Nagios

In the previous post How to install Nagios on CentOS 5 or 6 , I explained the overview, installation and configuration of Nagios 3.0 on a CentOS Server. In the following three chapters, I’ll explain how to monitor a remote Linux host and the various services running on the remote host.  Also, please refer to all our Nagios articles. I. Overview II. 6 …

The installation of PNP will be described in more detail. It is expected that nagios was compiled from source and is located in /usr/local/nagios. Attention: The description applies to the developer version PNP 0.6.0. Please note that PNP has to be configured after the installation. Make and more The installation of PNP is controlled by makefiles. The system is analyzed after invocation …

If you’re updating nagios, and/or you are trying to reschedule checks manually, and you get the error below: Error: Could not open command file ‘/usr/local/nagios/var/rw/nagios.cmd’ for update! Then it means that the permissions on the folder are messed up. Don’t bother setting up the permissions on the file itself, nagios.cmd,  since that file gets recreated very often, so: chown nagios.nagcmd …

Introduction This guide is intended to provide you with simple instructions on how to install Nagios from source (code) on CentOS and have it monitoring your local machine inside of 20 minutes. No advanced installation options are discussed here – just the basics that will work for 95% of users who want to get started. These instructions were written based …