Nagios

Nagios, now known as, Nagios Core, is an enterprise-class Open Source IT monitoring, network monitoring, server and applications monitoring solution. In this guide, we will provide a step-by-step tutorial on how to install and setup Nagios Core on Ubuntu 20.04 Some of the Nagios' features include: Monitoring of network services (via TCP port, SMTP, POP3, HTTP, NNTP,PING, etc.)Provides plugin interface to...

Follow through this guide to learn how to install Nagios NRPE agent on CentOS 8. In order to execute Nagios plugins that monitors various system services and metrics on a remote host, you need to install Nagios Remote Plugin Executor (NRPE). Install Nagios NRPE Agent on CentOS 8 Nagios NRPE agents can be installed from the EPEL repos directly using the...

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...

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,...

Well, in order to monitor your remote hosts with Nagios server for availability and metric checks, you need to add them hosts to the Nagios server. In this guide, we are going to learn how to add hosts to Nagios Server for monitoring. Before you can proceed, ensure that your Nagios is up and running; Install Nagios Server on CentOS 8 Install...

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...

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...

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...

Welcome to our tutorial on how to monitor Linux Hosts using Nagios check_by_ssh plugin. This enables Nagios Server to monitor system metrics and services on remote Linux server using SSH. We have covered various guides on Nagios Monitoring in our previous articles; Nagios SNMP Monitoring of Linux Hosts on AlienVault USM/OSSIM How to Install Nagios Plugins and NRPE agents...

Welcome to our tutorial on how to configure SNMP version 2c on Debian 9. If you are looking at monitoring your Debian servers via SNMP with tools like Nagios, Cacti etc, then you need to configure SNMP. In that case, you are at the right place. In our previous articles discusses configuration of SNMP on Ubuntu 18.04 and CentOS...