading...</a></li>
 451                                                                         </ul>
 452                                                                 </div>
 453                                                                 <div class="col-sm-3 hidden-xs" style="width: 15%; padding-left: 0;">
 454                                                                         <ul id="mynetdata_actions1" class="multi-column-dropdown">
 455                                                                         <li style="color: #999;">&nbsp;</li>
 456                                                                         </ul>
 457                                                                 </div>
 458                                                         </div>
 459                                                 </ul>
 460                                         </li>
 461                                 </ul>
 462                         </nav>
 463                         <div class="navbar-header">
 464                                 <button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".navbar-collapse">
 465                                         <span class="sr-only">Toggle navigation</span>
 466                                         <span class="icon-bar"></span>
 467                                         <span class="icon-bar"></span>
 468                                         <span class="icon-bar"></span>
 469                                 </button>
 470                                 <a href="/" class="navbar-brand" id="hostname">netdata</a>
 471                         </div>
 472                         <nav class="collapse navbar-collapse navbar-right" role="navigation">
 473                                 <ul class="nav navbar-nav">
 474                                         <li class="hidden-sm"><a href="#" class="btn" data-toggle="modal" data-target="#optionsModal"><i class="fa fa-cog"></i> settings</a></li>
 475                                         <li class="hidden-sm"><a href="https://github.com/firehol/netdata/wiki" class="btn" target="_blank"><i class="fa fa-github"></i> community</a></li>
 476                                         <li class="hidden-sm" id="updateButton"><a href="#" class="btn" data-toggle="modal" data-target="#updateModal"><i class="fa fa-cloud-download"></i> update</a></li>
 477                                         <li class="hidden-sm"><a href="#" class="btn" data-toggle="modal" data-target="#helpModal"><i class="fa fa-question-circle"></i> help</a></li>
 478                                         <li class="dropdown hidden-md hidden-lg hidden-xs">
 479                                                 <a href="#" class="dropdown-toggle" data-toggle="dropdown" id="current_view">Menu <strong class="caret"></strong></a>
 480                                                 <ul class="dropdown-menu scrollable-menu inpagemenu" role="menu">
 481                                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#optionsModal"><i class="fa fa-cog"></i> settings</a></li>
 482                                                         <li><a href="https://github.com/firehol/netdata/wiki" class="btn" target="_blank"><i class="fa fa-github"></i> community</a></li>
 483                                                         <li><a href="#" class="btn" data-toggle="modal" data-target="#helpModal"><i class="fa fa-question-circle"></i> help</a></li>
 484                                                 </ul>
 485                                         </li>
 486                                         <li class="dropdown hidden-sm hidden-md hidden-lg">
 487                                                 <a href="#" class="dropdown-toggle" data-toggle="dropdown" id="current_view">my-netdata <strong class="caret"></strong></a>
 488                                                 <ul id="mynetdata_servers2" class="dropdown-menu scrollable-menu inpagemenu" role="menu">
 489                                                         <li><a href="#" onclck="return false;" style="color: #999;">loading...</a></li>
 490                                                 </ul>
 491                                         </li>
 492                                 </ul>
 493                         </nav>
 494         </nav>
 495                 </div>
 496         </nav>
 497
 498         <div id="masthead" style="display: none;">
 499                 <div class="container">
 500                         <div class="row">
 501                                 <div class="col-md-7">
 502                                         <h1>Netdata
 503                                                 <p class="lead">Real-time performance monitoring, in the greatest possible detail</p>
 504                                         </h1>
 505                                 </div>
 506                                 <div class="col-md-5">
 507                                         <div class="well well-lg">
 508                                                 <div class="row">
 509                                                 <div class="col-md-6">
 510                                                         <b>Drag</b> charts to pan.
 511                                                         <b>Shift + wheel</b> on them, to zoom in and out.
 512                                                         <b>Double-click</b> on them, to reset.
 513                                                         <b>Hover</b> on them too!
 514                                                         </div>
 515                                                 <div class="col-md-6">
 516                                                         <div data-netdata="system.intr" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-dygraph-type="line" data-dygraph-strokewidth="3" data-dygraph-smooth="true" data-dygraph-highlightcirclesize="6" data-after="-90" data-height="60px" data-colors="#C66"></div>
 517                                                         </div>
 518                                                 </div>
 519                                         </div>
 520                                 </div>
 521                         </div>
 522                 </div>
 523         </div>
 524
 525         <div class="container">
 526                 <div class="row">
 527                         <div class="col-md-10" role="main">
 528                                 <div id="charts_div"></div>
 529                         </div>
 530                         <div class="col-md-2" role="complementary">
 531                                 <nav class="dashboard-sidebar hidden-print hidden-xs hidden-sm" id="sidebar" role="menu"></nav>
 532                         </div>
 533                 </div>
 534         </div>
 535
 536         <div id="footer" class="container" style="display: none;">
 537                 <div class="row">
 538                         <div class="col-md-10" role="main">
 539                                 <div class="p">
 540                                         <big><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></big><br/>
 541                                         <i class="fa fa-copyright"></i> Copyright 2016, Costa Tsaousis.<br/>
 542                                         Released under <a href="http://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank">GPL v3 or later</a>.<br/>
 543                                 </div>
 544                                 <div class="p">
 545                                         <small>
 546                                                 <a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a> re-distributes these software tools:
 547
 548                                                 <i class="fa fa-circle"></i> The excellent <a href="http://dygraphs.com/" target="_blank">Dygraphs.com</a> web chart library,
 549                                                 <i class="fa fa-copyright"></i> Copyright 2009, Dan Vanderkam, <a href="http://dygraphs.com/legal.html" target="_blank">MIT License</a>
 550
 551                                                 <i class="fa fa-circle"></i> <a href="http://omnipotent.net/jquery.sparkline/" target="_blank">jQuery Sparklines</a> web chart library,
 552                                                 <i class="fa fa-copyright"></i> Copyright 2009-2012, Splunk Inc., <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">New BSD License</a>
 553
 554                                                 <i class="fa fa-circle"></i> <a href="http://benpickles.github.io/peity/" target="_blank">Peity</a> web chart library,
 555                                                 <i class="fa fa-copyright"></i> Copyright 2009-2015, Ben Pickles, <a href="https://github.com/benpickles/peity/blob/master/MIT-LICENCE" target="_blank">MIT License</a>
 556
 557                                                 <i class="fa fa-circle"></i> <a href="https://rendro.github.io/easy-pie-chart/" target="_blank">Easy Pie Chart</a> web chart library,
 558                                                 <i class="fa fa-copyright"></i> Copyright 2013, Robert Fleischmann, <a href="https://github.com/rendro/easy-pie-chart/blob/master/LICENSE" target="_blank">MIT License</a>
 559
 560                                                 <i class="fa fa-circle"></i> <a href="http://bernii.github.io/gauge.js/" target="_blank">Gauge.js</a> web chart library,
 561                                                 <i class="fa fa-copyright"></i> Copyright, Bernard Kobos, <a href="http://bernii.github.io/gauge.js/" target="_blank">MIT License</a>
 562
 563                                                 <i class="fa fa-circle"></i> <a href="https://jquery.org/" target="_blank">jQuery</a>,
 564                                                 <i class="fa fa-copyright"></i> Copyright 2015, jQuery Foundation, <a href="https://jquery.org/license/" target="_blank">MIT License</a>
 565
 566                                                 <i class="fa fa-circle"></i> <a href="http://getbootstrap.com/getting-started/" target="_blank">Bootstrap</a>,
 567                                                 <i class="fa fa-copyright"></i> Copyright 2015, Twitter, <a href="http://getbootstrap.com/getting-started/#license-faqs" target="_blank">MIT License</a>
 568
 569                                                 <i class="fa fa-circle"></i> <a href="http://www.bootstraptoggle.com/" target="_blank">Bootstrap Toggle</a>,
 570                                                 <i class="fa fa-copyright"></i> Copyright (c) 2011-2014 Min Hur, The New York Times Company, <a href="https://github.com/minhur/bootstrap-toggle/blob/master/LICENSE" target="_blank">MIT License</a>
 571
 572                                                 <i class="fa fa-circle"></i> <a href="https://jamesflorentino.github.io/nanoScrollerJS/" target="_blank">NanoScroller</a>,
 573                                                 <i class="fa fa-copyright"></i> Copyright 2012, James Florentino, <a href="https://github.com/jamesflorentino/nanoScrollerJS/blob/master/LICENSE" target="_blank">MIT License</a>
 574
 575                                                 <i class="fa fa-circle"></i> <a href="https://github.com/marcj/css-element-queries" target="_blank">CSS Element Queries</a>,
 576                                                 <i class="fa fa-copyright"></i> Copyright Marc J. Schmidt, <a href="https://github.com/marcj/css-element-queries/blob/master/LICENSE" target="_blank">MIT License</a>
 577
 578                                                 <i class="fa fa-circle"></i> <a href="https://fortawesome.github.io/Font-Awesome/" target="_blank">FontAwesome</a>,
 579                                                 <i class="fa fa-copyright"></i> Created by Dave Gandy, Font: <a href="http://scripts.sil.org/OFL" target="_blank">SIL OFL 1.1 License</a>, CSS: <a href="http://opensource.org/licenses/mit-license.html" target="_blank">MIT License</a>
 580
 581                                                 <i class="fa fa-circle"></i> <a href="http://www.iconsdb.com/soylent-red-icons/seo-performance-icon.html" target="_blank">IconsDB.com Icons</a>, Icons provided as CC0 1.0 Universal (CC0 1.0) Public Domain Dedication.
 582
 583                                                 <i class="fa fa-circle"></i> <a href="http://morrisjs.github.io/morris.js/" target="_blank">morris.js</a>,
 584                                                 <i class="fa fa-copyright"></i> Copyright 2013, Olly Smith, <a href="http://morrisjs.github.io/morris.js/" target="_blank">Simplified BSD License</a>
 585
 586                                                 <i class="fa fa-circle"></i> <a href="http://raphaeljs.com/" target="_blank">Raphaël</a>,
 587                                                 <i class="fa fa-copyright"></i> Copyright 2008, Dmitry Baranovskiy, <a href="http://raphaeljs.com/license.html" target="_blank">MIT License</a>
 588
 589                                                 <i class="fa fa-circle"></i> <a href="http://C3js.org/" target="_blank">C3</a>,
 590                                                 <i class="fa fa-copyright"></i> Copyright 2013, Masayuki Tanaka, <a href="https://github.com/masayuki0812/c3/blob/master/LICENSE" target="_blank">MIT License</a>
 591
 592                                                 <i class="fa fa-circle"></i> <a href="http://D3js.org/" target="_blank">D3</a>,
 593                                                 <i class="fa fa-copyright"></i> Copyright 2015, Mike Bostock, <a href="http://opensource.org/licenses/BSD-3-Clause" target="_blank">BSD License</a>
 594
 595                                         </small>
 596                                 </div>
 597                         </div>
 598                 </div>
 599         </div>
 600
 601         <div class="modal fade" id="welcomeModal" tabindex="-1" role="dialog" aria-labelledby="welcomeModalLabel">
 602                 <div class="modal-dialog modal-lg" role="document">
 603                         <div class="modal-content">
 604                                 <div class="modal-header">
 605                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 606                                         <h4 class="modal-title" id="welcomeModalLabel">Welcome!</h4>
 607                                 </div>
 608                                 <div class="modal-body">
 609                                                 <div class="p">
 610                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> is the fastest way to visualize metrics. It is a resource efficient, highly optimized system for collecting and visualizing any type of real-time time series data, from CPU usage, disk activity, SQL queries, API calls, web site visitors, etc.
