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You need to have a Nagios NRPE server running on the host.
The host need to have the command /usr/bin/cl_status accessible to user nrpe.
The script will return a Nagios code of:
OK: when the number of registered nodes and active nodes is equal
WARNING: If at least one node is active
CRITICAL: If the cluster status could not be accessed or if no nodes are active
You can get it here: media:check_heartbeat.sh
Copy it to your nagios plugins directory, in my case: /usr/local/nagios/libexec/
# cp check_hearbeat.sh /usr/local/nagios/libexec/check_heartbeat.sh # chmod 755 /usr/local/nagios/libexec/check_heartbeat.sh
Add the following to /etc/nagios/nrpe_local.cfg
command[check_heartbeat]=/usr/local/nagios/libexec/check_heartbeat.sh
and reload nrpe server:
# /etc/init.d/nagios-nrpe-server reload
Add the following template:
# check LVS Heartbeat
define service{
use generic-service
name check-heartbeat
service_description Linux HA LVS
check_command check_nrpe!check_heartbeat
}
Add the following service definition:
#check heartbeat
define service{
use check-heartbeat
host_name lvs1, lvs2
}