One common configuration issue with Nagios 3 running on Ubuntu is getting the Service Commands menu to work correctly in the web portal. By default, it is visible in the UI, but disabled on the server backend. In Ubuntu, you will recieve the cryptic error Could not stat() command file pointing to /var/lib/nagios3/rw/nagios.cmd. This can…
There is a known error when your Nagios Monitoring Server is running Ubuntu 16.04 and you are trying to monitor a server with a newer version of Ubuntu like Ubuntu 18.04. In Ubuntu 18.04, NRPE uses a 2048 bit DH key, but in earlier versions of NRPE use a 512…
By default the nagiosadmin account is one you login to the web interface with. To add your own users, you can follow these commands: Add user to the htpasswd file Next edit the Nagios cgi.cfg file to grant the relevant permissions: I wanted to same level of access as nagiosadmin,…