Good server monitoring script / program

[S2S-Robert]

I am looking for a good server monitoring program or script that allows checking of services and if a service on another server is down then it should e-mail me (actually, an e-mail 2 sms provider) to let me know it's down.

The program I've found was :

http://www.linvision.com/checkservice/

But does anybody have any information about either this program or any other program / script that allows this? It should be very easily installable preferably ofcourse ;)

[ProWebUK]

You could develop a custom script..... theres SIM if you want something already done... theres DA service monitor you will already have...

A custom script (to get you started if you wish to use):


#!/bin/sh
#
# Script to determine if an application is running or not

#################################

# User definable variables:

# examples: httpd, vm-pop3d, exim, proftpd, sshd
APPLICATION="httpd"

APP_STARTSCRIPT="/etc/init.d/httpd"

DATE_TIME=`date +'%D %T'`

CUSTOM_LOG="/var/log/monitor.log"

#################################

# Check processes and count how many are from the appliaction you wish to monitor
# If there are no processes that exist for the specified application the service will be considered down

check=`ps -aux | grep -c httpd` >> /dev/null

# Determine what we should do now...

if test $check -lt 1 then

# If processes for the specified application do *not* exist:
# Write to the log file...

echo "$DATE_TIME: $APPLICATION appears to be offline, Attempting to restart." >> $CUSTOM_LOG

# Restart the service

$APP_STARTSCRIPT restart >> /dev/null

# If you wish to run anything if processes exist run an else command below... if theres nothing else end the if statement above

fi



Chris

[RSanders]

http://www.nagios.org/

This is what I use, it scales very well (where checkserver dies around a few hundred services) and is very reliable. At first the configuration is tricky, but after you get it, you've got it.