Configuring Nagios

Ok, first pain point was getting into Nagio's core CGI web interface. This is easy enough after looking around, just execute the following, and then restart 'httpd':

htpasswd -bc /etc/nagios/htpasswd.users nagios YOURPASSWORD

Of course, you can add as many users as you want. I was also thinking of making this completely open, but that isn't very secure.

Now you will see some errors, when you run the verification script. For my part I mostly had typos, and was confused with the templating of hosts, etc. This took me awhile to figure out.

Two folders needed to be created
-/var/log/nagios/*spool/checkresults*
-/var/log/nagios/*rw

Create a file under /var/log/nagios/rw called 'nagios.cmd'. Chmod it to 755.

Those two new subdirectories *MUST* be chown'd to nagios:nagios and all subitems:

chown -hR nagios:nagios /var/log/nagios/*

Now, I am getting errors on the web UI (the one that comes with Nagios-Core):