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 "${message}" ]
 298         then
 299
 300         priority=0
 301         [ "${status}" = "CRITICAL" ] && priority=1
 302
 303         for user in ${usertokens}
 304         do
 305             httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null \
 306                 --form-string "token=${apptoken}" \
 307                 --form-string "user=${user}" \
 308                 --form-string "html=1" \
 309                 --form-string "title=${title}" \
 310                 --form-string "message=${message}" \
 311                 --form-string "timestamp=${when}" \
 312                 --form-string "url=${url}" \
 313                 --form-string "url_title=Open netdata dashboard to view the alarm" \
 314                 --form-string "priority=${priority}" \
 315                 https://api.pushover.net/1/messages.json)
 316
 317             if [ "${httpcode}" == "200" ]
 318             then
 319                 echo >&2 "${me}: Sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
 320                 sent=$((sent + 1))
 321             else
 322                 echo >&2 "${me}: Failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
 323             fi
 324         done
 325
 326         [ ${sent} -gt 0 ] && return 0
 327     fi
 328
 329     return 1
 330 }
 331
 332 # -----------------------------------------------------------------------------
 333 # slack sender
 334
 335 send_slack() {
 336     local webhook="${1}" channels="${2}" when="${3}" username="${4}" image="${5}" author="${6}" httpcode sent=0 channel color
 337
 338     if [ "${SEND_SLACK}" = "YES" -a ! -z "${webhook}" -a ! -z "${channels}" -a ! -z "${username}" -a ! -z "${image}" -a ! -z "${author}" ]
 339         then
 340
 341         case "${status}" in
 342             WARNING) color="warning" ;;
 343             CRITICAL) color="danger" ;;
 344             CLEAR) color="good" ;;
 345             *) color="#777777" ;;
 346         esac
 347
 348         for channel in ${channels}
 349         do
 350             httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null -X POST --data-urlencode \
 351                 "payload={\"channel\": \"#${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\": ${when}}]}" \
 352                 "${webhook}")
 353
 354             if [ "${httpcode}" == "200" ]
 355             then
 356                 echo >&2 "${me}: Sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
 357                 sent=$((sent + 1))
 358             else
 359                 echo >&2 "${me}: Failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
 360             fi
 361         done
 362
 363         [ ${sent} -gt 0 ] && return 0
 364     fi
 365
 366     return 1
 367 }
 368
 369
 370 # -----------------------------------------------------------------------------
 371 # prepare the content of the notification
 372
 373 # the url to send the user on click
 374 urlencode "${NETDATA_REGISTRY_HOSTNAME}" >/dev/null; url_host="${REPLY}"
 375 urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
 376 urlencode "${family}" >/dev/null; url_family="${REPLY}"
 377 urlencode "${name}" >/dev/null; url_name="${REPLY}"
 378 goto_url="${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=${event_id}"
 379
 380 # the severity of the alarm
 381 severity="${status}"
 382
 383 # the time the alarm was raised
 384 duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
 385 duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
 386 raised_for="(was ${old_status,,} for ${duration_txt}"
 387
 388 # the key status message
 389 status_message="status unknown"
 390
 391 # the color of the alarm
 392 color="grey"
 393
 394 # the alarm value
 395 alarm="${name//_/ } = ${value} ${units}"
 396
 397 # the image of the alarm
 398 image="${images_base_url}/images/seo-performance-128.png"
 399
 400 # prepare the title based on status
 401 case "${status}" in
 402         CRITICAL)
 403         image="${images_base_url}/images/alert-128-red.png"
 404         status_message="is critical"
 405         color="#ca414b"
 406         ;;
 407
 408     WARNING)
 409         image="${images_base_url}/images/alert-128-orange.png"
 410         status_message="needs attention"
 411         color="#caca4b"
 412                 ;;
 413
 414         CLEAR)
 415         image="${images_base_url}/images/check-mark-2-128-green.png"
 416         status_message="recovered"
 417                 color="#77ca6d"
 418
 419                 # don't show the value when the status is CLEAR
 420                 # for certain alarms, this value might not have any meaning
 421                 alarm="${name//_/ }"
 422                 ;;
 423 esac
 424
 425 if [ "${status}" = "CLEAR" ]
 426 then
 427     severity="Recovered from ${old_status}"
 428     if [ $non_clear_duration -gt $duration ]
 429     then
 430         raised_for="(alarm was raised for ${non_clear_duration_txt})"
 431     fi
 432
 433 elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
 434 then
 435     severity="Escalated to ${status}"
 436     if [ $non_clear_duration -gt $duration ]
 437     then
 438         raised_for="(alarm is raised for ${non_clear_duration_txt})"
 439     fi
 440
 441 elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
 442 then
 443     severity="Demoted to ${status}"
 444     if [ $non_clear_duration -gt $duration ]
 445     then
 446         raised_for="(alarm is raised for ${non_clear_duration_txt})"
 447     fi
 448
 449 else
 450     raised_for=
 451 fi
 452
 453 # prepare HTML versions of elements
 454 info_html=
 455 [ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
 456
 457 raised_for_html=
 458 [ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
 459
 460 # -----------------------------------------------------------------------------
 461 # send the slack notification
 462
 463 # slack aggregates posts from the same username
 464 # so we use "${host} ${status}" as the bot username, to make them diff
 465
 466 send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}" "${when}" "${host} ${status}" "${image}" "${chart} (${family})"
