Icinga 2.14 introduced a new feature that allows to better model complex dependencies between your hosts and services: redundancy groups. Let's take an e-mail server as an example. In order to...
Dependency Redundancy Groups in Icinga 2.14
Icinga 2.14 introduced a new feature that allows to better model complex dependencies between your hosts and services: redundancy groups. Let's take an e-mail server as an example. In order to...
Releasing Icinga 2.14 and 2.13.8
We are happy to announce the release of Icinga 2.14.0 and 2.13.8 today. Especially the 2.14.0 release comes with a lot of fixes and improvements and this blog post will highlight the most important ones. There are some breaking changes in 2.14.0, so please make sure...
The Tale of a Single Lock in Icinga 2
To speed up startup and reload times of Icinga 2, we have already put a lot of effort into improving the configuration load performance and still continue to do so for the next major release. In this blog post, I will share the story of one particular issue we found,...
Automatically Testing Icinga DB
In today's blog post, I want to present something related to Icinga DB that you most likely will not come in touch with as a regular user: some of the test cases we built for Icinga DB and the tooling created to support them. The Challenge Even though Icinga DB is a...
Installing Additional Modules in the Icinga Web 2 Docker Container
The Docker images we provide for both Icinga 2 and Icinga Web 2 already contain quite a number of modules. For example, the Icinga Web 2 image contains all the Web modules developed by us. But one of the main benefits of Icinga is extensibility, so you might want to...
Our Workflow for Security Releases using GitHub Security Advisories
We recently started using GitHub Security Advisories as part of our workflow for pushing out security releases. This post will give a brief introduction on how they work, how we use them, some of their limitations, and how we overcome them. We are still experimenting...
Releasing Icinga 2.11.9 + 2.12.4: Crash Fixes and Reliability Improvements
Versions 2.11.9 and 2.12.4 are maintenance releases that fix some crashes, improve error handling and add compatibility for systems coming with newer Boost versions. Bugfixes Fix a crash when notification objects are deleted using the API #8782 (2.11.9: #8780) Fix...
Debugging Filters and Apply Rules using the Script Debugger
Have you ever been in a situation where something in your Icinga configuration did not work as expected and you ended up doing small changes and reloading Icinga over and over again? This can be especially tricky with apply rules and filters if they don't match the...
Icinga 2 Config Sync: DIY Edition
Two weeks ago, Icinga 2 Config Sync: Behind the Scenes explained how the config sync in Icinga 2 works and how you can look behind the scenes. Today, we will put our knowledge from that post to the test and try to manually replicate the config sync. The most important...
Icinga 2 Config Sync: Behind the Scenes
Today's blog post dives into the internals of Icinga 2 and will give you an overview how the config synchronization works internally. We will take a small cluster as an example and follow the configuration files through the synchronization mechanism. We assume some...
Releasing Icinga 2.11.7 + 2.12.2: Cluster Stability Improvements
Today we are releasing the 2.11.7 and 2.12.2 bugfix releases. In both of these, a number of issues regarding the reliability of the cluster functionality are addressed. Bugfixes Fix a connection leak with misconfigured agents #8483 (2.11.7: #8482) Properly sync...
Releasing Icinga 2.12.1 + 2.11.6
Today we are releasing the 2.12.1 and 2.11.6 bugfix releases. These versions fix several crashes, deadlocks and excessive check latencies. They also address several bugs regarding IDO, API, notifications and checks. 2.12.1 Core Fix crashes during config...
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