Restart Service Bash Script

XaViaR · 01-04-2006, 03:28 PM

Hello,

I am trying to create a bash script that will start a service if the service stops for some reason.
Is this possible?

I know that I will have to run this script as a cron, and I will probably check the status of this service every five minutes or so.

Does anyone have a script like this handy? If so, could you please paste it? :-)

Thanks if advance!

ivanatora · 01-04-2006, 04:51 PM

You are completely right about the cron daemon. So I assume you know how to set up it to start the following script at 5 minutes

Well, I could give you a perl script

If that suits you.

Code:

#!/usr/bin/perl
$pid = `ps -Af| grep your_program|grep -v grep|awk '{print $2}'`;
chomp $pid;
if ($pid eq ''){
        system("a_line_that_starts_your_program with some arguments &"); # let start your program
}
else { #program is running
}

XaViaR · 01-04-2006, 05:35 PM

Thanks! You are right...I know how to setup the cron job. :-)

Thanks again!

XaViaR · 01-04-2006, 07:32 PM

For those who are interested, I converted ivanatora script to bash. I hope this helps someone! Thanks again ivanatora!

# -- Copy below here --

#!/bin/sh

#--------------------------------------------------------------------------
# This Bash script that will check to see if a serivce is started. If not,
# then it will start the service.
#--------------------------------------------------------------------------

# Checking for PID of service and storing it in a variable
#
PID=`ps -A | grep kaid | awk '{print $1}'`

# Searching for PID. If does not exist, then starting service.
#
if [ "$PID" = '' ] ; then
/etc/init.d/kaid
else
echo "Service is already started"
fi

# -- End of Script --

# -- Copy Above here --

ivanatora · 01-05-2006, 02:10 AM

You are most welcome