 611                                                 </div>
 612                                                 <div class="p">
 613                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> tries to visualize the truth of <b>now</b>, in its <b>greatest detail</b>, so that you can get insights of what is happening now and what just happened, on your systems and applications.
 614                                                 </div>
 615                                                 <div class="p">
 616                                                 To make a chart in <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b>, you just need a <b>number</b>. Just a number you can read somehow. <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> will turn this number to a real time, interactive, web chart. For collecting these numbers, it supports <a href="https://github.com/firehol/netdata/wiki/External-Plugins" target="_blank">external plugins</a>, even <a href="https://github.com/firehol/netdata/wiki/General-Info---charts.d" target="_blank">shell</a> or <a href="https://github.com/firehol/netdata/wiki/General-Info---charts.d" target="_blank">node.js</a> plugins. Any computer program, in any language, that can print a few lines of text on its standard output, can be a netdata data collector.
 617                                                 </div>
 618                                                 <div class="p">
 619                                                 <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> can embed charts everywhere, like this one <div data-netdata="system.cpu" data-dimensions="system" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-show-value-of-system-at="system.cpu.system.modal.1"></div> (my CPU system usage which is <span id="system.cpu.system.modal.1" style="display: inline-block; width: 40px; text-align: right;"></span>%),
 620                                                 or this one <div data-netdata="ipv4.tcppackets" data-dimensions="received" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-show-value-of-received-at="ipv4.tcppackets.received.modal.1"></div> (my IPv4 received TCP packets, which are <span id="ipv4.tcppackets.received.modal.1" style="display: inline-block; width: 60px; text-align: right;"></span>/second).
 621                                                 </div>
 622                                                 <div class="p">
 623                                                 You can have <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> charts on your site too. Just give it a <code>div</code> and a real time chart, zoomable and draggable will appear (try it even on these tiny ones - <b>drag</b> them to pan horizontally, <b>shift + drag</b> to zoom in, on <b>chrome shift + mouse wheel</b> to zoom in/out, <b>double click</b> on them to reset them - don't be afraid of <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata</a></b> performance - <a href="https://github.com/firehol/netdata/wiki/Performance" target="_blank">a raspberry pi 2 can sustain 300 charts updates per second</a>!).
 624                                                 </div>
 625                                                 <div class="p">
 626                                                 For more information please refer to the <b><a href="https://github.com/firehol/netdata/wiki" target="_blank">netdata wiki</a></b>.
 627                                                 </div>
 628                                 </div>
 629                                 <div class="modal-footer">
 630                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 631                                 </div>
 632                         </div>
 633                 </div>
 634         </div>
 635
 636         <div class="modal fade" id="helpModal" tabindex="-1" role="dialog" aria-labelledby="helpModalLabel">
 637                 <div class="modal-dialog modal-lg" role="document">
 638                         <div class="modal-content">
 639                                 <div class="modal-header">
 640                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 641                                         <h4 class="modal-title" id="helpModalLabel">Dashboard Help</h4>
 642                                 </div>
 643                                 <div class="modal-body">
 644
 645                                         <h4>Dygraphs (line, area and stacked area charts)</h4>
 646
 647                                         <!-- Nav tabs -->
 648                                         <ul class="nav nav-tabs" role="tablist">
 649                                                 <li role="presentation" class="active"><a href="#help_mouse" aria-controls="help_mouse" role="tab" data-toggle="tab">Mouse Interface</a></li>
 650                                                 <li role="presentation"><a href="#help_touch" aria-controls="help_touch" role="tab" data-toggle="tab">Touch Interface</a></li>
 651                                         </ul>
 652
 653                                         <!-- Tab panes -->
 654                                         <div class="tab-content">
 655                                                 <div role="tabpanel" class="tab-pane active" id="help_mouse">
 656                                                         <div class="p">
 657                                                                 <h4>Mouse Over / Hover</h4>
 658                                                                 Mouse over on a chart to show, at its legend, the values for the timestamp under the mouse (the chart will also highlight the point at the chart).
 659                                                                 <br/>
 660                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 661                                                         </div>
 662                                                         <hr/>
 663                                                         <div class="p">
 664                                                                 <h4>Drag Chart Contents</h4>
 665                                                                 Drag the contents of a chart to pan it horizontally.
 666                                                                 <br/>
 667                                                                 All the charts will follow soon after you let the chart alone (this little delay is by design: it speeds up your browser and lets you focus on what you are exploring).
 668                                                                 <br/>
 669                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double click</b> a panned chart.
 670                                                         </div>
 671                                                         <hr/>
 672                                                         <div class="p">
 673                                                                 <h4>Double Click</h4>
 674                                                                 Double Click a chart to reset all the charts to their default auto-refreshing state.
 675                                                         </div>
 676                                                         <hr/>
 677                                                         <div class="p">
 678                                                                 <h4>SHIFT + Drag</h4>
 679                                                                 While pressing the shift key, click on the contents of a chart and move the mouse to select an area, to zoom in. The other charts will follow too. Zooming is performed in two phases:
 680                                                                 <ul>
 681                                                                         <li>The already loaded chart contents are zoomed (low resolution)</li>
 682                                                                         <li>New data are transferred from the netdata server, to refresh the chart with possibly more detail.</li>
 683                                                                 </ul>
 684                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 685                                                         </div>
 686                                                         <hr/>
 687                                                         <div class="p">
 688                                                                 <h4>SHIFT + Mouse Wheel <small>(does not work on firefox and IE/Edge)</small></h4>
 689                                                                 While pressing the shift key and the mouse pointer is over the contents of a chart, scroll the mouse wheel to zoom in or out. This kind of zooming is aligned to center below the mouse pointer. The other charts will follow too.
 690                                                                 <br/>
 691                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 692                                                         </div>
 693                                                         <hr/>
 694                                                         <div class="p">
 695                                                                 <h4>Legend Operations</h4>
 696                                                                 Click on the label or value of a dimension, will select / un-select this dimension.
 697                                                                 <br/>
 698                                                                 You can press any of the SHIFT or CONTROL keys and then click on legend labels or values, to select / un-select multiple dimensions.
 699                                                         </div>
 700                                                 </div>
 701                                                 <div role="tabpanel" class="tab-pane" id="help_touch">
 702                                                         <div class="p">
 703                                                                 <h4>Single Tap</h4>
 704                                                                 Single Tap on the contents of a chart to show, at its legend, the values for the timestamp tapped (the chart will also highlight the point at the chart).
 705                                                                 <br/>
 706                                                                 All the other visible charts will also show and highlight their values for the same timestamp.
 707                                                         </div>
 708                                                         <hr/>
 709                                                         <div class="p">
 710                                                                 <h4>Drag Chart Contents</h4>
 711                                                                 Touch and Drag the contents of a chart to pan it horizontally.
 712                                                                 <br/>
 713                                                                 All the charts will follow soon after you let the chart alone (this little delay is by design: it speeds up your browser and lets you focus on what you are exploring).
 714                                                                 <br/>
 715                                                                 Once a chart is panned, auto refreshing stops for all charts. To enable it again, <b>double tap</b> a panned chart.
 716                                                         </div>
 717                                                         <hr/>
 718                                                         <div class="p">
 719                                                                 <h4>Double Tap</h4>
 720                                                                 Double tap a chart to reset all the charts to their default auto-refreshing state.
 721                                                         </div>
 722                                                         <hr/>
 723                                                         <div class="p">
 724                                                                 <h4>Zoom <small>(does not work on firefox and IE/Edge)</small></h4>
 725                                                                 With two fingers, zoom in or out.
 726                                                                 <br/>
 727                                                                 Once a chart is zoomed, auto refreshing stops for all charts. To enable it again, <b>double click</b> a zoomed chart.
 728                                                         </div>
 729                                                         <hr/>
 730                                                         <div class="p">
 731                                                                 <h4>Legend Operations</h4>
 732                                                                 Tap on the label or value of a dimension, will select / un-select this dimension.
 733                                                         </div>
 734                                                 </div>
 735                                         </div>
 736                                 </div>
 737                                 <div class="modal-footer">
 738                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 739                                 </div>
 740                         </div>
 741                 </div>
 742         </div>
 743
 744         <div class="modal fade" id="optionsModal" tabindex="-1" role="dialog" aria-labelledby="optionsModalLabel">
 745                 <div class="modal-dialog modal-lg" role="document">
 746                         <div class="modal-content">
 747                                 <div class="modal-header">
 748                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 749                                         <h4 class="modal-title" id="optionsModalLabel">netdata dashboard options</h4>
 750                                 </div>
 751                                 <div class="modal-body">
 752                                         <center>
 753                                                 <small style="color: #BBBBBB;">These are browser settings. Each viewer has its own. They do not affect the operation of your netdata server.
 754                                                 <br/>
 755                                                 Settings take effect immediately and are saved permanently to browser local storage (except the refresh on focus / always option).
