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 # filter recipients based on the criticality of each
  99
 100 filter_recipient_by_criticality() {
 101     local method="${1}" x="${2}" r s
 102     shift
 103
 104     r="${x/|*/}"
 105     s="${x/*|/}"
 106
 107     # no severity filtering for this person
 108     [ "${r}" = "${s}" ] && return 0
 109
 110     # the severity is invalid
 111     s="${s^^}"
 112     [ "${s}" != "CRITICAL" ] && return 0
 113
 114     # the new or the old status matches the severity
 115     if [ "${s}" = "${status}" -o "${s}" = "${old_status}" ]
 116         then
 117         [ ! -d "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}" ] && \
 118             mkdir -p "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}"
 119
 120         # we need to keep track of the notifications we sent
 121         # so that the same user will receive the recovery
 122         # even if old_status does not match the required severity
 123         touch "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
 124         return 0
 125     fi
 126
 127     # it is a cleared alarm we have sent notification for
 128     if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
 129         then
 130         rm "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
 131         return 0
 132     fi
 133
 134     return 1
 135 }
 136
 137 # -----------------------------------------------------------------------------
 138 # find the recipient's addresses per method
 139
 140 declare -A arr_slack=()
 141 declare -A arr_pushover=()
 142 declare -A arr_email=()
 143
 144 # netdata may call us with multiple recipients
 145 # so, here we find the unique ones
 146 for x in ${recipient//,/ }
 147 do
 148     # email
 149     a="${role_recipients_email[${recipient}]}"
 150     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_EMAIL}"
 151     for r in ${a//,/ }
 152     do
 153         filter_recipient_by_criticality email "${r}" && arr_email[${r/|*/}]="1"
 154     done
 155
 156     # pushover
 157     a="${role_recipients_pushover[${recipient}]}"
 158     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHOVER}"
 159     for r in ${a//,/ }
 160     do
 161         filter_recipient_by_criticality pushover "${r}" && arr_pushover[${r/|*/}]="1"
 162     done
 163
 164     # slack
 165     a="${role_recipients_slack[${recipient}]}"
 166     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SLACK}"
 167     for r in ${a//,/ }
 168     do
 169         filter_recipient_by_criticality slack "${r}" && arr_slack[${r/|*/}]="1"
 170     done
 171 done
 172
 173 # build the list of slack recipients (channels)
 174 to_slack="${!arr_slack[*]}"
 175 [ -z "${to_slack}" ] && SEND_SLACK="NO"
 176
 177 # build the list of pushover recipients (user tokens)
 178 to_pushover="${!arr_pushover[*]}"
 179 [ -z "${to_pushover}" ] && SEND_PUSHOVER="NO"
 180
 181 # build the list of email recipients (email addresses)
 182 to_email=
 183 for x in "${!arr_email[@]}"
 184 do
 185     [ ! -z "${to_email}" ] && to_email="${to_email}, "
 186     to_email="${to_email}${x}"
 187 done
 188 [ -z "${to_email}" ] && SEND_EMAIL="NO"
 189
 190
 191 # -----------------------------------------------------------------------------
 192 # verify the delivery methods supported
 193
 194 # check slack
 195 [ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
 196
 197 # check pushover
 198 [ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
 199
 200 if [ \( "${SEND_PUSHOVER}" = "YES" -o "${SEND_SLACK}" = "YES" \) -a -z "${curl}" ]
 201     then
 202     curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
 203     if [ -z "${curl}" ]
 204         then
 205         SEND_PUSHOVER="NO"
 206         SEND_SLACK="NO"
 207     fi
 208 fi
 209
 210 if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
 211     then
 212     sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
 213     [ -z "${sendmail}" ] && SEND_EMAIL="NO"
 214 fi
 215
 216 # check that we have at least a method enabled
 217 if [ "${SEND_EMAIL}" != "YES" -a "${SEND_PUSHOVER}" != "YES" -a "${SEND_SLACK}" != "YES" ]
 218     then
 219     echo >&2 "I don't have a means to send a notification. Sorry!"
