plugins.d/alarm-notify.sh

   1 #!/usr/bin/env bash
   2
   3 # (C) Costa Tsaousis
   4 # pushover support by Jan Arnold
   5
   6 me="${0}"
   7
   8 if [ $(( ${BASH_VERSINFO[0]} )) -lt 4 ]
   9 then
  10     echo >&2
  11     echo >&2 "$me: ERROR"
  12     echo >&2 "BASH version 4 or later is required."
  13     echo >&2 "You are running version: ${BASH_VERSION}"
  14     echo >&2 "Please upgrade."
  15     echo >&2
  16     exit 1
  17 fi
  18
  19 # -----------------------------------------------------------------------------
  20 # parse command line parameters
  21
  22 recipient="${1}"   # the recepient of the email
  23 host="${2}"        # the host this event refers to
  24 unique_id="${3}"   # the unique id of this event
  25 alarm_id="${4}"    # the unique id of the alarm that generated this event
  26 event_id="${5}"    # the incremental id of the event, for this alarm
  27 when="${6}"        # the timestamp this event occured
  28 name="${7}"        # the name of the alarm, as given in netdata health.d entries
  29 chart="${8}"       # the name of the chart (type.id)
  30 family="${9}"      # the family of the chart
  31 status="${10}"     # the current status : REMOVED, UNITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
  32 old_status="${11}" # the previous status: REMOVED, UNITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
  33 value="${12}"      # the current value
  34 old_value="${13}"  # the previous value
  35 src="${14}"        # the line number and file the alarm has been configured
  36 duration="${15}"   # the duration in seconds the previous state took
  37 non_clear_duration="${16}" # the total duration in seconds this is non-clear
  38 units="${17}"      # the units of the value
  39 info="${18}"       # a short description of the alarm
  40
  41 # -----------------------------------------------------------------------------
  42 # screen statuses we don't need to send a notification
  43
  44 # don't do anything if this is not WARNING, CRITICAL or CLEAR
  45 if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a "${status}" != "CLEAR" ]
  46 then
  47     echo >&2 "${me}: not sending notification for ${status} on '${chart}.${name}'"
  48     exit 1
  49 fi
  50
  51 # don't do anything if this is CLEAR, but it was not WARNING or CRITICAL
  52 if [ "${old_status}" != "WARNING" -a "${old_status}" != "CRITICAL" -a "${status}" = "CLEAR" ]
  53 then
  54     echo >&2 "${me}: not sending notification for ${status} on '${chart}.${name}' (last status was ${old_status})"
  55     exit 1
  56 fi
  57
  58 # -----------------------------------------------------------------------------
  59 # load configuration
  60
  61 # this is defined here so that private registries
  62 # can setup their own
  63 # images_base_url="${NETDATA_REGISTRY_URL}"
  64 images_base_url="https://registry.my-netdata.io"
  65
  66 # needed commands
  67 # if empty they will be searched in the system path
  68 curl=
  69 sendmail=
  70
  71 # enable / disable features
  72 SEND_SLACK="YES"
  73 SEND_PUSHOVER="YES"
  74 SEND_EMAIL="YES"
  75
  76 # slack configs
  77 SLACK_WEBHOOK_URL=
  78 DEFAULT_RECIPIENT_SLACK=
  79 declare -A role_recipients_slack=()
  80
  81 # pushover configs
  82 PUSHOVER_APP_TOKEN=
  83 DEFAULT_RECIPIENT_PUSHOVER=
  84 declare -A role_recipients_pushover=()
  85
  86 # email configs
  87 DEFAULT_RECIPIENT_EMAIL="root"
  88 declare -A role_recipients_email=()
  89
  90 # load the user configuration
  91 # this will overwrite the variables above
  92 if [ -f "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf" ]
  93     then
  94     source "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf"
  95 fi
  96
  97 # -----------------------------------------------------------------------------
  98 # find the recipient's addresses per method
  99
 100 declare -A arr_slack=()
 101 declare -A arr_pushover=()
 102 declare -A arr_email=()
 103
 104 # netdata may call us with multiple recipients
 105 # so, here we find the unique ones
 106 for x in ${recipient//,/ }
 107 do
 108     # email
 109     a="${role_recipients_email[${recipient}]}"
 110     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_EMAIL}"
 111     for r in ${a//,/ }; do arr_email[${r}]="1"; done
 112
 113     # pushover
