:~$ sudo nano /usr/local/nagios/etc/objects/commands.cfgĪt the end of the file, add the following: define command 5.- Adding a command to monitoring the clientĪgain, save the changes and close the file. :~$ sudo mkdir /usr/local/nagios/etc/serversĪfter that, another file has to be modified to add a command that the Nagios server has to run to communicate with the client.

You do it by decomposing the next line: cfg_dir=/usr/local/nagios/etc/servers 4.- Configuring the Nagios agent on the serverĪgain, save the changes and close the file. :~$ sudo nano /usr/local/nagios/etc/nagios.cfg The first one is the Nagios configuration file where we have to enable the server folder. Now that it is installed, some configuration files need to be modified. So, on the server open a terminal and run the following: :~$ sudo apt install nagios-nrpe-plugin 3.- Installing the Nagios agent on the server This is so that you can establish communication with the client. It is now necessary to install NRPE on the server. :~$ sudo systemctl restart nagios-nrpe-serverįinally, we check if the agent is working with the following command: :~$ /usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20 Then save the changes and close the file.įor all these changes to take effect, the Nagios client service has to be restarted. However, you can specify multiple IP addresses if there are multiple Nagios servers. In the allowed_hosts directive add the IP address of the computer where Nagios is installed.

When the installation is finished, a configuration file must be modified to tell the client where the Nagios server is. And run the following: :~$ sudo apt-get install nagios-nrpe-server nagios-plugins 1.- Install Nagios agent on Ubuntu 18.04 / Linux Mint 19 So, open a terminal in the client operating system. The big advantage is that this agent is available in the official Ubuntu repositories and you don’t have to do much to install it.

Install kaseya agent in linux mint