 756                                                 <br/>
 757                                                 To reset all options (including charts sizes) to their defaults, click <a href="#" onclick="resetDashboardOptions(); return false;">here</a>.</small>
 758                                         </center>
 759                                         <div style="padding: 10px;"></div>
 760
 761                                         <!-- Nav tabs -->
 762                                         <ul class="nav nav-tabs" role="tablist">
 763                                                 <li role="presentation" class="active"><a href="#settings_performance" aria-controls="settings_performance" role="tab" data-toggle="tab">Performance</a></li>
 764                                                 <li role="presentation"><a href="#settings_sync" aria-controls="settings_sync" role="tab" data-toggle="tab">Synchronization</a></li>
 765                                                 <li role="presentation"><a href="#settings_visual" aria-controls="settings_visual" role="tab" data-toggle="tab">Visual</a></li>
 766                                         </ul>
 767
 768                                         <!-- Tab panes -->
 769                                         <div class="tab-content">
 770                                                 <div role="tabpanel" class="tab-pane active" id="settings_performance">
 771                                                         <form id="optionsForm1" method="get" class="form-horizontal">
 772                                                                 <div class="form-group">
 773                                                                         <table>
 774                                                                         <tr class="option-row">
 775                                                                                 <td class="option-control"><input id="stop_updates_when_focus_is_lost" type="checkbox" checked data-toggle="toggle" data-offstyle="danger" data-onstyle="success" data-on="On Focus" data-off="Always" data-width="110px"></td>
 776                                                                                 <td class="option-info"><strong>When to refresh the charts?</strong><br/>
 777                                                                                         <small>When set to <b>On Focus</b>, the charts will stop being updated if the page / tab does not have the focus of the user. When set to <b>Always</b>, the charts will always be refreshed. Set it to <b>On Focus</b> it to lower the CPU requirements of the browser (and extend the battery of laptops and tablets) when this page does not have your focus. Set to <b>Always</b> to work on another window (i.e. change the settings of something) and have the charts auto-refresh in this window.</small>
 778                                                                                 </td>
 779                                                                                 </tr>
 780                                                                         <tr class="option-row">
 781                                                                                 <td class="option-control">
 782                                                                                 <input id="eliminate_zero_dimensions" type="checkbox" checked data-toggle="toggle" data-on="Non Zero" data-off="All" data-width="110px">
 783                                                                                 </td>
 784                                                                                 <td class="option-info"><strong>Which dimensions to show?</strong><br/>
 785                                                                                         <small>When set to <b>Non Zero</b>, dimensions that have all their values (within the current view) set to zero will not be transferred from the netdata server (except if all dimensions of the chart are zero, in which case this setting does nothing - all dimensions are transferred and shown). When set to <b>All</b>, all dimensions will always be shown. Set it to <b>Non Zero</b> to lower the data transferred between netdata and your browser, lower the CPU requirements of your browser (fewer lines to draw) and increase the focus on the legends (fewer entries at the legends).</small>
 786                                                                                 </td>
 787                                                                                 </tr>
 788                                                                         <tr class="option-row">
 789                                                                                 <td class="option-control"><input id="destroy_on_hide" type="checkbox" data-toggle="toggle" data-on="Destroy" data-off="Hide" data-width="110px"></td>
 790                                                                                 <td class="option-info"><strong>How to handle hidden charts?</strong><br/>
 791                                                                                         <small>When set to <b>Destroy</b>, charts that are not in the current viewport of the browser (are above, or below the visible area of the page), will be destroyed and re-created if and when they become visible again. When set to <b>Hide</b>, the not-visible charts will be just hidden, to simplify the DOM and speed up your browser. Set it to <b>Destroy</b>, to lower the memory requirements of your browser. Set it to <b>Hide</b> for smoother page scrolling.</small>
 792                                                                                 </td>
 793                                                                                 </tr>
 794                                                                         </table>
 795                                                                 </div>
 796                                                         </form>
 797                                                 </div>
 798                                                 <div role="tabpanel" class="tab-pane" id="settings_sync">
 799                                                         <form id="optionsForm2" method="get" class="form-horizontal">
 800                                                                 <div class="form-group">
 801                                                                         <table>
 802                                                                         <tr class="option-row">
 803                                                                                 <td class="option-control"><input id="parallel_refresher" type="checkbox" checked data-toggle="toggle" data-on="Parallel" data-off="Sequential" data-width="110px"></td>
 804                                                                                 <td class="option-info"><strong>Which chart refresh policy to use?</strong><br/>
 805                                                                                         <small>When set to <b>parallel</b>, visible charts are refreshed in parallel (all queries are sent to netdata server in parallel) and are rendered asynchronously. When set to <b>sequential</b> charts are refreshed one after another. Set it to parallel if your browser can cope with it (most modern browsers do), set it to sequential if you work on an older/slower computer.</small>
 806                                                                                 </td>
 807                                                                                 </tr>
 808                                                                         <tr class="option-row" id="concurrent_refreshes_row">
 809                                                                                 <td class="option-control"></td>
 810                                                                                 <td class="option-info">
 811                                                                                         <table>
 812                                                                                         <tr class="option-row">
 813                                                                                         <td class="option-control">
 814                                                                                         <input id="concurrent_refreshes" type="checkbox" checked data-toggle="toggle" data-on="Resync" data-off="Best Effort" data-width="110px">
 815                                                                                         </td>
 816                                                                                         <td class="option-info">
 817                                                                                         <strong>Shall we re-sync chart refreshes?</strong><br/>
 818                                                                                         <small>When set to <b>Resync</b>, the dashboard will attempt to re-synchronize all the charts so that they are refreshed concurrently. When set to <b>Best Effort</b>, each chart may be refreshed with a little time difference to the others. Normally, the dashboard starts refreshing them in parallel, but depending on the speed of your computer and the network latencies, charts start having a slight time difference. Setting this to <b>Resync</b> will attempt to re-synchronize the charts on every update. Setting it to <b>Best Effort</b> may lower the pressure on your browser and the network.</small>
 819                                                                                         </td>
 820                                                                                         </tr>
 821                                                                                         </table>
 822                                                                                 </td>
 823                                                                                 </tr>
 824                                                                         <tr class="option-row">
 825                                                                                 <td class="option-control"><input id="sync_selection" type="checkbox" checked data-toggle="toggle" data-on="Sync" data-off="Don't Sync" data-onstyle="success" data-offstyle="danger" data-width="110px"></td>
 826                                                                                 <td class="option-info"><strong>Sync hover selection on all charts?</strong><br/>
 827                                                                                         <small>When enabled, a selection on one chart will automatically select the same time on all other visible charts and the legends of all visible charts will be updated to show the selected values. When disabled, only the chart getting the user's attention will be selected. Enable it to get better insights of the data. Disable it if you are on a very slow computer that cannot actually do it.</small>
 828                                                                                 </td>
 829                                                                                 </tr>
 830                                                                         <tr class="option-row">
 831                                                                                 <td class="option-control"><input id="sync_pan_and_zoom" type="checkbox" checked data-toggle="toggle"  data-on="Sync" data-off="Don't Sync" data-onstyle="success" data-offstyle="danger" data-width="110px"></td>
 832                                                                                 <td class="option-info"><strong>Sync pan and zoom on all charts?</strong><br/>
 833                                                                                         <small>When enabled, pan and zoom operations on a chart will be replicated to all charts (even the ones that are not currently visible - of course only when they will become visible). When disabled, pan and zoom operations will not be propagated to other charts.</small>
 834                                                                                 </td>
 835                                                                                 </tr>
 836                                                                         </table>
 837                                                                 </div>
 838                                                         </form>
 839                                                 </div>
 840                                                 <div role="tabpanel" class="tab-pane" id="settings_visual">
 841                                                         <form id="optionsForm3" method="get" class="form-horizontal">
 842                                                                 <div class="form-group">
 843                                                                         <table>
 844                                                                         <tr class="option-row">
 845                                                                                 <td class="option-control"><input id="netdata_theme_control" type="checkbox" checked data-toggle="toggle" data-offstyle="danger" data-onstyle="success" data-on="Dark" data-off="White" data-width="110px"></td>
 846                                                                                 <td class="option-info"><strong>Which theme to use?</strong><br/>
 847                                                                                         <small>Netdata comes with two themes: <b>Dark</b> (the default) and <b>White</b>.
 848                                                                                         <br/>
 849                                                                                         <b>Switching this will reload the dashboard</b>.
 850                                                                                         </small>
 851                                                                                 </td>
 852                                                                                 </tr>
 853                                                                         <tr class="option-row">
 854                                                                                 <td class="option-control"><input id="show_help" type="checkbox" checked data-toggle="toggle" data-on="Help Me" data-off="No Help" data-width="110px"></td>
 855                                                                                 <td class="option-info"><strong>Do you need help?</strong><br/>
 856                                                                                         <small>Netdata can show some help in some areas to help you use the dashboard. If all these balloons bother you, disable them using this switch.
 857                                                                                         <br/>
 858                                                                                         <b>Switching this will reload the dashboard</b>.
 859                                                                                         </small>
 860                                                                                 </td>
 861                                                                                 </tr>
 862                                                                         <tr class="option-row">
 863                                                                                 <td class="option-control"><input id="pan_and_zoom_data_padding" type="checkbox" checked data-toggle="toggle"  data-on="Pad" data-off="Don't Pad" data-width="110px"></td>
 864                                                                                 <td class="option-info"><strong>Enable data padding when panning and zooming?</strong><br/>
 865                                                                                         <small>When set to <b>Pad</b> the charts will be padded with more data, both before and after the visible area, thus giving the impression the whole database is loaded. This padding will happen only after the first pan or zoom operation on the chart (initially all charts have only the visible data). When set to <b>Don't Pad</b> only the visible data will be transfered from the netdata server, even after the first pan and zoom operation.</small>
 866                                                                                 </td>
 867                                                                                 </tr>
 868                                                                         <tr class="option-row">
 869                                                                                 <td class="option-control"><input id="smooth_plot" type="checkbox" checked data-toggle="toggle"  data-on="Smooth" data-off="Rough" data-width="110px"></td>
 870                                                                                 <td class="option-info"><strong>Enable Bézier lines on charts?</strong><br/>
 871                                                                                         <small>When set to <b>Smooth</b> the charts libraries that support it, will plot smooth curves instead of simple straight lines to connect the points.
 872                                                                                         <br/>
 873                                                                                         Keep in mind <a href="http://dygraphs.com" target="_blank">dygraphs</a>, the main charting library in netdata dashboards, can only smooth line charts. It cannot smooth area or stacked charts. When set to <b>Rough</b>, this setting can lower the CPU resources consumed by your browser.</small>
 874                                                                                 </td>
 875                                                                                 </tr>
 876                                                                         </table>
 877                                                                 </div>
 878                                                         </form>
 879                                                 </div>
 880                                         </div>
 881                                 </div>
 882                                 <div class="modal-footer">
 883                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 884                                 </div>
 885                         </div>
 886                 </div>
 887         </div>
 888
 889
 890         <div class="modal fade" id="updateModal" tabindex="-1" role="dialog" aria-labelledby="updateModalLabel">
 891                 <div class="modal-dialog" role="document">
 892                         <div class="modal-content">
 893                                 <div class="modal-header">
 894                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 895                                         <h4 class="modal-title" id="updateModalLabel">Update Check</h4>
 896                                 </div>
 897                                 <div class="modal-body">
 898                                         Your netdata version: <b><code><span id="netdataVersion">Unknown</span></code></b>
 899                                         <br/>
 900                                         <div style="padding: 10px;"></div>
 901                                         <div id="versionCheckLog">Not checked yet. Please press the Check Now button.</div>
 902                                 </div>
 903                                 <div class="modal-footer">
 904                                         <a href="#" onclick="notifyForUpdate(true);" type="button" class="btn btn-default">Check Now</a>
 905                                         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
 906                                 </div>
 907                         </div>
 908                 </div>
 909         </div>
 910
 911         <div class="modal fade" id="deleteRegistryModal" tabindex="-1" role="dialog" aria-labelledby="deleteRegistryModalLabel">
 912                 <div class="modal-dialog" role="document">
 913                         <div class="modal-content">
 914                                 <div class="modal-header">
 915                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 916                                         <h4 class="modal-title" id="deleteRegistryModalLabel">Delete <span id="deleteRegistryServerName"></span>?</h4>
 917                                 </div>
 918                                 <div class="modal-body">
 919                                         You are about to delete, from your personal list of netdata servers, the following server:
 920                                         <p style="text-align: center; padding-top: 10px; padding-bottom: 10px; line-height: 2;">
 921                                         <b><span id="deleteRegistryServerName2"></span></b>
 922                                         <br/>
 923                                         <b><span id="deleteRegistryServerURL"></span></b>
 924                                         </p>
 925                                         Are you sure you want to do this?
 926                                         <br/>
 927                                         <div style="padding: 10px;"></div>
 928                                         <small>Keep in mind, this server will be added back if and when you visit it again.</small>
 929                                         <br/>
 930                                         <div id="deleteRegistryResponse" style="display: block; width: 100%; text-align: center; padding-top: 20px;"></div>
 931                                 </div>
 932                                 <div class="modal-footer">
 933                                         <button type="button" class="btn btn-success" data-dismiss="modal">keep it</button>
 934                                         <a href="#" onclick="notifyForDeleteRegistry(true); return false;" type="button" class="btn btn-danger">delete it</a>
 935                                 </div>
 936                         </div>
 937                 </div>
 938         </div>
 939
 940         <div class="modal fade" id="switchRegistryModal" tabindex="-1" role="dialog" aria-labelledby="switchRegistryModalLabel">
 941                 <div class="modal-dialog" role="document">
 942                         <div class="modal-content">
 943                                 <div class="modal-header">
 944                                         <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 945                                         <h4 class="modal-title" id="switchRegistryModalLabel">Switch Netdata Registry Identity</h4>
 946                                 </div>
 947                                 <div class="modal-body">
 948                                         You can copy and paste the following ID to all your browsers (e.g. work and home).