 114     a="${role_recipients_pushover[${recipient}]}"
 115     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHOVER}"
 116     for r in ${a//,/ }; do arr_pushover[${r}]="1"; done
 117
 118     # slack
 119     a="${role_recipients_slack[${recipient}]}"
 120     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SLACK}"
 121     for r in ${a//,/ }; do arr_slack[${r}]="1"; done
 122 done
 123
 124 # build the list of slack recipients (channels)
 125 to_slack="${!arr_slack[*]}"
 126 [ -z "${to_slack}" ] && SEND_SLACK="NO"
 127
 128 # build the list of pushover recipients (user tokens)
 129 to_pushover="${!arr_pushover[*]}"
 130 [ -z "${to_pushover}" ] && SEND_PUSHOVER="NO"
 131
 132 # build the list of email recipients (email addresses)
 133 to_email=
 134 for x in "${!arr_email[@]}"
 135 do
 136     [ ! -z "${to_email}" ] && to_email="${to_email}, "
 137     to_email="${to_email}${x}"
 138 done
 139 [ -z "${to_email}" ] && to_email="root"
 140
 141
 142 # -----------------------------------------------------------------------------
 143 # verify the delivery methods supported
 144
 145 # check slack
 146 [ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
 147
 148 # check pushover
 149 [ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
 150
 151 if [ \( "${SEND_PUSHOVER}" = "YES" -o "${SEND_SLACK}" = "YES" \) -a -z "${curl}" ]
 152     then
 153     curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
 154     if [ -z "${curl}" ]
 155         then
 156         SEND_PUSHOVER="NO"
 157         SEND_SLACK="NO"
 158     fi
 159 fi
 160
 161 if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
 162     then
 163     sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
 164     [ -z "${sendmail}" ] && SEND_EMAIL="NO"
 165 fi
 166
 167 # check that we have at least a method enabled
 168 if [ "${SEND_EMAIL}" != "YES" -a "${SEND_PUSHOVER}" != "YES" -a "${SEND_SLACK}" != "YES" ]
 169     then
 170     echo >&2 "I don't have a means to send a notification. Sorry!"
 171     exit 1
 172 fi
 173
 174 # -----------------------------------------------------------------------------
 175 # get the system hostname
 176
 177 [ -z "${host}" ] && host="${NETDATA_HOSTNAME}"
 178 [ -z "${host}" ] && host="${NETDATA_REGISTRY_HOSTNAME}"
 179 [ -z "${host}" ] && host="$(hostname 2>/dev/null)"
 180
 181 # -----------------------------------------------------------------------------
 182 # get the date the alarm happened
 183
 184 date="$(date --date=@${when} 2>/dev/null)"
 185 [ -z "${date}" ] && date="$(date 2>/dev/null)"
 186
 187 # -----------------------------------------------------------------------------
 188 # URL encode a string
 189
 190 urlencode() {
 191     local string="${1}" strlen encoded pos c o
 192
 193     strlen=${#string}
 194     for (( pos=0 ; pos<strlen ; pos++ ))
 195     do
 196         c=${string:$pos:1}
 197         case "$c" in
 198             [-_.~a-zA-Z0-9])
 199                 o="${c}"
 200                 ;;
 201
 202             *)
 203                 printf -v o '%%%02x' "'$c"
 204                 ;;
 205         esac
 206         encoded+="${o}"
 207     done
 208
 209     REPLY="${encoded}"
 210     echo "${REPLY}"
 211 }
 212
 213 # -----------------------------------------------------------------------------
 214 # convert a duration in seconds, to a human readable duration
 215 # using DAYS, MINUTES, SECONDS
 216
 217 duration4human() {
 218     local s="${1}" d=0 h=0 m=0 ds="day" hs="hour" ms="minute" ss="second" ret
 219     d=$(( s / 86400 ))
 220     s=$(( s - (d * 86400) ))
 221     h=$(( s / 3600 ))
 222     s=$(( s - (h * 3600) ))
 223     m=$(( s / 60 ))
 224     s=$(( s - (m * 60) ))
 225
 226     if [ ${d} -gt 0 ]
 227     then
 228         [ ${m} -ge 30 ] && h=$(( h + 1 ))
 229         [ ${d} -gt 1 ] && ds="days"
 230         [ ${h} -gt 1 ] && hs="hours"
 231         if [ ${h} -gt 0 ]
 232         then
 233             ret="${d} ${ds} and ${h} ${hs}"
 234         else
 235             ret="${d} ${ds}"
 236         fi
 237     elif [ ${h} -gt 0 ]
 238     then
 239         [ ${s} -ge 30 ] && m=$(( m + 1 ))
 240         [ ${h} -gt 1 ] && hs="hours"
 241         [ ${m} -gt 1 ] && ms="minutes"
 242         if [ ${m} -gt 0 ]
 243         then
