When hosting in a secure or corporate environment, Internet access is often restricted or blocked completely. While this makes sense from a security point of view, this introduces some challenges....
Mirroring Icinga Packages in Air-Gapped and Restricted Environments
When hosting in a secure or corporate environment, Internet access is often restricted or blocked completely. While this makes sense from a security point of view, this introduces some challenges....
How to Use Git Bisect to Pinpoint Bugs Precisely
A feature that used to work suddenly broke. The problem? There were 300 commits since the last time I knew it worked. Checking each commit manually would take forever. Fortunately, Git has a tool designed exactly for this situation: git bisect. What is Git Bisect? The...
Syncing LDAP Users & Groups with the Icinga Notifications Web API
If you're running Icinga in a mid-to-large organization, chances are your users and teams are already defined in LDAP or Active Directory. Manually re-creating contacts and contact groups in Icinga Notifications Web is tedious and error-prone, but thankfully, it...
How to undo Git reset hard?
You just finished a long interactive rebase. You hit enter. Your commit history looks… wrong. There is a bunch of things that could go wrong: messed up an interactive rebase accidentally ran git reset --hard merged the wrong branch rebased onto the wrong base You...
Understanding Namespaces in Icinga 2 DSL
Last time, we explored the concept of variable scopes in Icinga 2, which help you manage and organize your DSL configurations effectively. As promised, today we'll dive into another, how shall I say, advanced topic: Namespaces in Icinga 2. What are Namespaces?...
Integrating Prometheus Metrics into Icinga Using check_prometheus
Introduction This article explains how to integrate metrics from Prometheus into Icinga checks using the check_prometheus plugin. There can be multiple reasons why this could be desired: Maybe you have different teams with their own monitoring systems, and you need to...
Testing Icinga in a Homelab Setup With Nextcloud
If you want to get started with Icinga but don’t have a data center lying around, no worries. Icinga is a lightweight monitoring tool that works for both large infrastructures and small home labs. When I first explored Icinga during my first year as an apprentice, it...
Exploring C++20 Coroutines: A Practical Look at Stackless Coroutines vs Boost.Coroutine2
Introduction Icinga 2 makes heavy use of Boost.Coroutine2 in our network code, which are stackful coroutines that are designed to work well with the IO operations from Boost.Asio. This has proven to be a challenge whenever we wanted to asynchronously await things...
Monitor One Icinga 2 Cluster From Another
Icinga is designed to be a highly dynamic monitoring software that can monitor your setup, regardless of its architecture. While most setups are hierarchical and fit well into the master, satellites, and agents scheme with different zones, it is sometimes impractical...
Drowning in Alert Fatigue? How to Regain Control of Your Monitoring
Introduction: Why Alert Fatigue Hits Sysadmins Sooner or Later If you’ve ever muted your phone during a maintenance window, only to miss a real outage an hour later, you’re not alone. Sysadmins on Reddit and beyond often describe feeling like they’re drowning in...
Ipl-html: Introducing new Form Element Decorators
A Fresh Take on Form Element Decorators Decorators have always been a powerful concept in Icinga Web’s form system — letting developers control how form elements are displayed without hardcoding markup everywhere. But until recently, the decorator system had its...
Using Icinga 2 on NixOS
I use NixOS by the way. And today I'm going to show you how to operate a simple Icinga setup using that operating system. I.e. a single node with checks and notifications. In contrast to Icinga Web 2 or Redis, NixOS provides an Icinga 2 package, but no module....
Subscribe to our Newsletter
A monthly digest of the latest Icinga news, releases, articles and community topics.
