How to do it...

Follow these steps to install and configure Nagios on a Debian, Mint, or Ubuntu monitoring server:

  1. Execute these commands as a root-level user to install Nagios and useful plugins:
        sudo apt-get install nagios3 nagios-plugins-extra
        Sudo apt-get install nagios-nrpe-plugin
  1. When prompted, enter a password for the nagiosadmin user.

Follow these steps to install Nagios on a Red Hat, Fedora, CentOS, and Scientific Linux monitoring server:

  1. Open the /etc/selinux/config file and change the SELINUX parameter to match the following:
        SELINUX=permissive
  1. Execute the following command as a root-level user:
        sudo setenforce 0
  1. Execute this command as a root-level user to install Nagios:
        sudo yum install nagios nagios-plugins-all ...

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