 244             ret="${h} ${hs} and ${m} ${ms}"
 245         else
 246             ret="${h} ${hs}"
 247         fi
 248     elif [ ${m} -gt 0 ]
 249     then
 250         [ ${m} -gt 1 ] && ms="minutes"
 251         [ ${s} -gt 1 ] && ss="seconds"
 252         if [ ${s} -gt 0 ]
 253         then
 254             ret="${m} ${ms} and ${s} ${ss}"
 255         else
 256             ret="${m} ${ms}"
 257         fi
 258     else
 259         [ ${s} -gt 1 ] && ss="seconds"
 260         ret="${s} ${ss}"
 261     fi
 262
 263     REPLY="${ret}"
 264     echo "${REPLY}"
 265 }
 266
 267 # -----------------------------------------------------------------------------
 268 # email sender
 269
 270 send_email() {
 271     local ret=
 272     if [ "${SEND_EMAIL}" = "YES" ]
 273         then
 274
 275         "${sendmail}" -t
 276         ret=$?
 277
 278         if [ $ret -eq 0 ]
 279         then
 280             echo >&2 "${me}: Sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
 281             return 0
 282         else
 283             echo >&2 "${me}: Failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
 284             return 1
 285         fi
 286     fi
 287
 288     return 1
 289 }
 290
 291 # -----------------------------------------------------------------------------
 292 # pushover sender
 293
 294 send_pushover() {
 295     local apptoken="${1}" usertokens="${2}" when="${3}" url="${4}" status="${5}" title="${6}" message="${7}" httpcode sent=0 user priority
 296
 297     if [ "${SEND_PUSHOVER}" = "YES" -a ! -z "${apptoken}" -a ! -z "${usertokens}" -a ! -z "${title}" -a ! -z "${message}" ]
 298         then
 299
 300         # https://pushover.net/api
 301         priority=-2
 302         case "${status}" in
 303             CLEAR) priority=-1;;   # low priority: no sound or vibration
 304             WARNING) priotity=0;;  # normal priority: respect quiet hours
 305             CRITICAL) priority=1;; # high priority: bypass quiet hours
 306             *) priority=-2;;       # lowest priority: no notification at all
 307         esac
 308
 309         for user in ${usertokens}
 310         do
 311             httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null \
 312                 --form-string "token=${apptoken}" \
 313                 --form-string "user=${user}" \
 314                 --form-string "html=1" \
 315                 --form-string "title=${title}" \
 316                 --form-string "message=${message}" \
 317                 --form-string "timestamp=${when}" \
 318                 --form-string "url=${url}" \
 319                 --form-string "url_title=Open netdata dashboard to view the alarm" \
 320                 --form-string "priority=${priority}" \
 321                 https://api.pushover.net/1/messages.json)
 322
 323             if [ "${httpcode}" == "200" ]
 324             then
 325                 echo >&2 "${me}: Sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
 326                 sent=$((sent + 1))
 327             else
 328                 echo >&2 "${me}: Failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
 329             fi
 330         done
 331
 332         [ ${sent} -gt 0 ] && return 0
 333     fi
 334
 335     return 1
 336 }
 337
 338 # -----------------------------------------------------------------------------
 339 # slack sender
 340
 341 send_slack() {
 342     local webhook="${1}" channels="${2}" when="${3}" username="${4}" image="${5}" author="${6}" httpcode sent=0 channel color
 343
 344     if [ "${SEND_SLACK}" = "YES" -a ! -z "${webhook}" -a ! -z "${channels}" -a ! -z "${username}" -a ! -z "${image}" -a ! -z "${author}" ]
 345         then
 346
 347         case "${status}" in
 348             WARNING) color="warning" ;;
 349             CRITICAL) color="danger" ;;
 350             CLEAR) color="good" ;;
 351             *) color="#777777" ;;
 352         esac
 353
 354         for channel in ${channels}
 355         do
 356             httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null -X POST --data-urlencode \
