nagios is running but none of the check are happening

[mohan23]

We are monitoring thousand of Linux/Windows machines using Nagios, how do we make sure that nagios checks are happening fine.

We are seeing scenario where nagios is running but none of the check are happening from nagios. Any help will be highly appreciated

[benjaminsmith]

Hi @mohan23,

Just to clarify, is this for Nagios XI or Nagios Core as I don't see a Core support plan associated with your account. Do you have active checks enabled? If you go to interface and click on a host, when was the last check?

1. It's possible that the web GUI is up but the monitorin engine is not running. What is the output of the following command?

Code: Select all

systemctl status nagios
# or
service nagios status

2. Check the nagios log for error messages. What is the output of the following?

Code: Select all

tail /usr/local/nagios/var/nagios.log