 220     exit 1
 221 fi
 222
 223 # -----------------------------------------------------------------------------
 224 # get the system hostname
 225
 226 [ -z "${host}" ] && host="${NETDATA_HOSTNAME}"
 227 [ -z "${host}" ] && host="${NETDATA_REGISTRY_HOSTNAME}"
 228 [ -z "${host}" ] && host="$(hostname 2>/dev/null)"
 229
 230 # -----------------------------------------------------------------------------
 231 # get the date the alarm happened
 232
 233 date="$(date --date=@${when} 2>/dev/null)"
 234 [ -z "${date}" ] && date="$(date 2>/dev/null)"
 235
 236 # -----------------------------------------------------------------------------
 237 # URL encode a string
 238
 239 urlencode() {
 240     local string="${1}" strlen encoded pos c o
 241
 242     strlen=${#string}
 243     for (( pos=0 ; pos<strlen ; pos++ ))
 244     do
 245         c=${string:$pos:1}
 246         case "$c" in
 247             [-_.~a-zA-Z0-9])
 248                 o="${c}"
 249                 ;;
 250
 251             *)
 252                 printf -v o '%%%02x' "'$c"
 253                 ;;
 254         esac
 255         encoded+="${o}"
 256     done
 257
 258     REPLY="${encoded}"
 259     echo "${REPLY}"
 260 }
 261
 262 # -----------------------------------------------------------------------------
 263 # convert a duration in seconds, to a human readable duration
 264 # using DAYS, MINUTES, SECONDS
 265
 266 duration4human() {
 267     local s="${1}" d=0 h=0 m=0 ds="day" hs="hour" ms="minute" ss="second" ret
 268     d=$(( s / 86400 ))
 269     s=$(( s - (d * 86400) ))
 270     h=$(( s / 3600 ))
 271     s=$(( s - (h * 3600) ))
 272     m=$(( s / 60 ))
 273     s=$(( s - (m * 60) ))
 274
 275     if [ ${d} -gt 0 ]
 276     then
 277         [ ${m} -ge 30 ] && h=$(( h + 1 ))
 278         [ ${d} -gt 1 ] && ds="days"
 279         [ ${h} -gt 1 ] && hs="hours"
 280         if [ ${h} -gt 0 ]
 281         then
 282             ret="${d} ${ds} and ${h} ${hs}"
 283         else
 284             ret="${d} ${ds}"
 285         fi
 286     elif [ ${h} -gt 0 ]
 287     then
 288         [ ${s} -ge 30 ] && m=$(( m + 1 ))
 289         [ ${h} -gt 1 ] && hs="hours"
 290         [ ${m} -gt 1 ] && ms="minutes"
 291         if [ ${m} -gt 0 ]
 292         then
 293             ret="${h} ${hs} and ${m} ${ms}"
 294         else
 295             ret="${h} ${hs}"
 296         fi
 297     elif [ ${m} -gt 0 ]
 298     then
 299         [ ${m} -gt 1 ] && ms="minutes"
 300         [ ${s} -gt 1 ] && ss="seconds"
 301         if [ ${s} -gt 0 ]
 302         then
 303             ret="${m} ${ms} and ${s} ${ss}"
 304         else
 305             ret="${m} ${ms}"
 306         fi
 307     else
 308         [ ${s} -gt 1 ] && ss="seconds"
 309         ret="${s} ${ss}"
 310     fi
 311
 312     REPLY="${ret}"
 313     echo "${REPLY}"
 314 }
 315
 316 # -----------------------------------------------------------------------------
 317 # email sender
 318
 319 send_email() {
 320     local ret=
 321     if [ "${SEND_EMAIL}" = "YES" ]
 322         then
 323
 324         "${sendmail}" -t
 325         ret=$?
