When writing a custom check plugin for Icinga 2, there are situations where in addition to observing the current state of a system, taking the past into account as well can be helpful. A common case...
Making Use of Previous State in Icinga2 Check Commands
When writing a custom check plugin for Icinga 2, there are situations where in addition to observing the current state of a system, taking the past into account as well can be helpful. A common case...
Analyzing configuration problems with Icinga 2
Today, I want to showcase an old, but still very useful, tool when it comes to analyzing and debugging an Icinga 2 configuration: the icinga2 object list command. It can be helpful in a variety of situations, for example when you want to verify that a config change...
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 deliver outgoing messages, it has to look up the addresses of the...
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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