 949                                         <br/>
 950                                         All the browsers with the same ID will identify <b>you</b>, so please don't share this with others.
 951                                         <p style="text-align: center; padding-top: 10px; padding-bottom: 10px; line-height: 2;">
 952                                         <form action="#">
 953                                         <input type="text" class="form-control" id="switchRegistryPersonGUID" placeholder="your personal ID" maxlength="36" autocomplete="off" style="text-align: center; font-size: 1.4em;">
 954                                         </form>
 955                                         </p>
 956                                         Either copy this ID and paste it to another browser, or paste here the ID you have taken from another browser.
 957                                         <p style="padding-top: 10px;"><small>
 958                                                 Keep in mind that:
 959                                                 <ul>
 960                                                         <li>when you switch ID, your previous ID will be lost forever - this is irreversible.</li>
 961                                                         <li>both IDs (your old and the new) must list this netdata at their personal lists.</li>
 962                                                         <li>both IDs have to be known by the registry: <b><span id="switchRegistryURL"></span></b>.</li>
 963                                                         <li>to get a new ID, just clear your browser cookies.</li>
 964                                                 </ul>
 965                                         </small></p>
 966                                         <div id="switchRegistryResponse" style="display: block; width: 100%; text-align: center; padding-top: 20px;"></div>
 967                                 </div>
 968                                 <div class="modal-footer">
 969                                         <button type="button" class="btn btn-success" data-dismiss="modal">cancel</button>
 970                                         <a href="#" onclick="notifyForSwitchRegistry(true); return false;" type="button" class="btn btn-danger">impersonate</a>
 971                                 </div>
 972                         </div>
 973                 </div>
 974         </div>
 975
 976 <script>
 977 var this_is_demo = null;
 978 function isdemo() {
 979         if(this_is_demo !== null) return this_is_demo;
 980         this_is_demo = false;
 981
 982         try {
 983                 if(typeof document.location.hostname === 'string') {
 984                         if(document.location.hostname.endsWith('.my-netdata.io') ||
 985                                         document.location.hostname.endsWith('.mynetdata.io') ||
 986                                         document.location.hostname.endsWith('.netdata.rocks') ||
 987                                         document.location.hostname.endsWith('.firehol.org') ||
 988                                         document.location.hostname.endsWith('.netdata.online'))
 989                                         this_is_demo = true;
 990                 }
 991         }
 992         catch(error) {
 993                 ;
 994         }
 995
 996         return this_is_demo;
 997 }
 998
 999 if(isdemo()) {
1000         document.getElementById('masthead').style.display = 'block';
1001 }
1002
1003 function switchRegistryModalHandler() {
1004         document.getElementById('switchRegistryPersonGUID').value = NETDATA.registry.person_guid;
1005         document.getElementById('switchRegistryURL').innerHTML = NETDATA.registry.server;
1006         document.getElementById('switchRegistryResponse').innerHTML = '';
1007         $('#switchRegistryModal').modal('show');
1008 }
1009
1010 function notifyForSwitchRegistry() {
1011         var n = document.getElementById('switchRegistryPersonGUID').value;
1012
1013         if(n !== '' && n.length === 36) {
1014                 NETDATA.registry.switch(n, function(result) {
1015                         if(result !== null) {
1016                                 $('#switchRegistryModal').modal('hide');
1017                                 NETDATA.registry.init();
1018                         }
1019                         else {
1020                                 document.getElementById('switchRegistryResponse').innerHTML = "<b>Sorry! The registry rejected your request.</b>";
1021                         }
1022                 });
1023         }
1024         else
1025                 document.getElementById('switchRegistryResponse').innerHTML = "<b>The ID you have entered is not a GUID.</b>";
1026 }
1027
1028 var deleteRegistryUrl = null;
1029 function deleteRegistryModalHandler(guid, name, url) {
1030         deleteRegistryUrl = url;
1031         document.getElementById('deleteRegistryServerName').innerHTML = name;
1032         document.getElementById('deleteRegistryServerName2').innerHTML = name;
1033         document.getElementById('deleteRegistryServerURL').innerHTML = url;
1034         document.getElementById('deleteRegistryResponse').innerHTML = '';
1035         $('#deleteRegistryModal').modal('show');
1036 }
1037
1038 function notifyForDeleteRegistry() {
1039         if(deleteRegistryUrl) {
1040                 NETDATA.registry.delete(deleteRegistryUrl, function(result) {
1041                         if(result !== null) {
1042                                 deleteRegistryUrl = null;
1043                                 $('#deleteRegistryModal').modal('hide');
1044                                 NETDATA.registry.init();
1045                         }
1046                         else {
1047                                 document.getElementById('deleteRegistryResponse').innerHTML = "<b>Sorry! this command was rejected by the registry server.</b>";
1048                         }
1049                 });
1050         }
1051 }
1052
1053 var options = {
1054         sparklines_registry: {},
1055         submenu_names: {},
1056         data: null,
1057         hostname: 'netdata_server', // will be overwritten by the netdata server
1058         categories: new Array(),
1059         categories_idx: {},
1060         families: new Array(),
1061         families_idx: {},
1062
1063         chartsPerRow: 0,
1064         chartsMinWidth: 1450,
1065         chartsHeight: 180,
1066         sparklinesHeight: 60
1067 };
1068
1069 // generate a sparkline
1070 // used in the documentation
1071 function sparkline(chart, dimension, units) {
1072         var key = chart + '.' + dimension;
1073
1074         if(typeof units === 'undefined')
1075                 units = '';
1076
1077         if(typeof options.sparklines_registry[key] === 'undefined')
1078                 options.sparklines_registry[key] = { count: 1 };
1079         else
1080                 options.sparklines_registry[key].count++;
1081
1082         key = key + '.' + options.sparklines_registry[key].count;
1083
1084         var h = '<div data-netdata="' + chart + '" data-after="-120" data-width="25%" data-height="15px" data-chart-library="dygraph" data-dygraph-theme="sparkline" data-dimensions="' + dimension + '" data-show-value-of-' + dimension + '-at="' + key + '"></div> (<span id="' + key + '" style="display: inline-block; min-width: 50px; text-align: right;">X</span>' + units + ')';
1085
1086         return h;
1087 }
1088
1089 function chartsPerRow(total) {
1090         if(options.chartsPerRow === 0) {
1091                 width = Math.floor(total / options.chartsMinWidth);
1092                 if(width === 0) width = 1;
1093                 return width;
1094         }
1095         else return options.chartsPerRow;
1096 }
1097
1098 function prioritySort(a, b) {
1099         if(a.priority < b.priority) return -1;
1100         if(a.priority > b.priority) return 1;
1101         if(a.name < b.name) return -1;
1102         return 1;
1103 }
1104
1105 function sortObjectByPriority(object) {
1106         var idx = {};
1107         var sorted = new Array();
1108
1109         for(var i in object) {
1110                 if(typeof idx[i] === 'undefined') {
1111                         idx[i] = object[i];
1112                         sorted.push(i);
1113                 }
1114         }
1115
1116         sorted.sort(function(a, b) {
1117                 if(idx[a].priority < idx[b].priority) return -1;
1118                 if(idx[a].priority > idx[b].priority) return 1;
1119                 if(a < b) return -1;
1120                 return 1;
1121         });
1122
1123         return sorted;
1124 }
1125
1126 // ----------------------------------------------------------------------------
1127
1128 function gaugeChart(title, width, dimensions, colors) {
1129         if(typeof colors === 'undefined')
1130                 colors = '';
1131
1132         if(typeof dimensions === 'undefined')
1133                 dimensions = '';
1134
1135         return '<div data-netdata="CHART_UNIQUE_ID"'
1136                                                         + ' data-dimensions="' + dimensions + '"'
1137                                                         + ' data-chart-library="gauge"'
1138                                                         + ' data-gauge-adjust="width"'
1139                                                         + ' data-title="' + title + '"'
1140                                                         + ' data-width="' + width + '"'
1141                                                         + ' data-before="0"'
1142                                                         + ' data-after="-CHART_DURATION"'
1143                                                         + ' data-points="CHART_DURATION"'
1144                                                         + ' data-colors="' + colors + '"'
1145                                                         + ' role="application"></div>';
1146 }
1147
1148 // ----------------------------------------------------------------------------
1149
1150 var menuData = {
1151         'system': {
1152                 title: 'System Overview',
1153                 info: 'Overview of the key system metrics.'
1154         },
1155
1156         'ap': {
1157                 title: 'Access Points',
1158                 info: undefined
1159         },
1160
1161         'tc': {
1162                 title: 'Quality of Service',
1163                 info: 'Netdata collects and visualizes tc class utilization using its <a href="https://github.com/firehol/netdata/blob/master/plugins.d/tc-qos-helper.sh" target="_blank">tc-helper plugin</a>. If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, netdata automatically collects interface and class names. If your QoS configuration includes overheads calculation, the values shown here will include these overheads (the total bandwidth for the same interface as reported in the Network Interfaces section, will be lower than the total bandwidth reported here). Also, data collection may have a slight time difference compared to the interface (QoS data collection is implemented with a BASH script, so a shift in data collection of a few milliseconds should be justified).'
1164         },
1165
1166         'net': {
1167                 title: 'Network Interfaces',
1168                 info: 'Per network interface statistics collected from <code>/proc/net/dev</code>.'
1169         },
1170
1171         'ipv4': {
1172                 title: 'IPv4 Networking',
1173                 info: undefined
1174         },
1175
1176         'ipv6': {
1177                 title: 'IPv6 Networking',
1178                 info: undefined
1179         },
1180
1181         'ipvs': {
1182                 title: 'IP Virtual Server',
1183                 info: undefined
1184         },
1185
1186         'netfilter': {
1187                 title: 'Firewall (netfilter)',
1188                 info: undefined
1189         },
1190
1191         'cpu': {
1192                 title: 'CPUs',
1193                 info: undefined
1194         },
1195
1196         'mem': {
1197                 title: 'Memory',
1198                 info: undefined
1199         },
1200
1201         'disk': {
1202                 title: 'Disks',
1203                 info: 'Charts with performance information for all the system disks. Special care has been given to present disk performance metrics in a way compatible with <code>iostat -x</code>. netdata by default prevents rendering performance charts for individual partitions and unmounted virtual disks. Disabled charts can still be enabled by altering the relative settings in the netdata configuration file.'
