Enhanced Nagios Email Notification Script

notify.sh

#!/usr/local/bin/bash

NAGIOS_BASEURL="https://mynagios.server.tld"
NAGIOS_CGIURL="${NAGIOS_BASEURL}/nagios/cgi-bin/"

function hostgroup_links {
    URL="${NAGIOS_CGIURL}status.cgi?hostgroup="
    [ -n "$*" ] && echo $* | tr ',' "\n" | sed -e 's,^,  ,' -e "s,^  \([^ ]*\)$,  \1  (${URL}\1)," || echo '  NONE';
}

function servicegroup_links {
    URL="${NAGIOS_CGIURL}status.cgi?servicegroup="
    [ -n "$*" ] && echo $* | tr ',' "\n" | sed -e 's,^,  ,' -e "s,^  \([^ ]*\)$,  \1  (${URL}\1)," || echo '  NONE';
}

function format_list {
    [ -n "$*" ] && echo $* | tr ',' "\n" | sed -e 's/^/  /' || echo '  NONE';
}

function notify_service_short {
cat <<EOT
${NAGIOS_SERVICESTATE} - ${NAGIOS_SERVICEDESC} - "${NAGIOS_SERVICEOUTPUT}"
EOT
}

function notify_service_long {
cat <<EOT
${NAGIOS_SERVICESTATE} - ${NAGIOS_SERVICEDESC} (${NAGIOS_SERVICEDISPLAYNAME})

Result: "${NAGIOS_SERVICEOUTPUT}"

EOT
if [ "${NAGIOS_NOTIFICATIONTYPE}" = "ACKNOWLEDGEMENT" ] ; then
cat <<EOT
----------------------------------------------------------------------
ACKNOWLEDGEMENT
----------------------------------------------------------------------
Author:    ${NAGIOS_SERVICEACKAUTHOR}
Comment:   ${NAGIOS_SERVICEACKCOMMENT}

EOT
fi
cat <<EOT
----------------------------------------------------------------------
SERVICE STATE INFORMATION
----------------------------------------------------------------------
Address:                  ${NAGIOS_HOSTADDRESS}
Status:                   ${NAGIOS_SERVICESTATE} (for ${NAGIOS_SERVICEDURATION})
Attempt:                  ${NAGIOS_SERVICEATTEMPT}/${NAGIOS_MAXSERVICEATTEMPTS} (${NAGIOS_SERVICESTATETYPE} state)
Last Check Time:          $(echo "$(( $(date +%s) - $NAGIOS_LASTSERVICECHECK ))s ago")
Check Latency / Duration: ${NAGIOS_SERVICELATENCY} / ${NAGIOS_SERVICEEXECUTIONTIME} seconds
Last State Change:        $(echo "$(( $(date +%s) - $NAGIOS_LASTSERVICESTATECHANGE ))s ago")
Last Notification:        ${NAGIOS_LONGDATETIME} (notification ${NAGIOS_NOTIFICATIONNUMBER})

Full Output:
$NAGIOS_LONGSERVICEOUTPUT

Notified:
$(format_list ${NAGIOS_NOTIFICATIONRECIPIENTS} | sort -n)

Member of:
$(servicegroup_links ${NAGIOS_SERVICEGROUPNAMES})
----------------------------------------------------------------------
EOT
}

function notify_host_short {
cat <<EOT
${NAGIOS_HOSTSTATE} - ${NAGIOS_HOSTNAME} - "${NAGIOS_HOSTOUTPUT}"
EOT
}

function notify_host_long {
cat <<EOT
${NAGIOS_HOSTSTATE} - ${NAGIOS_HOSTNAME} (${NAGIOS_HOSTALIAS})

Result: "${NAGIOS_HOSTOUTPUT}"

EOT
if [ "${NAGIOS_NOTIFICATIONTYPE}" = "ACKNOWLEDGEMENT" ] ; then
cat <<EOT
----------------------------------------------------------------------
ACKNOWLEDGEMENT
----------------------------------------------------------------------
Author:    ${NAGIOS_HOSTACKAUTHOR}
Comment:   ${NAGIOS_HOSTACKCOMMENT}

EOT
fi
cat <<EOT
----------------------------------------------------------------------
HOST STATE INFORMATION
----------------------------------------------------------------------
Address:                  ${NAGIOS_HOSTADDRESS}
Status:                   ${NAGIOS_HOSTSTATE} (for ${NAGIOS_HOSTDURATION})
Attempt:                  ${NAGIOS_HOSTATTEMPT}/${NAGIOS_MAXHOSTATTEMPTS} (${NAGIOS_HOSTSTATETYPE} state)
Last Check Time:          $(echo "$(( $(date +%s) - $NAGIOS_LASTHOSTCHECK ))s ago")
Check Latency / Duration: ${NAGIOS_HOSTLATENCY} / ${NAGIOS_HOSTEXECUTIONTIME} seconds
Last State Change:        $(echo "$(( $(date +%s) - $NAGIOS_LASTHOSTSTATECHANGE ))s ago")
Last Notification:        ${NAGIOS_LONGDATETIME} (notification ${NAGIOS_NOTIFICATIONNUMBER})

Full Output:
$NAGIOS_LONGHOSTOUTPUT

Host services:
  $NAGIOS_TOTALHOSTSERVICESOK OK
  $NAGIOS_TOTALHOSTSERVICESWARNING Warning
  $NAGIOS_TOTALHOSTSERVICESUNKNOWN Unknown
  $NAGIOS_TOTALHOSTSERVICESCRITICAL Critical
  ----------
  $NAGIOS_TOTALHOSTSERVICES Total

Notified:
$(format_list ${NAGIOS_NOTIFICATIONRECIPIENTS} | sort -n)

Member of:
$(hostgroup_links ${NAGIOS_HOSTGROUPNAMES})
----------------------------------------------------------------------
EOT
}

o_debug=0
o_host=0
o_service=0
o_brief=0

while getopts ":dhsb" opt ; do
    case $opt in
        d)  o_debug=1 ;;
        h)  o_host=1 ;;
        s)  o_service=1 ;;
        b)  o_brief=1 ;;
    esac
done

if [ "$o_host" -eq "$o_service" ] ; then
    echo "ERROR: -h and -s are mutually exclusive"
    exit 1
fi

if [ $o_host -eq 1 ] ; then
    [ $o_brief -eq 0 ] && notify_host_long || notify_host_short
fi

if [ $o_service -eq 1 ] ; then
    [ $o_brief -eq 0 ] && notify_service_long || notify_service_short
fi

if [ $o_debug -eq 1 ] ; then
cat <<EOT

----------------------------------------------------------------------
DEBUG
--Args----------------------------------------------------------------
$0 $@
\$o_debug   = $o_debug
\$o_host    = $o_host
\$o_service = $o_service
\$o_brief   = $o_brief
--Environment---------------------------------------------------------
$(env | sort -n)
----------------------------------------------------------------------
EOT
fi