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Accepted
Antoine Benkemoun
Asked: 2010-12-21 08:56:49 +0800 CST

Have Nagios execute a command when it detects a down host

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I would like Nagios to execute a Bash command/script when it detects a host down or up. This would allow me to react to down hosts to some degree which would be very interesting.

How would I do this ?

monitoring nagios

2 Answers

  1. Best Answer
    • 7

  2. into your commands file add the command you need 

    define command{
# try this before

command_name my_restart
command_line /usr/lib64/nagios/plugins/my_restart.sh $HOSTADDRESS$ $SERVICESTATE$ $SERVICESTATETYPE$ $SERVICEATTEMPT$
}

    into your service defination

    define service{
 .....
event_handler           my_restart
 ....

    }

    the arguments that you receive into your script are the ones defined into the command file, you can see them as well by doing echo $@ into your script - is important to know the host address in case that you will call against a remote host and the service state (you take different actions on CRITICAL, OK or WARNING)

    i suggest you have some logging into your script at least at the beginning.

    • 3