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