Configure Nagios Email Notification Using Gmail

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Nagios can be configured to sent out alerts on the state of the host or host service being monitored via email. This guide will therefore take you through how to Configure Nagios Email Notification using Gmail. The current state of a service or host being monitored is determined by the status of the service or host which can be OK,...
Try this 5 Minute Guided Meditation
Try this 5 Minute Guided Meditation

Install Nagios Core on Debian 10 Buster

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In this guide, we are going to learn how to install Nagios Core on Debian 10 Buster from the source. Nagios is an opensource tool that provides an enterprise-class central monitoring engine for IT monitoring, network monitoring, server and applications monitoring. It also provides a web interface for viewing current status, historical logs, and basic reports. Install Nagios Core on...

Install Nagios Server on CentOS 8

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In this guide, you will learn how to install Nagios Server on CentOS 8. Nagios provides enterprise-class Open Source IT monitoring, network monitoring, server and applications monitoring. Install Nagios Server on CentOS 8 To install Nagios Server on CentOS 8, follow through the steps below; Run System Update Resynchronize your system packages to their latest versions. dnf update Install Required Build Tools In this guide, we are...

Install Nagios Plugins on CentOS 8

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Install Nagios Plugins From Source RHEL/CentOS/Oracle Linux
This guide will walk you through how to install Nagios Plugins on CentOS 8. Nagios plugins are standalone extensions to Nagios Core that enables Nagios to monitor databases, operating systems, services, applications, network equipment, protocols etc. To use Nagios Plugins, you need to have installed and Setup Nagios Core server. Follow the link below to install Nagios server on CentOS 8. Install Nagios...

Install Nagios NRPE Agents on Debian 11/Debian 10

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This guide describes how to easily install Nagios NRPE agents on Debian 11/Debian 10. If you want to monitor your Debian hosts using Nagios server, then you need to have the NRPE agents installed on these hosts. Nagios Remote Plugin Executor (NRPE) allows you to remotely execute Nagios plugins on other Linux/Unix machines to query machine metrics such as...

Monitor SSL/TLS Certificates Expiry with Nagios

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Well, assuming you understand the implications of the expired SSL/TLS certificates, let us go through how to monitor SSL/TLS Certificates Expiry with Nagios. Nagios provides SSL Certificate monitoring and alerting when SSL certificates expiration date draws closer using the Nagios Plugins. Before you can proceed, install and setup Nagios server. Follow the links below to setup Nagios server on your...

Install Nagios Plugins and NRPE agents on CentOS 7/RHEL 7/Fedora 29

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Install Nagios Plugins From Source RHEL/CentOS/Oracle Linux
In this article, we are going to learn how to install Nagios Plugins and NRPE agents on CentOS 7/RHEL 7/Fedora 29 server using a package manager. You can install them from the source in case the server has no internet connections. This method however may results in the dependency issues. In our previous tutorials, we learnt how to install Nagios...

Install and Setup Nagios Core on Ubuntu 20.04

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Install and Setup Nagios
In this guide, we will provide a step-by-step tutorial on how to install and setup Nagios Core on Ubuntu 20.04. Nagios, now known as, Nagios Core, is an enterprise-class Open Source IT monitoring, network monitoring, server and applications monitoring solution. Install and Setup Nagios Core on Ubuntu 20.04 There are two ways in which you can install Nagios on Ubuntu 20.04. Install...

Nagios SNMP Monitoring of Linux Hosts on AlienVault USM/OSSIM

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Nagios SNMP Monitoring of Linux Hosts
In this guide, we are going to learn how to configure Nagios SNMP monitoring of Linux hosts. We will be using AlienVault USM/OSSIM as our Nagios server. Just like we have stated in our previous articles, AlienVault uses Nagios by default for monitoring hosts. In order to monitor hosts, you can use the agent-based or agentless method. Agent-based method involves...

Install Nagios Plugins on Rocky Linux 8

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This guide will walk you through how to install Nagios Plugins on Rocky Linux 8. Nagios plugins are standalone extensions to Nagios Core that enables Nagios to monitor databases, operating systems, services, applications, network equipment, protocols etc. To use Nagios Plugins, you need to have installed and Setup Nagios Core server. Follow the link below to install Nagios server on Rocky Linux...