I'm running Nagios 3.5.1 and I'm getting an error saying there's an error in my config file.
When I run nagios -v /etc/nagios3/conf.d/hosts.cfg, I get this error
Reading configuration data... Error in configuration file '/etc/nagios3/conf.d/hosts.cfg' - Line 5 (NULL value)
Line 5 is the first like with content. Lines 1-4 are comments. When I remove 1-4, the error moves to the first line still. And commenting out the first host just moves the same error lower.
My hosts.cfg is not complicated
define host {
use server
address 10.203.130.187
host_name production-mgmt-nagios-server-20140325-10-203-130-187
hostgroups all,linux,nagios-server
}
and so on.
Simplifying with one host or even the example host gives the same error.
Creating a new file and typing a basic version gives the same error.
Running out of ideas and anything will be appreciated. Thank you!
You are correct. As per the documentation for Nagios 3.x for configuration verification you are to run the following command:
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
And assuming you have no errors or warnings that might cause issues restart Nagios. The restart command will depend on your OS Flavour.