 357                 "payload={\"channel\": \"#${channel}\", \"username\": \"${username}\", \"text\": \"${host} ${status_message} - ${author} ${raised_for} - click <${goto_url}|here> to view the netdata dashboard.\", \"icon_url\": \"${image}\", \"attachments\": [{\"fallback\": \"${alarm} - ${info}\", \"color\": \"${color}\", \"title\": \"${alarm}\", \"title_link\": \"${goto_url}\", \"text\": \"${info}\", \"footer\": \"netdata\", \"footer_icon\": \"${images_base_url}/images/seo-performance-128.png\", \"ts\": ${when}}]}" \
 358                 "${webhook}")
 359
 360             if [ "${httpcode}" == "200" ]
 361             then
 362                 echo >&2 "${me}: Sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
 363                 sent=$((sent + 1))
 364             else
 365                 echo >&2 "${me}: Failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
 366             fi
 367         done
 368
 369         [ ${sent} -gt 0 ] && return 0
 370     fi
 371
 372     return 1
 373 }
 374
 375
 376 # -----------------------------------------------------------------------------
 377 # prepare the content of the notification
 378
 379 # the url to send the user on click
 380 urlencode "${NETDATA_REGISTRY_HOSTNAME}" >/dev/null; url_host="${REPLY}"
 381 urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
 382 urlencode "${family}" >/dev/null; url_family="${REPLY}"
 383 urlencode "${name}" >/dev/null; url_name="${REPLY}"
 384 goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?host=${url_host}&chart=${url_chart}&family=${url_family}&alarm=${url_name}&alarm_unique_id=${unique_id}&alarm_id=${alarm_id}&alarm_event_id=${event_id}"
 385
 386 # the severity of the alarm
 387 severity="${status}"
 388
 389 # the time the alarm was raised
 390 duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
 391 duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
 392 raised_for="(was ${old_status,,} for ${duration_txt}"
 393
 394 # the key status message
 395 status_message="status unknown"
 396
 397 # the color of the alarm
 398 color="grey"
 399
 400 # the alarm value
 401 alarm="${name//_/ } = ${value} ${units}"
 402
 403 # the image of the alarm
 404 image="${images_base_url}/images/seo-performance-128.png"
 405
 406 # prepare the title based on status
 407 case "${status}" in
 408         CRITICAL)
 409         image="${images_base_url}/images/alert-128-red.png"
 410         status_message="is critical"
 411         color="#ca414b"
 412         ;;
 413
 414     WARNING)
 415         image="${images_base_url}/images/alert-128-orange.png"
 416         status_message="needs attention"
 417         color="#caca4b"
 418                 ;;
 419
 420         CLEAR)
 421         image="${images_base_url}/images/check-mark-2-128-green.png"
 422         status_message="recovered"
 423                 color="#77ca6d"
 424
 425                 # don't show the value when the status is CLEAR
 426                 # for certain alarms, this value might not have any meaning
 427                 alarm="${name//_/ }"
 428                 ;;
 429 esac
 430
 431 if [ "${status}" = "CLEAR" ]
 432 then
 433     severity="Recovered from ${old_status}"
 434     if [ $non_clear_duration -gt $duration ]
 435     then
 436         raised_for="(alarm was raised for ${non_clear_duration_txt})"
 437     fi
 438
 439 elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
 440 then
 441     severity="Escalated to ${status}"
 442     if [ $non_clear_duration -gt $duration ]
 443     then
 444         raised_for="(alarm is raised for ${non_clear_duration_txt})"
 445     fi
 446
 447 elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
 448 then
 449     severity="Demoted to ${status}"
 450     if [ $non_clear_duration -gt $duration ]
 451     then
 452         raised_for="(alarm is raised for ${non_clear_duration_txt})"
 453     fi
 454
 455 else
 456     raised_for=
 457 fi
 458
 459 # prepare HTML versions of elements
 460 info_html=
 461 [ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
 462
 463 raised_for_html=
 464 [ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
 465
 466 # -----------------------------------------------------------------------------
 467 # send the slack notification
 468
 469 # slack aggregates posts from the same username
 470 # so we use "${host} ${status}" as the bot username, to make them diff
 471
 472 send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}" "${when}" "${host} ${status}" "${image}" "${chart} (${family})"
