How to Monitor Remote Linux System with Nagios via SSH

Step 1 – Setup Key Based SSH. Firstly it's required to make sure that the Nagios server is able to connect the client using ssh without prompting password. ...
Step 2 – Verify SSH Connection. Let's check if you can ssh to the remote machine without password ssh remote.example.com. ...
Step 3 – Configure Check in Nagios.

How do I monitor a remote Linux server with Nagios?
How do I monitor a Nagios remote host?
How do I monitor a Linux server with Nagios core?
Which method would you prefer while monitoring a Linux machine in Nagios?
What is the use of Nagios in Linux?
How do I know if Nagios is installed on Linux?
How do I use Nagios monitoring tool?
How do you add servers in Nagios for monitoring?
How configure Nagios on Linux?
Can Nagios monitor windows?
How install Nrpe in Linux?
How do I add multiple Linux hosts to Nagios?

How do I monitor a remote Linux server with Nagios?

Install Nagios Server.
Monitor Remote Linux Systems With Nagios. On Remote Linux System. Install NRPE Add-on & Nagios Plugins. CentOS / RHEL. Ubuntu / Debian. Configure NRPE Add-on. Configure Nagios Checks. CentOS / RHEL. Ubuntu / Debian. Test Nagios Checks. Firewall. FirewallD. IP Tables. ...
Check Nagios Monitoring.
Conclusion.

How do I monitor a Nagios remote host?

In this setup, NRPE daemon is installed on the remote system to which services need to monitor through Nagios server.
...
How to Monitor Remote Linux Host using Nagios and NRPE

Step 1 – Configure NRPE on Linux Host. ...
Step 2 – Add Linux Host in Nagios. ...
Step 3 – Check Host in Nagios Web Interface.

How do I monitor a Linux server with Nagios core?

Download latest NRPE Plugin with wget command. Then extract the NRPE source. Compile and install the NRPE addon. Now make sure your nagios is able to connect nrpe client on remote Linux system.
...
Configuring Nagios Core to Monitor the Linux Host

Install NRPE Plugin.
Add the Linux Server to the host file.
Configure Services.

Which method would you prefer while monitoring a Linux machine in Nagios?

Another common method of monitoring remote Linux/Unix hosts is to use the NRPE addon. NRPE allows you to execute plugins on remote Linux/Unix hosts. This is useful if you need to monitor local resources/attributes like disk usage, CPU load, memory usage, etc. on a remote host.

What is the use of Nagios in Linux?

Nagios provides complete monitoring of Linux operating systems and distributions – including operating system metrics, service state, process state, file system usage, and more. When you use Nagios to monitor your Linux environment, you're using one of the most powerful Linux monitoring tools on the planet.

How do I know if Nagios is installed on Linux?

Easiest way to check the Nagios Core version is using the Nagios GUI. ~]# /usr/local/nagios/bin/nagios –help Nagios Core 4.1.

How do I use Nagios monitoring tool?

The complete process to install Nagios can be summarized in four steps:

Install Required Packages In The Monitoring Server.
Install Nagios Core, Nagios Plugins And NRPE (Nagios Remote Plugin Executor)
Set Nagios Password To Access The Web Interface.
Install NRPE In Client.

How do you add servers in Nagios for monitoring?

How to Add Windows Host to Nagios Monitoring Server

Install NSClient++ addon on the Windows Machine.
Configure Nagios Server for monitoring Windows Machine.
Add new host and service definitions for Windows machine monitoring.
Restart the Nagios Service.

How configure Nagios on Linux?

Step 1: Install Required Dependencies. ...
Step 2: Create Nagios User and Group. ...
Step 3: Download Nagios Core 4.4. ...
Step 4: Extract Nagios Core and its Plugins. ...
Step 5: Customizing Nagios Configuration. ...
Step 6: Install and Configure Web Interface for Nagios. ...
Step 7: Compile and Install Nagios Plugin.

Can Nagios monitor windows?

Overview. Monitoring private services or attributes of a Windows machine requires that you install an agent on it. This agent acts as a proxy between the Nagios plugin that does the monitoring and the actual service or attribute of the Windows machine.

How install Nrpe in Linux?

How To Install NRPE on CentOS/RHEL 7/6

Step 1 – Install EPEL Repository. NRPE packages and plugins are available under EPEL yum repository, Enable EPEL repository using one of below commands. ...
Step 2 – Install NRPE and Nrpe-plugins. ...
Step 3 – Configure NRPE. ...
Step 4 – Start NRPE Service. ...
Step 5 – Test NRPE from Nagios Server.

How do I add multiple Linux hosts to Nagios?

How to Add Linux Host to Nagios Monitoring Server

Install NRPE Add-on and Nagios Plugins on remote Linux host: ...
Add Nagios servers IP address, separated by a comma as mention below. ...
Verify Nagios plugin: ...
Command to start nrpe service on Linux host: ...
Auto start nrpe service after reboot on Linux host: ...
Steps to Install NRPE Plugins on Nagios Server.