Nagios service active only when other service is failing

Posted by Laimoncijus on Server Fault See other posts from Server Fault or by Laimoncijus
Published on 2012-07-09T08:46:42Z Indexed on 2012/07/09 9:17 UTC
Read the original article Hit count: 187

Filed under:

nagios

Is is possible to define service to be active only the times while other service is failing?

Consider following example:

2 hosts available: HostA (primary) and HostB (backup).
Nagios service, which monitors amount of active connections to the host:
- gives OK when amount of connections to host > 0
- gives FAILURE when amount of connections to host = 0

If setup nagios service to monitor both hosts: HostA and HostB - it will give me OK for HostA (while it is primary and all connections normally goes to it) and FAIL for HostB (while it is backup and will receive no connections while HostA is alive).

Can I make the nagios service for HostB somehow depend on sevice of HostA and give no failures (or maybe be inactive) up to the moment the service of HostA starts failing?

Related posts about nagios

Nagios Creating lots of zombie process

as seen on Server Fault - Search for 'Server Fault'
In my monitoring box, I have lots of zombie process created by nagios and they gets remove quickly also. I am using active checks to perform monitoring of my servers. I accumulated the defunct processes created using the following command: $ top -d 0.25 -b -n 20 > topout.txt This collected the… >>> More
Nagios: NRPE: Unable to read output, Can't find the reason, can you?

as seen on Server Fault - Search for 'Server Fault'
I have a Nagios server and a monitored server. On the monitored server: [root@Monitored ~]# netstat -an |grep :5666 tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN [root@Monitored ~]# locate check_kvm /usr/lib64/nagios/plugins/check_kvm [root@Monitored ~]#… >>> More
nagios NRPE: Unable to read output

as seen on Server Fault - Search for 'Server Fault'
I currently set up a script to restart my http servers + php5 fpm but can't get it to work. I have googled and have found that mostly permissions are the problems of my error but can't figure it out. I start my script using /usr/lib/nagios/plugins/check_nrpe -H bart -c restart_http This is the… >>> More
Nagios returns "No output returned from plugin" running process

as seen on Server Fault - Search for 'Server Fault'
I have a nagios server and a bunch of nagios clients that i currently monitor. All the clients are setup with the following nrpe configuration. check_users, check_load... metrics are successfully displayed on the nagios interface but check_nginx and check_server_proxy displayed as "Unknown"-(No output… >>> More
Error with Apache, Nagios and Snorby integration

as seen on Server Fault - Search for 'Server Fault'
I'm trying to use apache to serve two different websites (Nagios and Snorby). The problem is that when I try to see the "/snorby" website, apache sends me the "It works" page. If I try to access to "/nagios" it works perfectly. Snorby is running under ruby passenger .This are the config files. <VirtualHost… >>> More

Developer IT