 326
 327         if [ $ret -eq 0 ]
 328         then
 329             echo >&2 "${me}: Sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
 330             return 0
 331         else
 332             echo >&2 "${me}: Failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
 333             return 1
 334         fi
 335     fi
 336
 337     return 1
 338 }
 339
 340 # -----------------------------------------------------------------------------
 341 # pushover sender
 342
 343 send_pushover() {
 344     local apptoken="${1}" usertokens="${2}" when="${3}" url="${4}" status="${5}" title="${6}" message="${7}" httpcode sent=0 user priority
 345
 346     if [ "${SEND_PUSHOVER}" = "YES" -a ! -z "${apptoken}" -a ! -z "${usertokens}" -a ! -z "${title}" -a ! -z "${message}" ]
 347         then
 348
 349         # https://pushover.net/api
 350         priority=-2
 351         case "${status}" in
 352             CLEAR) priority=-1;;   # low priority: no sound or vibration
 353             WARNING) priotity=0;;  # normal priority: respect quiet hours
 354             CRITICAL) priority=1;; # high priority: bypass quiet hours
 355             *) priority=-2;;       # lowest priority: no notification at all
 356         esac
 357
 358         for user in ${usertokens}
 359         do
 360             httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null \
 361                 --form-string "token=${apptoken}" \
 362                 --form-string "user=${user}" \
 363                 --form-string "html=1" \
 364                 --form-string "title=${title}" \
 365                 --form-string "message=${message}" \
 366                 --form-string "timestamp=${when}" \
 367                 --form-string "url=${url}" \
 368                 --form-string "url_title=Open netdata dashboard to view the alarm" \
 369                 --form-string "priority=${priority}" \
 370                 https://api.pushover.net/1/messages.json)
 371
 372             if [ "${httpcode}" == "200" ]
 373             then
 374                 echo >&2 "${me}: Sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
 375                 sent=$((sent + 1))
 376             else
 377                 echo >&2 "${me}: Failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
 378             fi
 379         done
 380
 381         [ ${sent} -gt 0 ] && return 0
 382     fi
 383
 384     return 1
 385 }
 386
 387 # -----------------------------------------------------------------------------
 388 # slack sender
 389
 390 send_slack() {
 391     local webhook="${1}" channels="${2}" when="${3}" username="${4}" image="${5}" httpcode sent=0 channel color
 392
 393     if [ "${SEND_SLACK}" = "YES" -a ! -z "${webhook}" -a ! -z "${channels}" -a ! -z "${username}" -a ! -z "${image}" ]
 394         then
 395
 396         case "${status}" in
 397             WARNING) color="warning" ;;
 398             CRITICAL) color="danger" ;;
 399             CLEAR) color="good" ;;
 400             *) color="#777777" ;;
 401         esac
 402
 403         for channel in ${channels}
 404         do
 405             httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null -X POST --data-urlencode \
 406                 "payload={\"channel\": \"#${channel}\", \"username\": \"${username}\", \"text\": \"${host} ${status_message} - ${chart} (${family}) ${alarm} - click <${goto_url}|here> to view the netdata dashboard.\", \"icon_url\": \"${image}\", \"attachments\": [{\"fallback\": \"${alarm} - ${info}\", \"color\": \"${color}\", \"title\": \"${alarm}\", \"title_link\": \"${goto_url}\", \"text\": \"${chart} (${family}): ${info}\", \"footer\": \"netdata\", \"footer_icon\": \"${images_base_url}/images/seo-performance-128.png\", \"ts\": ${when}}]}" \
 407                 "${webhook}")
 408
 409             if [ "${httpcode}" == "200" ]
 410             then
 411                 echo >&2 "${me}: Sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
 412                 sent=$((sent + 1))
 413             else
 414                 echo >&2 "${me}: Failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
 415             fi
 416         done
 417
 418         [ ${sent} -gt 0 ] && return 0
 419     fi
 420
 421     return 1
 422 }
 423
 424
 425 # -----------------------------------------------------------------------------
 426 # prepare the content of the notification
 427
 428 # the url to send the user on click
 429 urlencode "${NETDATA_REGISTRY_HOSTNAME}" >/dev/null; url_host="${REPLY}"
 430 urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
 431 urlencode "${family}" >/dev/null; url_family="${REPLY}"
 432 urlencode "${name}" >/dev/null; url_name="${REPLY}"
 433 goto_url="${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=${event_id}"
 434
 435 # the severity of the alarm
 436 severity="${status}"
 437
 438 # the time the alarm was raised
 439 duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
 440 duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
 441 raised_for="(was ${old_status,,} for ${duration_txt})"
 442
 443 # the key status message
 444 status_message="status unknown"
 445
 446 # the color of the alarm
 447 color="grey"
 448
 449 # the alarm value
 450 alarm="${name//_/ } = ${value} ${units}"
 451
 452 # the image of the alarm
 453 image="${images_base_url}/images/seo-performance-128.png"
 454
 455 # prepare the title based on status
 456 case "${status}" in
 457         CRITICAL)
 458         image="${images_base_url}/images/alert-128-red.png"
 459         status_message="is critical"
 460         color="#ca414b"
 461         ;;
 462
 463     WARNING)
 464         image="${images_base_url}/images/alert-128-orange.png"
 465         status_message="needs attention"
 466         color="#caca4b"
 467                 ;;
 468
 469         CLEAR)
 470         image="${images_base_url}/images/check-mark-2-128-green.png"
 471         status_message="recovered"
 472                 color="#77ca6d"
 473
 474                 # don't show the value when the status is CLEAR
 475                 # for certain alarms, this value might not have any meaning
 476                 alarm="${name//_/ } ${raised_for}"
 477                 ;;
 478 esac
 479
 480 if [ "${status}" = "CLEAR" ]
 481 then
 482     severity="Recovered from ${old_status}"
 483     if [ $non_clear_duration -gt $duration ]
 484     then
 485         raised_for="(alarm was raised for ${non_clear_duration_txt})"
 486     fi
 487
 488 elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
 489 then
 490     severity="Escalated to ${status}"
 491     if [ $non_clear_duration -gt $duration ]
 492     then
 493         raised_for="(alarm is raised for ${non_clear_duration_txt})"
 494     fi
 495
 496 elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
 497 then
 498     severity="Demoted to ${status}"
 499     if [ $non_clear_duration -gt $duration ]
 500     then
 501         raised_for="(alarm is raised for ${non_clear_duration_txt})"
 502     fi
 503
 504 else
 505     raised_for=
 506 fi
 507
 508 # prepare HTML versions of elements
 509 info_html=
 510 [ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
 511
 512 raised_for_html=
 513 [ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
 514
 515 # -----------------------------------------------------------------------------
 516 # send the slack notification
 517
 518 # slack aggregates posts from the same username
 519 # so we use "${host} ${status}" as the bot username, to make them diff
 520
 521 send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}" "${when}" "${host} ${status}" "${image}"
