Eventhandlers
Capacci Thomas
mrcapacci at free.fr
Fri Sep 10 20:47:08 CEST 2004
Martin, Stanley G [CGEY Contractor for Sprint] a écrit :
> I use eventhandlers all the time. What's the question?
Hi
i am trying to make an eventhandler which allows nagios to restart httpd
when it's stopped. I've followed documentation step to step.
i've enable event handler in nagios.cfg
i've defined first a service:
define service{
use generic-service ; Name of service template to use
host_name 192.168.10.1
service_description HTTPD
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
event_handler restart-http
contact_groups linux-admins
notification_interval 120
notification_period 24x7
notification_options w,u,c,r
check_command restart-http
event_handler_enabled 1
}
so this event correesponds to this service:
define service{
use generic-service ; Name of service template to use
host_name 192.168.10.1
service_description HTTP
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
contact_groups linux-admins
notification_interval 120
notification_period 24x7
notification_options w,u,c,r
check_command check_http
event_handler_enabled 1
}
i wasn't shure about the option event_handler_enabled so i put it in
both services
then i've defined the command:
define command{
command_name restart-httpd
command_line /usr/local/nagios/libexec/eventhandlers/restart-http
$SERVICESTATE$ $STATETYPE$ $SERVICEATTEMPT$
}
i've placed this command definition in miscommands.cfg as the
documentation tells this is where eventhandlers commands are stored
and a script:
#!/bin/sh
case "$1" in
OK)
;;
WARNING)
;;
UNKNOWN)
;;
CRITICAL)
case "$2" in
SOFT)
case "$3" in
3)
echo -n "Redémarrage du service HTTP (3rd soft critical state)..."
/usr/bin/ssh nagios at 192.168.10.1 "sudo /etc/init.d/httpd restart"
;;
esac
;;
HARD)
echo -n "Redémarrage HTTP..."
/usr/bin/ssh nagios at 192.168.10.1 "sudo /etc/init.d/httpd restart"
;;
esac
;;
esac
exit 0
The script is working, i've tested it both on machine that support
nagios and on the remote host.
Nagios says service HTTPD (the restart-http service not the check-http)
is status ok but status information tells (No output!). I've stopped
httpd to watch the eventhandler and nothing happens.
I'll be very happy to know how make this whole thing work fine, i've
been looking for issue since several days now.
Hope to read you soon.
Regards.
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