1204         },
1205
1206         'sensors': {
1207                 title: 'Sensors',
1208                 info: undefined
1209         },
1210
1211         'nfsd': {
1212                 title: 'File Server (nfsd)',
1213                 info: undefined
1214         },
1215
1216         'apps': {
1217                 title: 'Applications',
1218                 info: 'Per application statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics for applications of interest, defined in <code>/etc/netdata/apps_groups.conf</code> (the default is <a href="https://github.com/firehol/netdata/blob/master/conf.d/apps_groups.conf" target="_blank">here</a>). The plugin internally builds a process tree (much like <code>ps fax</code> does), and groups processes together (evaluating both child and parent processes) so that the result is always a chart with a predefined set of dimensions (of course, only application groups found running are reported).<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning children continuously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited children of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealistic utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
1219                 height: 1.5
1220         },
1221
1222         'users': {
1223                 title: 'Users',
1224                 info: 'Per user statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics per user.<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning children continuously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited children of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealistic utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
1225                 height: 1.5
1226         },
1227
1228         'groups': {
1229                 title: 'User Groups',
1230                 info: 'Per user group statistics are collected using netdata\'s <code>apps.plugin</code>. This plugin walks through the entire <code>/proc</code> filesystem and aggregates statistics per user group.<br/><b>IMPORTANT</b>: The values shown here are not 100% accurate. They only include values for the processes running. If an application is spawning children continuously, which are terminated in just a few milliseconds (like shell scripts do), the values reported will be inaccurate. Linux does report the values for the exited children of a process. However, these values are reported to the parent process <b>only when the child exits</b>. If these values, of the exited child processes, were also aggregated in the charts below, the charts would have been full of spikes, presenting unrealistic utilization for each process group. So, we decided to ignore these values and present only the utilization of <b>the currently running processes</b>.',
1231                 height: 1.5
1232         },
1233
1234         'netdata': {
1235                 title: 'Netdata Monitoring',
1236                 info: undefined
1237         },
1238
1239         'example': {
1240                 title: 'Example Charts',
1241                 info: undefined
1242         },
1243
1244         'cgroup': {
1245                 title: 'Container',
1246                 info: undefined
1247         },
1248
1249         'mysql': {
1250                 title: 'MySQL',
1251                 info: undefined
1252         },
1253
1254         'named': {
1255                 title: 'named',
1256                 info: undefined
1257         },
1258 };
1259
1260 var submenuData = {
1261         'mem.ksm': {
1262                 title: 'Memory Deduper',
1263                 info: 'Kernel Same-page Merging (KSM) performance monitoring, read from several files in <code>/sys/kernel/mm/ksm/</code>. KSM is a memory-saving de-duplication feature in the Linux kernel (since version 2.6.32). The KSM daemon ksmd periodically scans those areas of user memory which have been registered with it, looking for pages of identical content which can be replaced by a single write-protected page (which is automatically copied if a process later wants to update its content). KSM was originally developed for use with KVM (where it was known as Kernel Shared Memory), to fit more virtual machines into physical memory, by sharing the data common between them.  But it can be useful to any application which generates many instances of the same data.'
1264         },
1265
1266         'netfilter.conntrack': {
1267                 title: 'Connection Tracker',
1268                 info: 'Netfilter Connection Tracker performance monitoring, read from <code>/proc/net/stat/nf_conntrack</code>. The connection tracker keeps track of all connections of the machine, inbound and outbound. It works by keeping a database with all open connections, tracking network and address translation and connection expectations.'
1269         },
1270
1271         'netfilter.nfacct': {
1272                 title: 'Bandwidth Accounting',
1273                 info: 'The following information is read using the <code>nfacct.plugin</code>.'
1274         },
1275
1276         'netfilter.synproxy': {
1277                 title: 'DDoS Protection',
1278                 info: 'DDoS Protection performance monitoring read from <code>/proc/net/stat/synproxy</code>. <a href="https://github.com/firehol/firehol/wiki/Working-with-SYNPROXY" target="_blank">SYNPROXY</a> is a TCP SYN packets proxy. It is used to protect any TCP server (like a web server) from SYN floods and similar DDoS attacks. It is a netfilter module, in the Linux kernel (since version 3.12). It is optimized to handle millions of packets per second utilizing all CPUs available without any concurrency locking between the connections. It can be used for any kind of TCP traffic (even encrypted), since it does not interfere with the content itself.'
1279         }
1280 };
1281
1282 var chartData = {
1283         'system.cpu': {
1284                 info: 'Total CPU utilization (all cores). 100% here means there is no CPU idle time at all. You can get per core usage at the <a href="#cpu">CPUs</a> section and per application usage at the <a href="#apps">Applications Monitoring</a> section.<br/>Keep an eye on <b>iowait</b> ' + sparkline('system.cpu', 'iowait', '%') + '. If it is constantly high, your disks are a bottleneck and they slow your system down.<br/>Another important metric worth monitoring, is <b>softirq</b> ' + sparkline('system.cpu', 'softirq', '%') + '. A constantly high percentage of softirq may indicate network drivers issues.'
1285         },
1286
1287         'system.load': {
1288                 info: 'Current system load read from <code>/proc/loadavg</code>.',
1289                 height: 0.7
1290         },
1291
1292         'system.io': {
1293                 info: 'Total Disk I/O, for all disks, read from <code>/proc/vmstat</code>. You can get detailed information about each disk at the <a href="#disk">Disks</a> section and per application Disk usage at the <a href="#apps">Applications Monitoring</a> section.'
1294         },
1295
1296         'system.swapio': {
1297                 info: 'Total Swap I/O, read from <code>/proc/vmstat</code>. (netdata measures both <code>in</code> and <code>out</code>. If either of them is not shown in the chart, it is because it is zero - you can change the page settings to always render all the available dimensions on all charts).'
1298         },
1299
1300         'system.pgfaults': {
1301                 info: 'Total page faults, read from <code>/proc/vmstat</code>. <b>Major page faults</b> indicates that the system is using its swap. You can find which applications use the swap at the <a href="#apps">Applications Monitoring</a> section.'
1302         },
1303
1304         'system.entropy': {
1305                 colors: '#CC22AA',
1306                 info: '<a href="https://en.wikipedia.org/wiki/Entropy_(computing)" target="_blank">Entropy</a>, read from <code>/proc/sys/kernel/random/entropy_avail</code>, is like a pool of random numbers that are mainly used in cryptography. It is advised that the pool remains always <a href="https://blog.cloudflare.com/ensuring-randomness-with-linuxs-random-number-generator/" target="_blank">above 200</a>. If the pool of entropy gets empty, you risk your security to be predictable and you should install a user-space random numbers generating daemon, like <a href="http://www.issihosts.com/haveged/" target="_blank">haveged</a>, to keep the pool in healthy levels.'
1307         },
1308
1309         'system.forks': {
1310                 colors: '#5555DD',
1311                 info: 'The number of new processes created per second, read from <code>/proc/stat</code>.'
1312         },
1313
1314         'system.intr': {
1315                 colors: '#DD5555',
1316                 info: 'Total number of CPU interrupts, read from <code>/proc/stat</code>. Check <code>system.interrupts</code> that gives more detail about each interrupt and also the <a href="#cpu">CPUs</a> section where interrupts are analyzed per CPU core.'
1317         },
1318
1319         'system.interrupts': {
1320                 info: 'CPU interrupts in detail, read from <code>/proc/interrupts</code>. At the <a href="#cpu">CPUs</a> section, interrupts are analyzed per CPU core.'
1321         },
1322
1323         'system.softirqs': {
1324                 info: 'CPU softirqs in detail, read from <code>/proc/softirqs</code>. At the <a href="#cpu">CPUs</a> section, softirqs are analyzed per CPU core.'
1325         },
1326
1327         'system.processes': {
1328                 info: 'System processes, read from <code>/proc/stat</code>. <b>Blocked</b> are processes that are willing to execute but they cannot, e.g. because they wait for disk activity.'
1329         },
1330
1331         'system.active_processes': {
1332                 info: 'All system active processes, read from <code>/proc/loadavg</code>.'
1333         },
1334
1335         'system.ctxt': {
1336                 info: '<a href="https://en.wikipedia.org/wiki/Context_switch" target="_blank">Context Switches</a>, read from <code>/proc/stat</code>, is the switching of the CPU from one process, task or thread to another. If there are many processes or threads willing to execute and very few CPU cores available to handle them, the system is making more context switching to balance the CPU resources among them. The whole process is computationally intensive. The more the context switches, the slower the system gets.'
1337         },
1338
1339         'system.idlejitter': {
1340                 colors: '#5555AA',
1341                 info: 'Idle jitter is calculated by netdata. A thread is spawned that requests to sleep for a few microseconds. When the system wakes it up, it measures how many microseconds have passed. The difference between the requested and the actual duration of the sleep, is the <b>idle jitter</b>. This number is useful in real-time environments, where CPU jitter can affect the quality of the service (like VoIP media gateways).'
1342         },
1343
1344         'system.ipv4': {
1345                 info: 'Total IPv4 Traffic, read from <code>/proc/net/netstat</code>.'
1346         },
1347
1348         'system.ipv6': {
1349                 info: 'Total IPv6 Traffic, read from <code>/proc/net/snmp6</code>.'
1350         },
1351
1352         'system.ram': {
1353                 info: 'System memory, read from <code>/proc/meminfo</code>.'
1354         },
1355
1356         'system.swap': {
1357                 info: 'System swap memory, read from <code>/proc/meminfo</code>.'
1358         },
1359
1360         'mem.ksm_savings': {
1361                 heads: [
1362                         gaugeChart('Saved', '12%', 'savings', '#0099CC')
1363                 ]
1364         },
1365
1366         'mem.ksm_ratios': {
1367                 heads: [
1368                         function(id) {
1369                                 return  '<div data-netdata="' + id + '"'
1370                                         + ' data-gauge-max-value="100"'
1371                                         + ' data-chart-library="gauge"'
1372                                         + ' data-title="Savings"'
1373                                         + ' data-units="percentage %"'
1374                                         + ' data-gauge-adjust="width"'
1375                                         + ' data-width="12%"'
1376                                         + ' data-before="0"'
1377                                         + ' data-after="-CHART_DURATION"'
1378                                         + ' data-points="CHART_DURATION"'
1379                                         + ' role="application"></div>';
1380                         }
1381                 ]
1382         },
1383
1384         'mem.committed': {
1385                 colors: NETDATA.colors[3]
1386         },
1387
1388         'apps.cpu': {
1389                 height: 2.0
1390         },
1391
1392         'apps.preads': {
1393                 height: 2.0
1394         },
1395
1396         'apps.pwrites': {
1397                 height: 2.0
1398         },
1399
1400         'users.cpu': {
1401                 height: 2.0
1402         },
1403
1404         'users.preads': {
1405                 height: 2.0
1406         },
1407
1408         'users.pwrites': {
1409                 height: 2.0
1410         },
1411
1412         'groups.cpu': {
1413                 height: 2.0
1414         },
1415
1416         'groups.preads': {
1417                 height: 2.0
1418         },
1419
1420         'groups.pwrites': {
1421                 height: 2.0
1422         },
1423
1424         'tc.qos': {
1425                 heads: [
1426                         function(id) {
1427                                 if(id.match(/.*-ifb$/))
1428                                         return gaugeChart('Inbound', '12%', '', '#5555AA');
1429                                 else
1430                                         return gaugeChart('Outbound', '12%', '', '#AA9900');
1431                         }
1432                 ]
1433         },
1434
1435         'net.net': {
1436                 heads: [
1437                         gaugeChart('Received', '12%', 'received'),
1438                         gaugeChart('Sent', '12%', 'sent')
1439                 ]
1440         },
1441
1442         'disk.util': {
1443                 colors: '#FF5588',
1444                 heads: [
1445                         gaugeChart('Utilization', '12%', '', '#FF5588')
1446                 ],
1447                 info: 'Disk Utilization measures the amount of time the disk was busy with something. This is not related to its performance. 100% means that the Linux kernel always had an outstanding operation on the disk. Keep in mind that depending on the underlying technology of the disk, 100% here may or may not be an indication of congestion.'
1448         },
1449
1450         'disk.backlog': {
1451                 colors: '#0099CC',
1452                 info: 'Backlog is an indication of the duration of pending disk operations. On every I/O event the Linux kernel is multiplying the time spent doing I/O since the last update of this field with the number of pending operations. While not accurate, this metric can provide an indication of the expected completion time of the operations in progress.'