 473 SENT_SLACK=$?
 474
 475 # -----------------------------------------------------------------------------
 476 # send the pushover notification
 477
 478 send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
 479 <font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
 480 <small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
 481 <small><b>${family}</b><br/>Family<br/>&nbsp;</small>
 482 <small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
 483 <small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
 484 <a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
 485 <small><small>The source of this alarm is line ${src}</small></small>
 486 "
 487
 488 SENT_PUSHOVER=$?
 489
 490 # -----------------------------------------------------------------------------
 491 # send the email
 492
 493 send_email <<EOF
 494 To: ${to_email}
 495 Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
 496 Content-Type: text/html
 497
 498 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 499 <html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
 500 <body style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
 501 <table>
 502     <tbody>
 503     <tr>
 504         <td style="vertical-align: top;" valign="top"></td>
 505         <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
 506             <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
 507                 <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
 508                     <tbody>
 509                     <tr>
 510                         <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
 511                             <div style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
 512                         </td>
 513                     </tr>
 514                     <tr>
 515                         <td bgcolor="${color}" style="font-size: 16px; vertical-align: top; font-weight: 400; text-align: center; margin: 0; padding: 10px; color: #ffffff; background: ${color} !important; border: 1px solid ${color}; border-top-color: ${color};" align="center" valign="top">
 516                             <h1 style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
 517                         </td>
 518                     </tr>
 519                     <tr>
 520                         <td style="vertical-align: top;" valign="top">
 521                             <div style="margin: 0; padding: 20px; max-width: 700px;">
 522                                 <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
 523                                     <tbody>
 524                                     <tr>
 525                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
 526                                             <span>${chart}</span>
 527                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
 528                                         </td>
 529                                     </tr>
 530                                     <tr style="margin: 0; padding: 0;">
 531                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
 532                                             <span><b>${alarm}</b>${info_html}</span>
 533                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
 534                                         </td>
 535                                     </tr>
 536                                     <tr>
 537                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
 538                                             <span>${family}</span>
 539                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
 540                                         </td>
 541                                     </tr>
 542                                     <tr style="margin: 0; padding: 0;">
 543                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
 544                                             <span>${severity}</span>
 545                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
 546                                         </td>
 547                                     </tr>
 548                                     <tr style="margin: 0; padding: 0;">
 549                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top"><span>${date}</span>
 550                                             <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
 551                                         </td>
 552                                     </tr>
 553                                     <tr style="margin: 0; padding: 0;">
 554                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
 555                                             <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
 556                                         </td>
 557                                     </tr>
 558                                     <tr style="text-align: center; margin: 0; padding: 0;">
 559                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code>
 560                                         </td>
 561                                     </tr>
 562                                     <tr style="text-align: center; margin: 0; padding: 0;">
 563                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
 564                                             <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance monitoring.
 565                                         </td>
 566                                     </tr>
 567                                     </tbody>
 568                                 </table>
 569                             </div>
 570                         </td>
 571                     </tr>
 572                     </tbody>
 573                 </table>
 574             </div>
 575         </td>
 576     </tr>
 577     </tbody>
 578 </table>
 579 </body>
 580 </html>
 581 EOF
 582
 583 SENT_EMAIL=$?
 584
 585 # -----------------------------------------------------------------------------
 586 # let netdata know
 587
 588 # we did send somehting
 589 [ ${SENT_EMAIL} -eq 0 -o ${SENT_PUSHOVER} -eq 0 -o ${SENT_SLACK} -eq 0 ] && exit 0
 590
 591 # we did not send anything
 592 exit 1