Nagios
Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.
Check command
/usr/local/nagios/libexec/check_nrpe -H 192.168.1.1 -c check_metric
Sample /etc/nagios/nrpe config file on CentOS 6.3 64 bit, host checked by Nagios
log_facility=daemon pid_file=/var/run/nrpe/nrpe.pid server_port=5666 nrpe_user=nrpe nrpe_group=nrpe #nagios server 192.168.1.2 allowed_hosts=196.168.1.2,127.0.0.1 dont_blame_nrpe=0 debug=1 command_timeout=60 connection_timeout=300 include_dir=/etc/nrpe.d/ command[check_users]=/usr/lib64/nagios/plugins/check_users -w 5 -c 10 command[check_load]=/usr/lib64/nagios/plugins/check_load -w 15,10,5 -c 30,25,20 command[check_hda1]=/usr/lib64/nagios/plugins/check_disk -w 20% -c 10% -p /dev/hda1 command[check_zombie_procs]=/usr/lib64/nagios/plugins/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/lib64/nagios/plugins/check_procs -w 150 -c 200
check_oracle_health shows warning when OK
http://forums.meulie.net/viewtopic.php?f=62&t=6282
Nagios shows Warning when is OK
Run the command locally on the target server with the user nrpe
- su nrpe
- mycommand.py
- echo $?
If there are problems of permissions or similar wqhen running with the user nrpe solve them Always test the commands under the user nrpe.
If the command creates or uses files, delete them if the command tested with root, so they are created properly with the right permissions.