1453         },
1454
1455         'disk.io': {
1456                 heads: [
1457                         gaugeChart('Read', '12%', 'reads'),
1458                         gaugeChart('Write', '12%', 'writes')
1459                 ],
1460                 info: 'Amount of data transferred to and from disk.'
1461         },
1462
1463         'disk.ops': {
1464                 info: 'Completed disk I/O operations. Keep in mind the number of operations requested might be higher, since the Linux kernel is able to merge adjacent to each other (see merged operations chart).'
1465         },
1466
1467         'disk.qops': {
1468                 info: 'I/O operations currently in progress. This metric is a snapshot - it is not an average over the last interval.'
1469         },
1470
1471         'netfilter.sockets': {
1472                 colors: '#88AA00',
1473                 heads: [
1474                         gaugeChart('Active Connections', '12%', '', '#88AA00')
1475                 ]
1476         },
1477
1478         'netfilter.new': {
1479                 heads: [
1480                         gaugeChart('New Connections', '12%', 'new', '#5555AA')
1481                 ]
1482         },
1483
1484         'disk.iotime': {
1485                 height: 0.5,
1486                 info: 'The sum of the duration of all completed I/O operations. This number can exceed the interval if the disk is able to execute I/O operations in parallel.'
1487         },
1488         'disk.mops': {
1489                 height: 0.5,
1490                 info: 'The number of merged disk operations. The Linux kernel is able to merge adjacent I/O operations, for example two 4KB reads can become one 8KB read before given to disk.'
1491         },
1492         'disk.svctm': {
1493                 height: 0.5,
1494                 info: 'The average service time for completed I/O operations. This metric is calculated using the total busy time of the disk and the number of completed operations. If the disk is able to execute multiple parallel operations the reporting average service time will be misleading.'
1495         },
1496         'disk.avgsz': {
1497                 height: 0.5,
1498                 info: 'The average I/O operation size.'
1499         },
1500         'disk.await': {
1501                 height: 0.5,
1502                 info: 'The average time for I/O requests issued to the device to be served. This includes the time spent by the requests in queue and the time spent servicing them.'
1503         },
1504
1505         'disk.space': {
1506                 info: 'Disk space utilization. reserved for root is automatically reserved by the system to prevent the root user from getting out of space.'
1507         },
1508         'disk.inodes': {
1509                 info: 'inodes (or index nodes) are filesystem objects (e.g. files and directories). On many types of file system implementations, the maximum number of inodes is fixed at filesystem creation, limiting the maximum number of files the filesystem can hold. It is possible for a device to run out of inodes. When this happens, new files cannot be created on the device, even though there may be free space available.'
1510         },
1511         'apache.connections': {
1512                 colors: NETDATA.colors[4],
1513                 mainheads: [
1514                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1515                 ]
1516         },
1517
1518         'apache.requests': {
1519                 colors: NETDATA.colors[0],
1520                 mainheads: [
1521                         gaugeChart('Connections', '12%', '', NETDATA.colors[0])
1522                 ]
1523         },
1524
1525         'apache.net': {
1526                 colors: NETDATA.colors[3],
1527                 mainheads: [
1528                         gaugeChart('Bandwidth', '12%', '', NETDATA.colors[3])
1529                 ]
1530         },
1531
1532         'apache.workers': {
1533                 mainheads: [
1534                         function(id) {
1535                                 return  '<div data-netdata="' + id + '"'
1536                                         + ' data-dimensions="busy"'
1537                                         + ' data-append-options="percentage"'
1538                                         + ' data-gauge-max-value="100"'
1539                                         + ' data-chart-library="gauge"'
1540                                         + ' data-title="Workers Utilization"'
1541                                         + ' data-units="percentage %"'
1542                                         + ' data-gauge-adjust="width"'
1543                                         + ' data-width="12%"'
1544                                         + ' data-before="0"'
1545                                         + ' data-after="-CHART_DURATION"'
1546                                         + ' data-points="CHART_DURATION"'
1547                                         + ' role="application"></div>';
1548                         }
1549                 ]
1550         },
1551
1552         'apache.bytesperreq': {
1553                 colors: NETDATA.colors[3],
1554                 height: 0.5
1555         },
1556
1557         'apache.reqpersec': {
1558                 colors: NETDATA.colors[4],
1559                 height: 0.5
1560         },
1561
1562         'apache.bytespersec': {
1563                 colors: NETDATA.colors[6],
1564                 height: 0.5
1565         },
1566
1567         'nginx.connections': {
1568                 colors: NETDATA.colors[4],
1569                 mainheads: [
1570                         gaugeChart('Connections', '12%', '', NETDATA.colors[4])
1571                 ]
1572         },
1573
1574         'nginx.requests': {
1575                 colors: NETDATA.colors[0],
1576                 mainheads: [
1577                         gaugeChart('Requests', '12%', '', NETDATA.colors[0])
1578                 ]
1579         }
1580 };
1581
1582 function anyAttribute(obj, attr, key, def) {
1583         if(typeof obj[key] !== 'undefined') {
1584                 if(typeof obj[key][attr] !== 'undefined')
1585                         return obj[key][attr];
1586         }
1587         return def;
1588 }
1589
1590 function menuTitle(chart) {
1591         if(typeof chart.menu_pattern !== 'undefined') {
1592                 return anyAttribute(menuData, 'title', chart.menu_pattern, chart.menu_pattern).toString()
1593                                 + ': ' + chart.type.slice(-(chart.type.length - chart.menu_pattern.length - 1)).toString();
1594         }
1595
1596         return anyAttribute(menuData, 'title', chart.menu, chart.menu);
1597 }
1598
1599 function menuInfo(menu) {
1600         return anyAttribute(menuData, 'info', menu, null);
1601 }
1602
1603 function menuHeight(menu, relative) {
1604         return anyAttribute(menuData, 'height', menu, 1.0) * relative;
1605 }
1606
1607 function submenuTitle(menu, submenu) {
1608         var key = menu + '.' + submenu;
1609         return anyAttribute(submenuData, 'title', key, submenu);
1610 }
1611
1612 function submenuInfo(menu, submenu) {
1613         var key = menu + '.' + submenu;
1614         return anyAttribute(submenuData, 'info', key, null);
1615 }
1616
1617 function submenuHeight(menu, submenu, relative) {
1618         var key = menu + '.' + submenu;
1619         return anyAttribute(submenuData, 'height', key, 1.0) * relative;
1620 }
1621
1622
1623 function chartInfo(id) {
1624         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].info !== 'undefined')
1625                 return '<div class="chart-message netdata-chart-alignment" role="document">' + chartData[id].info + '</div>';
1626         else
1627                 return '';
1628 }
1629
1630 function chartHeight(id, def) {
1631         if(typeof chartData[id] !== 'undefined' && typeof chartData[id].height !== 'undefined')
1632                 return def * chartData[id].height;
1633         else
1634                 return def;
1635 }
1636
1637
1638 // ----------------------------------------------------------------------------
1639
1640 // enrich the data structure returned by netdata
1641 // to reflect our menu system and content
1642 function enrichChartData(chart) {
1643         var tmp = chart.type.split('_')[0];
1644
1645         switch(tmp) {
1646                 case 'ap':
1647                 case 'net':
1648                 case 'disk':
1649                         chart.menu = tmp;
1650                         break;
1651
1652                 case 'mysql':
1653                 case 'named':
1654                 case 'cgroup':
1655                         chart.menu = chart.type;
1656                         chart.menu_pattern = tmp;
1657                         break;
1658
1659                 case 'tc':
1660                         chart.menu = tmp;
1661
1662                         // find a name for this device from fireqos info
1663                         // we strip '_(in|out)' or '(in|out)_'
1664                         if(typeof options.submenu_names[chart.family] === 'undefined' || options.submenu_names[chart.family] === chart.family) {
1665                                 var n = chart.name.split('.')[1];
1666                                 if(n.endsWith('_in'))
1667                                         options.submenu_names[chart.family] = n.slice(0, n.lastIndexOf('_in'));
1668                                 else if(n.endsWith('_out'))
1669                                         options.submenu_names[chart.family] = n.slice(0, n.lastIndexOf('_out'));
1670                                 else if(n.startsWith('in_'))
1671                                         options.submenu_names[chart.family] = n.slice(3, n.length);
1672                                 else if(n.startsWith('out_'))
1673                                         options.submenu_names[chart.family] = n.slice(4, n.length);
1674                         }
1675
1676                         // increase the priority of IFB devices
1677                         // to have inbound appear before outbound
1678                         if(chart.id.match(/.*-ifb$/))
1679                                 chart.priority--;
1680
1681                         break;
1682
1683                 default:
1684                         chart.menu = chart.type;
1685                         break;
1686         }
1687
1688         chart.submenu = chart.family;
1689 }
1690
1691 // ----------------------------------------------------------------------------
1692
1693 function name2id(s) {
1694         return s
1695                 .replace(/ /g, '_')
1696                 .replace(/\(/g, '_')
1697                 .replace(/\)/g, '_')
1698                 .replace(/\./g, '_')
1699                 .replace(/\//g, '_');
1700 }
1701
1702 function headMain(charts, duration) {
1703         var head = '';
1704
1705         if(typeof charts['system.swap'] !== 'undefined')
1706                 head += '<div style="margin-right: 10px;" data-netdata="system.swap"'
1707                 + ' data-dimensions="free"'
1708                 + ' data-append-options="percentage"'
1709                 + ' data-chart-library="easypiechart"'
1710                 + ' data-title="Free Swap"'
1711                 + ' data-units="%"'
1712                 + ' data-easypiechart-max-value="100"'
1713                 + ' data-width="8%"'
1714                 + ' data-before="0"'
1715                 + ' data-after="-' + duration.toString() + '"'
1716                 + ' data-points="' + duration.toString() + '"'
1717                 + ' data-colors="#DD4400"'
1718                 + ' role="application"></div>';
1719
1720         if(typeof charts['system.io'] !== 'undefined') {
1721                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1722                 + ' data-dimensions="in"'
1723                 + ' data-chart-library="easypiechart"'
1724                 + ' data-title="Disk Read"'
1725                 + ' data-units="KB / s"'
1726                 + ' data-width="10%"'
1727                 + ' data-before="0"'
1728                 + ' data-after="-' + duration.toString() + '"'
1729                 + ' data-points="' + duration.toString() + '"'
1730                 + ' role="application"></div>';
1731
1732                 head += '<div style="margin-right: 10px;" data-netdata="system.io"'
1733                 + ' data-dimensions="out"'
1734                 + ' data-chart-library="easypiechart"'
1735                 + ' data-title="Disk Write"'
1736                 + ' data-units="KB / s"'
1737                 + ' data-width="10%"'
1738                 + ' data-before="0"'
1739                 + ' data-after="-' + duration.toString() + '"'
1740                 + ' data-points="' + duration.toString() + '"'
1741                 + ' role="application"></div>';
1742         }
1743
1744         if(typeof charts['system.cpu'] !== 'undefined')
1745                 head += '<div data-netdata="system.cpu"'
1746                 + ' data-chart-library="gauge"'
1747                 + ' data-title="CPU"'
1748                 + ' data-units="%"'
1749                 + ' data-gauge-max-value="100"'
1750                 + ' data-width="18%"'
1751                 + ' data-after="-' + duration.toString() + '"'
1752                 + ' data-points="' + duration.toString() + '"'
1753                 + ' data-colors="' + NETDATA.colors[12] + '"'
1754                 + ' role="application"></div>';
