Created
January 3, 2019 14:15
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Monitor Server Availability that doesn't run a webserver; ICMP Checks.
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#!/bin/bash | |
NOTIFYEMAIL=receivingemailaccount@domain.com | |
SENDEREMAIL=sendingemailaccount@domain.com | |
SERVER=fqdnoripaddress | |
PAUSE=300 | |
FAILED=0 | |
DEBUG=0 | |
while true | |
do | |
/usr/bin/ping -c 5 $SERVER > /dev/null 2>&1 | |
CS=$? | |
# For debugging purposes | |
if [ $DEBUG -eq 1 ] | |
then | |
echo "STATUS = $CS" | |
echo "FAILED = $FAILED" | |
if [ $CS -ne 0 ] | |
then | |
echo "$SERVER is down" | |
elif [ $CS -eq 0 ] | |
then | |
echo "$SERVER is up" | |
fi | |
fi | |
# If the server is down and no alert is sent - alert | |
if [ $CS -ne 0 ] && [ $FAILED -eq 0 ] | |
then | |
FAILED=1 | |
if [ $DEBUG -eq 1 ] | |
then | |
echo "$SERVER failed" | |
fi | |
if [ $DEBUG = 0 ] | |
then | |
echo "$SERVER went down $(date)" | mutt -s "$SERVER went down" "$NOTIFYEMAIL" | |
fi | |
# If the server is back up and no alert is sent - alert | |
elif [ $CS -eq 0 ] && [ $FAILED -eq 1 ] | |
then | |
FAILED=0 | |
if [ $DEBUG -eq 1 ] | |
then | |
echo "$SERVER is back up" | |
fi | |
if [ $DEBUG = 0 ] | |
then | |
echo "$SERVER is back up $(date)" | mutt -s "$SERVER is back up again" "$NOTIFYEMAIL" | |
fi | |
fi | |
sleep $PAUSE | |
done |
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Place above script in /usr/local/bin
Place the following in a file (servercheck-name.service) at /etc/systemd/system
/-------------------------------------------/
[Unit]
After=network.target
[Service]
ExecStart=/usr/local/bin/monitor-website-systemdaemon.sh
[Install]
WantedBy=default.target
/-------------------------------------------/
After both files are placed:
systemctl enable servercheck-name.service
systemctl start servercheck-name.service
systemctl status servercheck-name.service