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mail-host-notification.sh
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mail-host-notification.sh
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#!/usr/bin/env bash
#
# Copyright (C) 2012-2018 Icinga Development Team (https://icinga.com/)
# Except of function urlencode which is Copyright (C) by Brian White ([email protected]) used under MIT license
# meshed with html message from https://linuxsuperuser.com/icinga2-html-template/
# and some changes, added some variables so with director you don't have to add values to the command
PROG="`basename $0`"
ICINGA2HOST="`hostname`"
MAILBIN="mail"
# hardcode some things, easier than adding new values to pass that are fix anyway
MAILFROM="[email protected]"
ICINGAWEB2URL="https://icinga2.docufy.de"
if [ -z "`which $MAILBIN`" ] ; then
echo "$MAILBIN not found in \$PATH. Consider installing it."
exit 1
fi
## Function helpers
Usage() {
cat << EOF
Required parameters:
-d LONGDATETIME (\$icinga.long_date_time\$)
-l HOSTNAME (\$host.name\$)
-n HOSTDISPLAYNAME (\$host.display_name\$)
-o HOSTOUTPUT (\$host.output\$)
-r USEREMAIL (\$user.email\$)
-s HOSTSTATE (\$host.state\$)
-t NOTIFICATIONTYPE (\$notification.type\$)
Optional parameters:
-4 HOSTADDRESS (\$address\$)
-6 HOSTADDRESS6 (\$address6\$)
-b NOTIFICATIONAUTHORNAME (\$notification.author\$)
-c NOTIFICATIONCOMMENT (\$notification.comment\$)
-i ICINGAWEB2URL (\$notification_icingaweb2url\$, Default: unset)
-f MAILFROM (\$notification_mailfrom\$, requires GNU mailutils (Debian/Ubuntu) or mailx (RHEL/SUSE))
-v (\$notification_sendtosyslog\$, Default: false)
EOF
}
Help() {
Usage;
exit 0;
}
Error() {
if [ "$1" ]; then
echo $1
fi
Usage;
exit 1;
}
urlencode() {
local LANG=C i c e=''
for ((i=0;i<${#1};i++)); do
c=${1:$i:1}
[[ "$c" =~ [a-zA-Z0-9\.\~\_\-] ]] || printf -v c '%%%02X' "'$c"
e+="$c"
done
echo "$e"
}
## Main
while getopts 4:6::b:c:d:f:hi:l:n:o:r:s:t:v: opt
do
case "$opt" in
4) HOSTADDRESS=$OPTARG ;;
6) HOSTADDRESS6=$OPTARG ;;
b) NOTIFICATIONAUTHORNAME=$OPTARG ;;
c) NOTIFICATIONCOMMENT=$OPTARG ;;
d) LONGDATETIME=$OPTARG ;; # required
f) MAILFROM=$OPTARG ;;
h) Help ;;
i) ICINGAWEB2URL=$OPTARG ;;
l) HOSTNAME=$OPTARG ;; # required
n) HOSTDISPLAYNAME=$OPTARG ;; # required
o) HOSTOUTPUT=$OPTARG ;; # required
r) USEREMAIL=$OPTARG ;; # required
s) HOSTSTATE=$OPTARG ;; # required
t) NOTIFICATIONTYPE=$OPTARG ;; # required
v) VERBOSE=$OPTARG ;;
\?) echo "ERROR: Invalid option -$OPTARG" >&2
Error ;;
:) echo "Missing option argument for -$OPTARG" >&2
Error ;;
*) echo "Unimplemented option: -$OPTARG" >&2
Error ;;
esac
done
shift $((OPTIND - 1))
## Keep formatting in sync with mail-service-notification.sh
for P in LONGDATETIME HOSTNAME HOSTDISPLAYNAME HOSTOUTPUT HOSTSTATE USEREMAIL NOTIFICATIONTYPE ; do
eval "PAR=\$${P}"
if [ ! "$PAR" ] ; then
Error "Required parameter '$P' is missing."
fi
done
## Build the message's subject
SUBJECT="[$NOTIFICATIONTYPE] Host $HOSTDISPLAYNAME is $HOSTSTATE!"
## Set mesage color
if [ "$HOSTSTATE" = "DOWN" ]
then
color=#FF5566
else
color=#44BB77
fi
## Build the notification message
NOTIFICATION_MESSAGE=`cat << EOF
<!DOCTYPE html>
<html>
<head>
<style>
table {
font-family: arial, sans-serif;
border-collapse: collapse;
width: 100%;
}
td, th {
border: 1px solid #1bd0b2;
text-align: left;
padding: 8px;
}
tr:nth-child(even) {
background-color: #fffff;
}
</style>
</head>
<body>
<table>
<th colspan=2 bgcolor=#17B294><center>Icinga Server Monitoring</center></th>
<tr>
<td>Notification Type</td>
<td>$NOTIFICATIONTYPE</td>
</tr>
<tr>
<td>Host</td>
<td>$HOSTDISPLAYNAME</td>
</tr>
<tr>
<td>IP Address</td>
<td>$HOSTADDRESS</td>
</tr>
<tr>
<td>State </td>
<td bgcolor=$color><b>$HOSTSTATE</b></td>
</tr>
<tr>
<td>Date/Time</td>
<td>$LONGDATETIME</td>
</tr>
<tr>
<td>Additional Info</td>
<td>$HOSTOUTPUT</td>
</tr>
<tr>
<td>Comment</td>
<td>[$NOTIFICATIONAUTHORNAME] : $NOTIFICATIONCOMMENT</td>
</tr>
<tr>
<td>Alert History</td>
<td><a target="_blank" href="$ICINGAWEB2URL/dashboard#!/icingaweb2/monitoring/host/history?host=$(urlencode "$HOSTNAME")> Open Dashboard </a></td>
</tr>
</table>
</body>
</html>
EOF
`
## Check whether verbose mode was enabled and log to syslog.
if [ "$VERBOSE" == "true" ] ; then
logger "$PROG sends $SUBJECT => $USEREMAIL"
fi
## Send the mail using the $MAILBIN command.
## If an explicit sender was specified, try to set it.
if [ -n "$MAILFROM" ] ; then
## Modify this for your own needs!
## Debian/Ubuntu use mailutils which requires `-a` to append the header
if [ -f /etc/debian_version ]; then
/usr/bin/printf "%b" "$NOTIFICATION_MESSAGE" | $MAILBIN -a "From: $MAILFROM" -a "Content-type: text/html" -s "$SUBJECT" $USEREMAIL
## Other distributions (RHEL/SUSE/etc.) prefer mailx which sets a sender address with `-r`
else
/usr/bin/printf "%b" "$NOTIFICATION_MESSAGE" | $MAILBIN -r "$MAILFROM" -s "$SUBJECT" $USEREMAIL
fi
else
/usr/bin/printf "%b" "$NOTIFICATION_MESSAGE" \
| $MAILBIN -s "$SUBJECT" $USEREMAIL
fi