Linux HA Heartbeat/Monitoring with Nagios

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Contents [hide] 　　1Requirements 　　2Linux HA Server 　　2.1Script 　　2.2Configuration 　　3Nagios Server 　　3.1template.cfg 　　3.2host file

Requirements
　　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.
Linux HA Server
Script
　　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
Configuration
　　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
Nagios Server
template.cfg
　　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
}
host file
　　Add the following service definition:
#check heartbeat
define service{
use check-heartbeat
host_name   lvs1, lvs2
}
Retrieved from &quot;http://wiki.debuntu.org/wiki/Linux_HA_Heartbeat/Monitoring_with_Nagios&quot;
Categories: Monitoring | Network | Nagios | Heartbeat