WatchDog watchdog.sh script for checking server running

#!/bin/bash
# Service watchdog script
# Put in crontab to automatially restart services (and optionally email you) if they die for some reason.
# Note: You need to run this as root otherwise you won't be able to restart services.
#
# Example crontab usage:
#
# Strict check for apache2 service every 5 minutes, pipe results to /dev/null
# */5 * * * * sh /root/watchdog.sh apache2 "" > /dev/null
#
# "Loose" check for mysqld every 5 minutes, second parameter is the name of the service
# to restart, in case the application and service names differ. Also emails a report to admin@domain.com
# about the restart.
# */5 * * * * sh /root/watchdog.sh mysqld mysql admin@domain.com > /dev/null
 
# Common daemon names:
# Apache:
# apache2 - Debian/Ubuntu
# httpd - RHEL/CentOS/Fedora
# ---
# MySQL:
# mysql - Debian/Ubuntu
# mysqld - RHEL/CentOS/Fedora
# ---
# Service name
DATE=`date +%Y-%m-%d--%H-%M-%S`
SERVICE_NAME="$1"
SERVICE_RESTARTNAME="$2"
EXTRA_PGREP_PARAMS="-x" #Extra parameters to pgrep, for example -x is good to do exact matching
MAIL_TO="$3" #Email to send restart notifications to
 
#path to pgrep command, for example /usr/bin/pgrep
PGREP="pgrep"
 
#Check if we have have a second param
if [ -z $SERVICE_RESTARTNAME ]
then
RESTART="/sbin/service ${SERVICE_NAME} restart" #No second param
else
RESTART="/sbin/service ${SERVICE_RESTARTNAME} restart" #Second param
fi
 
pids=`$PGREP ${EXTRA_PGREP_PARAMS} ${SERVICE_NAME}`
 
#if we get no pids, service is not running
if [ "$pids" == "" ]
then
$RESTART
if [ -z $MAIL_TO ]
then
echo "$DATE : ${SERVICE_NAME} restarted - no email report configured."
else
echo "$DATE : Performing restart of ${SERVICE_NAME}" | mail -s "Service failure: ${SERVICE_NAME}" ${MAIL_TO}
fi
else
echo "$DATE : Service ${SERVICE_NAME} is still working!"
fi
 
# copylefted from https://gist.github.com/vodolaz095/5073080
 
 
#!/bin/bash
mailto="mymail@mydomain"
 
/bin/bash /root/watchdog.sh mysqld mysqld "$mailto"
/bin/bash /root/watchdog.sh httpd httpd "$mailto"
/bin/bash /root/watchdog.sh pound pound "$mailto"
/bin/bash /root/watchdog.sh redis-server redis "$mailto"
/bin/bash /root/watchdog.sh memcached memcached "$mailto"

/bin/bash /root/watchdog.sh searchd searchd "$mailto"

0 (0)
Article Rating (No Votes)
Rate this article
Attachments
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Full Name
Email Address
Security Code Security Code
Related Articles RSS Feed
RHEL: Bonding network interfaces
Viewed 3715 times since Sat, Jun 2, 2018
Tunnel SSH Connections Over SSL Using ‘Stunnel’ On Debian 7 / Ubuntu 13.10
Viewed 3292 times since Fri, Sep 28, 2018
How to create stunnel with systemd? stunnel
Viewed 9720 times since Thu, Jan 16, 2020
Linux Linux Network Statistics Tools / Commands
Viewed 9178 times since Mon, Sep 21, 2020
linux ssh Remotely Initiated Reverse SSH Tunnel
Viewed 3149 times since Wed, Apr 22, 2020
Configuring VLAN interfaces in Linux
Viewed 5540 times since Mon, May 21, 2018
tcpdump
Viewed 9104 times since Fri, Jul 27, 2018
Linux PAM configuration that allows or deny login via the sshd server
Viewed 1957 times since Wed, Oct 3, 2018
How to sort IP addresses in Linux
Viewed 3610 times since Sun, May 20, 2018
Using stunnel and TinyProxy to obfuscate HTTP traffic
Viewed 6930 times since Fri, Sep 28, 2018