Icinga2 - The definitive guide to monitoring

Explore how to build a monitoring environment, follow markdown tutorials linked in a public GitHub proposal, and compare resource monitoring across engine, web interface, and Windows platforms.

Install and configure the Icinga engine, including repository setup, base packages, and plugins for remote checks; enable features, secure with SELinux, and set up MariaDB for monitoring.

Install and configure the icinga2 web ui to manage monitoring instances via a browser, install dependencies, set up apache, start services, configure the firewall, and generate a setup token.

Learn how Icinga2 uses configuration files to shape engine and web UI behavior, locate global and login settings, explore modules and features, and apply restart and troubleshooting steps.

Set up and add monitored hosts in Icinga2 by editing hosts configurations, ensuring name resolution, and defining host objects with addresses and OS, then configure basic services and restart Icinga2.

Explore the Icinga2 API that lets you query, modify, and configure the engine through authenticated http requests, returning json data and supporting get, post, put, and delete for automation.

Scale your icinga2 deployment by building a master–satellite hierarchy across cloud environments and data centers, using zones and endpoints to enable distributed monitoring.

Explore the icinga2 plugin ecosystem via Icinga Exchange to install and enable modules. Clone plugin repositories to the correct directories and configure paths for the monitoring engine and web interface.

Set up the icinga2 directory as the primary configuration tool by provisioning a UTF-8 database, configuring resources, and enabling modules for management and API access.

Create a user for the daemon, install package, copy the service definition to the system, configure environment and config files, then restart, reload, enable, and start the service; check status.

Import host groups and hosts from the core API into Icinga via automation, set merge and purge sync rules, and run sync and import to reflect changes.

Learn to configure an agent-based Icinga2 monitoring setup: install the Icinga agent on a Linux node, generate a ticket, and register the host with disk checks in the web UI.

Install the Icinga2 Windows agent on Windows Server 2019, run the setup wizard with the token, configure the master, and verify the new host in the web interface.

Wrap up this definitive monitoring guide by recapping Icinga foundations, plugin installation, and agent-based deployment, while inviting feedback and directing readers to the course GitHub and LinkedIn.