1755
1756         if(typeof charts['system.ipv4'] !== 'undefined') {
1757                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1758                 + ' data-dimensions="received"'
1759                 + ' data-chart-library="easypiechart"'
1760                 + ' data-title="IPv4 Inbound"'
1761                 + ' data-units="kbps"'
1762                 + ' data-width="10%"'
1763                 + ' data-before="0"'
1764                 + ' data-after="-' + duration.toString() + '"'
1765                 + ' data-points="' + duration.toString() + '"'
1766                 + ' role="application"></div>';
1767
1768                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv4"'
1769                 + ' data-dimensions="sent"'
1770                 + ' data-chart-library="easypiechart"'
1771                 + ' data-title="IPv4 Outbound"'
1772                 + ' data-units="kbps"'
1773                 + ' data-width="10%"'
1774                 + ' data-before="0"'
1775                 + ' data-after="-' + duration.toString() + '"'
1776                 + ' data-points="' + duration.toString() + '"'
1777                 + ' role="application"></div>';
1778         }
1779         else if(typeof charts['system.ipv6'] !== 'undefined') {
1780                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1781                 + ' data-dimensions="received"'
1782                 + ' data-chart-library="easypiechart"'
1783                 + ' data-title="IPv6 Inbound"'
1784                 + ' data-units="kbps"'
1785                 + ' data-width="10%"'
1786                 + ' data-before="0"'
1787                 + ' data-after="-' + duration.toString() + '"'
1788                 + ' data-points="' + duration.toString() + '"'
1789                 + ' role="application"></div>';
1790
1791                 head += '<div style="margin-right: 10px;" data-netdata="system.ipv6"'
1792                 + ' data-dimensions="sent"'
1793                 + ' data-chart-library="easypiechart"'
1794                 + ' data-title="IPv6 Outbound"'
1795                 + ' data-units="kbps"'
1796                 + ' data-width="10%"'
1797                 + ' data-before="0"'
1798                 + ' data-after="-' + duration.toString() + '"'
1799                 + ' data-points="' + duration.toString() + '"'
1800                 + ' role="application"></div>';
1801         }
1802
1803         if(typeof charts['system.ram'] !== 'undefined')
1804                 head += '<div style="margin-right: 10px;" data-netdata="system.ram"'
1805                 + ' data-dimensions="cached|free"'
1806                 + ' data-append-options="percentage"'
1807                 + ' data-chart-library="easypiechart"'
1808                 + ' data-title="Available RAM"'
1809                 + ' data-units="%"'
1810                 + ' data-easypiechart-max-value="100"'
1811                 + ' data-width="8%"'
1812                 + ' data-after="-' + duration.toString() + '"'
1813                 + ' data-points="' + duration.toString() + '"'
1814                 + ' data-colors="' + NETDATA.colors[7] + '"'
1815                 + ' role="application"></div>';
1816
1817         return head;
1818 }
1819
1820 function generateHeadCharts(type, chart, duration) {
1821         var head = '';
1822         var hcharts = anyAttribute(chartData, type, chart.context, []);
1823         if(hcharts.length > 0) {
1824                 var hi = 0, hlen = hcharts.length;
1825                 while(hi < hlen) {
1826                         if(typeof hcharts[hi] === 'function')
1827                                 head += hcharts[hi](chart.id).replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1828                         else
1829                                 head += hcharts[hi].replace('CHART_DURATION', duration.toString()).replace('CHART_UNIQUE_ID', chart.id);
1830                         hi++;
1831                 }
1832         }
1833         return head;
1834 }
1835
1836 function renderPage(menus, data) {
1837         var div = document.getElementById('charts_div');
1838         var pcent_width = Math.floor(100 / chartsPerRow($(div).width()));
1839
1840         // find the proper duration for per-second updates
1841         var duration = Math.round(($(div).width() * pcent_width / 100 * data.update_every / 3) / 60) * 60;
1842         var html = '';
1843         var sidebar = '<ul class="nav dashboard-sidenav" data-spy="affix" id="sidebar_ul">';
1844         var mainhead = headMain(data.charts, duration);
1845
1846         // sort the menus
1847         var main = sortObjectByPriority(menus);
1848         var i = 0, len = main.length;
1849         while(i < len) {
1850                 var menu = main[i++];
1851
1852                 // generate an entry at the main menu
1853
1854                 var menuid = name2id(menu);
1855                 sidebar += '<li class=""><a href="#' + menuid + '">' + menus[menu].title + '</a><ul class="nav">';
1856                 html += '<div role="section"><div role="sectionhead"><h1 id="' + menuid + '" role="heading">' + menus[menu].title + '</h1></div><div id="menu_' + menuid + '" role="document">';
1857
1858                 if(menus[menu].info !== null)
1859                         html += menus[menu].info;
1860
1861                 // console.log(' >> ' + menu + ' (' + menus[menu].priority + '): ' + menus[menu].title);
1862
1863                 var shtml = '';
1864                 var mhead = '<div class="netdata-chart-row">' + mainhead;
1865                 mainhead = '';
1866
1867                 // sort the submenus of this menu
1868                 var sub = sortObjectByPriority(menus[menu].submenus);
1869                 var si = 0, slen = sub.length;
1870                 while(si < slen) {
1871                         var submenu = sub[si++];
1872
1873                         // generate an entry at the submenu
1874                         var submenuid = name2id(menu + '_' + submenu);
1875                         sidebar += '<li class><a href="#' + submenuid + '">' + menus[menu].submenus[submenu].title + '</a></li>';
1876                         shtml += '<div class="netdata-group-container" id="submenu_' + submenuid + '" style="display: inline-block; width: ' + pcent_width.toString() + '%"><h2 id="' + submenuid + '" class="netdata-chart-alignment" role="heading">' + menus[menu].submenus[submenu].title + '</h2>';
1877
1878                         if(menus[menu].submenus[submenu].info !== null)
1879                                 shtml += '<div class="chart-message netdata-chart-alignment" role="document">' + menus[menu].submenus[submenu].info + '</div>';
1880
1881                         var head = '<div class="netdata-chart-row">';
1882                         var chtml = '';
1883
1884                         // console.log('    \------- ' + submenu + ' (' + menus[menu].submenus[submenu].priority + '): ' + menus[menu].submenus[submenu].title);
1885
1886                         // sort the charts in this submenu of this menu
1887                         menus[menu].submenus[submenu].charts.sort(prioritySort);
1888                         var ci = 0, clen = menus[menu].submenus[submenu].charts.length;
1889                         while(ci < clen) {
1890                                 var chart = menus[menu].submenus[submenu].charts[ci++];
1891
1892                                 // generate the submenu heading charts
1893                                 mhead += generateHeadCharts('mainheads', chart, duration);
1894                                 head += generateHeadCharts('heads', chart, duration);
1895
1896                                 // generate the chart
1897                                 chtml += chartInfo(chart.context) + '<div data-netdata="' + chart.id + '"'
1898                                         + ' data-width="' + pcent_width.toString() + '%"'
1899                                         + ' data-height="' + chartHeight(chart.context, options.chartsHeight).toString() + 'px"'
1900                                         + ' data-before="0"'
1901                                         + ' data-after="-' + duration.toString() + '"'
1902                                         + ' data-id="' + name2id(options.hostname + '/' + chart.id) + '"'
1903                                         + ' data-colors="' + anyAttribute(chartData, 'colors', chart.context, '') + '"'
1904                                         + ' role="application"></div>';
1905
1906                                 // console.log('         \------- ' + chart.id + ' (' + chart.priority + '): ' + chart.context  + ' height: ' + menus[menu].submenus[submenu].height);
1907                         }
1908
1909                         head += '</div>';
1910                         shtml += head + chtml + '</div>';
1911                 }
1912
1913                 mhead += '</div>';
1914                 sidebar += '</ul></li>';
1915                 html += mhead + shtml + '</div></div><hr role="separator"/>';
1916         }
1917
1918         sidebar += '</ul>';
1919         div.innerHTML = html;
1920         document.getElementById('sidebar').innerHTML = sidebar;
1921         finalizePage();
1922 }
1923
1924 function renderChartsAndMenu(data) {
1925         var menus = {};
1926         var charts = data.charts;
1927
1928         for(var c in charts) {
1929                 enrichChartData(charts[c]);
1930
1931                 // create the menu
1932                 if(typeof menus[charts[c].menu] === 'undefined') {
1933                         menus[charts[c].menu] = {
1934                                 priority: charts[c].priority,
1935                                 submenus: {},
1936                                 title: menuTitle(charts[c]),
1937                                 info: menuInfo(charts[c].menu),
1938                                 height: menuHeight(charts[c].menu, options.chartsHeight)
1939                         };
1940                 }
1941
1942                 if(charts[c].priority < menus[charts[c].menu].priority)
1943                         menus[charts[c].menu].priority = charts[c].priority;
1944
1945                 // create the submenu
1946                 if(typeof menus[charts[c].menu].submenus[charts[c].submenu] === 'undefined') {
1947                         menus[charts[c].menu].submenus[charts[c].submenu] = {
1948                                 priority: charts[c].priority,
1949                                 charts: new Array(),
1950                                 title: null,
1951                                 info: submenuInfo(charts[c].menu, charts[c].submenu),
1952                                 height: submenuHeight(charts[c].menu, charts[c].submenu, menus[charts[c].menu].height)
1953                         };
1954                 }
1955
1956                 if(charts[c].priority < menus[charts[c].menu].submenus[charts[c].submenu].priority)
1957                         menus[charts[c].menu].submenus[charts[c].submenu].priority = charts[c].priority;
1958
1959                 // index the chart in the menu/submenu
1960                 menus[charts[c].menu].submenus[charts[c].submenu].charts.push(charts[c]);
1961         }
1962
1963         // propagate the descriptive subname given to QoS
1964         // to all the other submenus with the same name
1965         for(var m in menus) {
1966                 for(var s in menus[m].submenus) {
1967                         // set the family using a name
1968                         if(typeof options.submenu_names[s] !== 'undefined') {
1969                                 menus[m].submenus[s].title = s + ' (' + options.submenu_names[s] + ')';
1970                         }
1971                         else {
1972                                 menus[m].submenus[s].title = submenuTitle(m, s);
1973                         }
1974                 }
1975         }
1976
1977         renderPage(menus, data);
1978 }
1979
1980 function downloadAllCharts(netdata_url) {
1981         if(typeof netdata_url === 'undefined' || netdata_url === null)
1982                 netdata_url = NETDATA.serverDefault;
1983
1984         NETDATA.pause(function() {
1985
1986                 // download all the charts the server knows
1987                 NETDATA.chartRegistry.downloadAll(netdata_url, function(data) {
1988
1989                         options.data = data;
1990                         options.hostname = data.hostname;
1991                         document.getElementById('hostname').innerHTML = options.hostname;
1992                         document.getElementById('hostname').href = NETDATA.serverDefault;
1993                         document.title = options.hostname + ' dashboard';
1994
1995                         renderChartsAndMenu(data);
1996
1997                         // prepare our DOM
1998 //                      prepareScreen(data);
1999
2000                         // due to affix issues, prepareScreen() will unpause
2001                         // netdata as needed
2002                 });
2003         });
2004 }
2005
2006 // ----------------------------------------------------------------------------
2007
2008 function versionLog(msg) {
2009         document.getElementById('versionCheckLog').innerHTML = msg;
2010 }
2011
2012 function getNetdataVersion(callback) {
2013         versionLog('Downloading installed version info from netdata...');
2014
2015         $.ajax({
2016                 url: 'version.txt',
