From the initial installation to the running monitoring stack:
Here you will find all instructions for the basic installation of Icinga.
Compact and practical.
Last updated: 05.03.2026 This blog post explains whether Icinga is free. As I sit here and start writing this blog post, I still can't believe that today is about this topic. Is Icinga free of charge? For me, as someone who has been involved with open source software for almost 25 years now (yes, I'm old!), this question seems strange and yet the topic is interesting. As obvious as the answer to this is for me, the figures, data and facts from the usual analytics tools are just as clear. The...
Last updated: August 5, 2026 · Reading time: 6–8 minutes Observability vs. Monitoring: Two terms that are constantly used interchangeably in everyday IT, but don't mean the same thing. We'll break down the etymology, cite the earliest known definition from 1959, and use OpenTelemetry and Graylog to demonstrate how these two concepts interact in practice. The term observability is on everyone's lips and is often touted as a modern solution to dusty old, static monitoring. All manufacturers...