 522 SENT_SLACK=$?
 523
 524 # -----------------------------------------------------------------------------
 525 # send the pushover notification
 526
 527 send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
 528 <font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
 529 <small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
 530 <small><b>${family}</b><br/>Family<br/>&nbsp;</small>
 531 <small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
 532 <small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
 533 <a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
 534 <small><small>The source of this alarm is line ${src}</small></small>
 535 "
 536
 537 SENT_PUSHOVER=$?
 538
 539 # -----------------------------------------------------------------------------
 540 # send the email
 541
 542 send_email <<EOF
 543 To: ${to_email}
 544 Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
 545 Content-Type: text/html
 546
 547 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 548 <html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
 549 <body style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
 550 <table>
 551     <tbody>
 552     <tr>
 553         <td style="vertical-align: top;" valign="top"></td>
 554         <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
 555             <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
 556                 <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
 557                     <tbody>
 558                     <tr>
 559                         <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
 560                             <div style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
 561                         </td>
 562                     </tr>
 563                     <tr>
 564                         <td bgcolor="${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: ${color};" align="center" valign="top">
 565                             <h1 style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
 566                         </td>
 567                     </tr>
 568                     <tr>
 569                         <td style="vertical-align: top;" valign="top">
 570                             <div style="margin: 0; padding: 20px; max-width: 700px;">
 571                                 <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
 572                                     <tbody>
 573                                     <tr>
 574                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
 575                                             <span>${chart}</span>
 576                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
 577                                         </td>
 578                                     </tr>
 579                                     <tr style="margin: 0; padding: 0;">
 580                                         <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">
 581                                             <span><b>${alarm}</b>${info_html}</span>
 582                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
 583                                         </td>
 584                                     </tr>
 585                                     <tr>
 586                                         <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">
 587                                             <span>${family}</span>
 588                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
 589                                         </td>
 590                                     </tr>
 591                                     <tr style="margin: 0; padding: 0;">
 592                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
 593                                             <span>${severity}</span>
 594                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
 595                                         </td>
 596                                     </tr>
 597                                     <tr style="margin: 0; padding: 0;">
 598                                         <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>${date}</span>
 599                                             <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
 600                                         </td>
 601                                     </tr>
 602                                     <tr style="margin: 0; padding: 0;">
 603                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
 604                                             <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
 605                                         </td>
 606                                     </tr>
 607                                     <tr style="text-align: center; margin: 0; padding: 0;">
 608                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code>
 609                                         </td>
 610                                     </tr>
 611                                     <tr style="text-align: center; margin: 0; padding: 0;">
 612                                         <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
 613                                             <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance monitoring.
 614                                         </td>
 615                                     </tr>
 616                                     </tbody>
 617                                 </table>
 618                             </div>
 619                         </td>
 620                     </tr>
 621                     </tbody>
 622                 </table>
 623             </div>
 624         </td>
 625     </tr>
 626     </tbody>
 627 </table>
 628 </body>
 629 </html>
 630 EOF
 631
 632 SENT_EMAIL=$?
 633
 634 # -----------------------------------------------------------------------------
 635 # let netdata know
 636
 637 # we did send somehting
 638 [ ${SENT_EMAIL} -eq 0 -o ${SENT_PUSHOVER} -eq 0 -o ${SENT_SLACK} -eq 0 ] && exit 0
 639
 640 # we did not send anything
 641 exit 1