2017                 async: true,
2018                 cache: false
2019         })
2020         .done(function(data) {
2021                 data = data.replace(/(\r\n|\n|\r| |\t)/gm,"");
2022                 if(data.length !== 40) {
2023                         versionLog('Received version string is invalid.');
2024                         callback(null);
2025                 }
2026                 else {
2027                         versionLog('Installed version of netdata is ' + data);
2028                         document.getElementById('netdataVersion').innerHTML = data;
2029                         callback(data);
2030                 }
2031         })
2032         .fail(function() {
2033                 versionLog('Failed to download installed version info from netdata!');
2034                 callback(null);
2035         });
2036 }
2037
2038 function getGithubLatestCommit(callback) {
2039         versionLog('Downloading latest version info from github...');
2040
2041         $.ajax({
2042                 url: 'https://api.github.com/repos/firehol/netdata/commits',
2043                 async: true,
2044                 cache: false
2045         })
2046         .done(function(data) {
2047                 versionLog('Latest version info from github is ' + data[0].sha);
2048                 callback(data[0].sha);
2049         })
2050         .fail(function() {
2051                 versionLog('Failed to download installed version info from github!');
2052                 callback(null);
2053         });
2054 }
2055
2056 function checkForUpdate(callback) {
2057         getNetdataVersion(function(sha1) {
2058                 if(sha1 === null) callback(null, null);
2059
2060                 getGithubLatestCommit(function(sha2) {
2061                         callback(sha1, sha2);
2062                 });
2063         });
2064
2065         return null;
2066 }
2067
2068 var updateBlinkCounter = 0;
2069 function notifyForUpdate(force) {
2070         versionLog('<p>checking for updates...</p>');
2071
2072         var now = new Date().getTime();
2073
2074         if(typeof force === 'undefined' || force !== true) {
2075                 var last = loadLocalStorage('last_update_check');
2076
2077                 if(typeof last === 'string')
2078                         last = parseInt(last);
2079                 else
2080                         last = 0;
2081
2082                 if(now - last < 3600000 * 8) {
2083                         // no need to check it - too soon
2084                         return;
2085                 }
2086         }
2087
2088         checkForUpdate(function(sha1, sha2) {
2089                 var save = false;
2090
2091                 if(sha1 === null) {
2092                         save = false;
2093                         versionLog('<p><big>Failed to get your netdata version!</big></p><p>You can always get the latest version of netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
2094                 }
2095                 else if(sha2 === null) {
2096                         save = false;
2097                         versionLog('<p><big>Failed to get the latest version from github.</big></p><p>You can always get the latest version of netdata from <a href="https://github.com/firehol/netdata" target="_blank">its github page</a>.</p>');
2098                 }
2099                 else if(sha1 === sha2) {
2100                         save = true;
2101                         versionLog('<p><big>You already have the latest version of netdata!</big></p><p>No update yet?<br/>Probably, we need some motivation to keep going on!</p><p>If you haven\'t already, <a href="https://github.com/firehol/netdata" target="_blank">give netdata a <b>Star</b> at its github page</a>.</p>');
2102                 }
2103                 else {
2104                         save = true;
2105                         var compare = 'https://github.com/firehol/netdata/compare/' + sha1.toString() + '...' + sha2.toString();
2106
2107                         versionLog('<p><big><strong>New version of netdata available!</strong></big></p><p>Latest version: ' + sha2.toString() + '</p><p><a href="' + compare + '" target="_blank">Click here for the changes log</a> since your installed version, and<br/><a href="https://github.com/firehol/netdata/wiki/Updating-Netdata" target="_blank">click here for directions on updating</a> your netdata installation.</p><p>We suggest to review the changes log for new features you may be interested, or important bug fixes you may need.<br/>Keeping your netdata updated, is generally a good idea.</p>');
2108
2109                         function updateButtonBlink() {
2110                                 updateBlinkCounter--;
2111                                 if(updateBlinkCounter > 0)
2112                                         $('#updateButton').fadeOut(500).fadeIn(500, updateButtonBlink);
2113                         }
2114
2115                         if(updateBlinkCounter === 0) {
2116                                 updateBlinkCounter = 300;
2117                                 updateButtonBlink();
2118                         }
2119                 }
2120
2121                 if(save)
2122                         saveLocalStorage('last_update_check', now.toString());
2123         });
2124 }
2125
2126 // ----------------------------------------------------------------------------
2127
2128 function getUrlParameter(sParam) {
2129     var sPageURL = decodeURIComponent(window.location.search.substring(1)),
2130         sURLVariables = sPageURL.split('&'),
2131         sParameterName,
2132         i;
2133
2134     for (i = 0; i < sURLVariables.length; i++) {
2135         sParameterName = sURLVariables[i].split('=');
2136
2137         if (sParameterName[0] === sParam) {
2138             return sParameterName[1] === undefined ? true : sParameterName[1];
2139         }
2140     }
2141 }
2142
2143 function finalizePage() {
2144         // resize all charts - without starting the background thread
2145         // this has to be done while NETDATA is paused
2146         // if we ommit this, the affix menu will be wrong, since all
2147         // the Dom elements are initially zero-sized
2148         NETDATA.parseDom();
2149
2150         var before = 0, after = 0, nowelcome = 0;
2151         after = getUrlParameter('force_after_ms');
2152         before = getUrlParameter('force_before_ms');
2153         nowelcome = (getUrlParameter('nowelcome') === true)?true:false;
2154
2155         if(before > 0 && after > 0) {
2156                 nowelcome = true;
2157                 NETDATA.globalPanAndZoom.setMaster(NETDATA.options.targets[0], after, before);
2158         }
2159
2160         // let it run (update the charts)
2161         NETDATA.unpause();
2162
2163         // check if we have to jump to a specific section
2164         var hash = location.hash.replace('#','');
2165         if(hash != '') {
2166                 // Clear the hash in the URL
2167                 // location.hash = '';   // delete front "//" if you want to change the address bar
2168                 var offset = $(location.hash).offset();
2169                 if(typeof offset !== 'undefined')
2170                         $('html, body').animate({ scrollTop: offset.top }, 0);
2171         }
2172
2173         /* activate bootstrap sidebar (affix) */
2174         $('#sidebar').affix({
2175                 offset: {
2176                         top: (isdemo())?150:0,
2177                         bottom: 0
2178                 }
2179         });
2180
2181         /* fix scrolling of very long affix lists
2182            http://stackoverflow.com/questions/21691585/bootstrap-3-1-0-affix-too-long
2183          */
2184         $('#sidebar').on('affixed.bs.affix', function() {
2185                 $(this).removeAttr('style');
2186         });
2187
2188         /* activate bootstrap scrollspy (needed for sidebar) */
2189         $(document.body).scrollspy({
2190                 target: '#sidebar',
2191                 offset: $(window).height() / 3 // controls the diff of the <hX> element to the top, to select it
2192         });
2193
2194         document.getElementById('footer').style.display = 'block';
2195
2196
2197         var update_options_modal = function() {
2198                 // console.log('update_options_modal');
2199
2200                 var sync_option = function(option) {
2201                         var self = $('#' + option);
2202
2203                         if(self.prop('checked') !== NETDATA.getOption(option)) {
2204                                 // console.log('switching ' + option.toString());
2205                                 self.bootstrapToggle(NETDATA.getOption(option)?'on':'off');
2206                         }
2207                 }
2208
2209                 var theme_sync_option = function(option) {
2210                         var self = $('#' + option);
2211
2212                         self.bootstrapToggle(netdataTheme === 'slate'?'on':'off');
2213                 }
2214
2215                 sync_option('eliminate_zero_dimensions');
2216                 sync_option('destroy_on_hide');
2217                 sync_option('parallel_refresher');
2218                 sync_option('concurrent_refreshes');
2219                 sync_option('sync_selection');
2220                 sync_option('sync_pan_and_zoom');
2221                 sync_option('stop_updates_when_focus_is_lost');
2222                 sync_option('smooth_plot');
2223                 sync_option('pan_and_zoom_data_padding');
2224                 sync_option('show_help');
2225                 theme_sync_option('netdata_theme_control');
2226
2227                 if(NETDATA.getOption('parallel_refresher') === false) {
2228                         $('#concurrent_refreshes_row').hide();
2229                 }
2230                 else {
2231                         $('#concurrent_refreshes_row').show();
2232                 }
2233         };
2234         NETDATA.setOption('setOptionCallback', update_options_modal);
2235
2236         // handle options changes
2237         $('#eliminate_zero_dimensions').change(function()       { NETDATA.setOption('eliminate_zero_dimensions', $(this).prop('checked')); });
2238         $('#destroy_on_hide').change(function()                 { NETDATA.setOption('destroy_on_hide', $(this).prop('checked')); });
2239         $('#parallel_refresher').change(function()              { NETDATA.setOption('parallel_refresher', $(this).prop('checked')); });
2240         $('#concurrent_refreshes').change(function()            { NETDATA.setOption('concurrent_refreshes', $(this).prop('checked')); });
2241         $('#sync_selection').change(function()                  { NETDATA.setOption('sync_selection', $(this).prop('checked')); });
2242         $('#sync_pan_and_zoom').change(function()               { NETDATA.setOption('sync_pan_and_zoom', $(this).prop('checked')); });
2243         $('#stop_updates_when_focus_is_lost').change(function() { NETDATA.setOption('stop_updates_when_focus_is_lost', $(this).prop('checked')); });
2244         $('#smooth_plot').change(function()                     { NETDATA.setOption('smooth_plot', $(this).prop('checked')); });
2245         $('#pan_and_zoom_data_padding').change(function()       { NETDATA.setOption('pan_and_zoom_data_padding', $(this).prop('checked')); });
2246         $('#show_help').change(function()                       { NETDATA.setOption('show_help', $(this).prop('checked')); location.reload(); });
2247
2248         // this has to be the last
2249         // it reloads the page
2250         $('#netdata_theme_control').change(function() {
2251                 if(setTheme($(this).prop('checked')?'slate':'white'))
2252                         location.reload();
2253         });
2254
2255         $('#updateModal').on('shown.bs.modal', function() {
2256                 notifyForUpdate(true);
2257         });
2258
2259         $('#deleteRegistryModal').on('hidden.bs.modal', function() {
2260                 deleteRegistryGuid = null;
2261         });
2262
2263         if(isdemo()) {
2264                 if(!nowelcome) {
2265                         setTimeout(function() {
2266                                 $('#welcomeModal').modal();
2267                         }, 1000);
2268                 }
2269
2270                 // google analytics when this is used for the home page of the demo sites
2271                 // this does not run on user's installations
2272                 setTimeout(function() {
2273                         (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
2274                         (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
2275                         m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
2276                         })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
2277
2278                         ga('create', 'UA-64295674-3', 'auto');
2279                         ga('send', 'pageview');
2280                 }, 2000);
2281         }
2282         else notifyForUpdate();
2283 }
2284
2285 function resetDashboardOptions() {
2286         var help = NETDATA.options.current.show_help;
2287
2288         NETDATA.resetOptions();
2289         if(setTheme('slate'))
2290                 location.reload();
2291
2292         if(help !== NETDATA.options.current.show_help)
2293                 location.reload();
2294 }
2295
2296 downloadAllCharts();
2297
2298 </script>
2299
2300 </body>
2301 </html>