 467 SENT_SLACK=$?
 468
 469 # -----------------------------------------------------------------------------
 470 # send the pushover notification
 471
 472 send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
 473 <font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
 474 <small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
 475 <small><b>${family}</b><br/>Family<br/>&nbsp;</small>
 476 <small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
 477 <small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
 478 <a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
 479 <small><small>The source of this alarm is line ${src}</small></small>
 480 "
 481
 482 SENT_PUSHOVER=$?
 483
 484 # -----------------------------------------------------------------------------
 485 # send the email
 486
 487 send_email <<EOF
 488 To: ${to_email}
 489 Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
 490 Content-Type: text/html
 491
 492 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 493 <html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
 494 <body style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
 495 <table>
 496     <tbody>
 497     <tr>
 498         <td style="vertical-align: top;" valign="top"></td>
 499         <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
 500             <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
 501                 <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
 502                     <tbody>
 503                     <tr>
 504                         <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
 505                             <div style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
 506                         </td>
 507                     </tr>
 508                     <tr>
 509                         <td bgcolor="${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: ${color};" align="center" valign="top">
 510                             <h1 style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
 511                         </td>
 512                     </tr>
 513                     <tr>
 514                         <td style="vertical-align: top;" valign="top">
 515                             <div style="margin: 0; padding: 20px; max-width: 700px;">
 516                                 <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
 517                                     <tbody>
 518                                     <tr>
 519                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
 520                                             <span>${chart}</span>
 521                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
 522                                         </td>
 523                                     </tr>
 524                                     <tr style="margin: 0; padding: 0;">
 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><b>${alarm}</b>${info_html}</span>
 527                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
 528                                         </td>
 529                                     </tr>
 530                                     <tr>
 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>${family}</span>
 533                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
 534                                         </td>
 535                                     </tr>
 536                                     <tr style="margin: 0; padding: 0;">
 537                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
 538                                             <span>${severity}</span>
 539                                             <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</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"><span>${date}</span>
 544                                             <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
 545                                         </td>
 546                                     </tr>
 547                                     <tr style="margin: 0; padding: 0;">
 548                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
 549                                             <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
 550                                         </td>
 551                                     </tr>
 552                                     <tr style="text-align: center; margin: 0; padding: 0;">
 553                                         <td style="font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code>
 554                                         </td>
 555                                     </tr>
 556                                     <tr style="text-align: center; margin: 0; padding: 0;">
 557                                         <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
 558                                             <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance monitoring.
 559                                         </td>
 560                                     </tr>
 561                                     </tbody>
 562                                 </table>
 563                             </div>
 564                         </td>
 565                     </tr>
 566                     </tbody>
 567                 </table>
 568             </div>
 569         </td>
 570     </tr>
 571     </tbody>
 572 </table>
 573 </body>
 574 </html>
 575 EOF
 576
 577 SENT_EMAIL=$?
 578
 579 # -----------------------------------------------------------------------------
 580 # let netdata know
 581
 582 # we did send somehting
 583 [ ${SENT_EMAIL} -eq 0 -o ${SENT_PUSHOVER} -eq 0 -o ${SENT_SLACK} -eq 0 ] && exit 0
 584
 585 # we did not send anything
 586 exit 1