UNIX for Dummies Questions & Answers

Does anyone know if there is a UNIX-tool available that constantly will check if (some specific) deamons are running and will notify (via email) if one has failed/stopped?
I searched the web, but so far didn't find anything.

To mannually check the deamon what you can do is
type $ ps -ef | grep <daemon process name> if its running it will show the process with a pid. If its not you may try to
$ /etc/init.d/<daemon process name> [start|stop|restart]. This is only a mannual way instruction i never did a daemon process stop alarm thru mail. Perhaps some others might have some idea.

this can be done by writing a shell script
I have choosen to write this in korn shell
---------------------------------------------


#!/usr/bin/ksh

PROCESSCOUNT=$(ps -ef |grep -v grep |grep -cw <daemon process name>

if [ $PROCESSCOUNT -eq 0 ]
then
mailx -s "daemon process not running" myaddress@mydomain <msg body

fi


---------------------------------------------
place the above script in crontab and schedule it
to run every 5 mins depends on how soon you want to be notify

please let me know the out come of the above solution.

Here is a fairly simple shell script that we use. It incorporates Killerserv's use of ps command.


You can run this as a cron job every 5 or so...

cat chk_daemon
_______________________
# check daemon
ps -ef | grep -v grep | grep daemon
# if not found - equals to 1, start it
if [ $? -eq 1 ]
then
/sbin/init.d/daemon start
else
echo "eq 0 - daemon found - do nothing"
fi
________________________