No More Expiration Emails – What Now SSL/TLS certificates are critical for secure communication, and keeping track of their expiration is essential. Until now, Let’s Encrypt has sent email...

Let’s Encrypt Stops Expiration Emails – How to Ensure Your Certificates Stay Valid with SSL Certificate Monitoring
No More Expiration Emails – What Now SSL/TLS certificates are critical for secure communication, and keeping track of their expiration is essential. Until now, Let’s Encrypt has sent email...

Turns any command into a plugin: check_rungrep
Imagine you have one more special thing to monitor. While our Icinga 2 can observe infrastructure of almost any size, it still needs a plugin for each kind of check. Unfortunately not every command meets the monitoring plugin API: exit code 0-3 (ok, warning, critical,...

Managing Multiple Service Instances with a Systemd Generator
When working with systemd services in Linux, you might encounter situations where multiple instances of a service need to be managed dynamically. When I had to develop a solution to monitor multiple Kubernetes clusters with Icinga for Kubernetes, I ran into exactly...
Unmasking SVG Injection: Behind the Scenes of Web Graphics
Have you ever admired those cool graphics on the web? They look nice but can be the wolf in sheep's clothing. In this post you will learn about SVG injections and how to avoid them. What is SVG? Before we get into the topic of SVG injection, let's understand SVG...
Icinga 2 API and debug console
Have you ever experienced configuration issues, such as notifications not being sent as expected or apply rules not matching all expected objects, probably due to an incorrectly set custom variable? Icinga 2 has several options to assist you in such situations. Last...
Introducing our new Roadmap Page
Hey there, fellow open-source enthusiasts! At Icinga, we've always been committed to transparency, community engagement, and continuous improvement. That's why we're excited to introduce a new page on our website that will provide you with insights into the future...
Server-Sent Events: An Overlooked Browser Feature
In an ever growing world of libraries, frameworks and content packagers, we tend to loose the focus on already available native technology, which comes shipped with tools that we use on a daily basis. One such feature goes by the name of Server-Sent Events and it has...
Security Updates for Icinga Director
Icinga has published a total of five updates yesterday for Icinga Director and one of its dependencies, the incubator module. Their main purpose is to fix two Cross-Site-Request-Forgery (CSRF) vulnerabilities. We treat them with a very high criticality and advice to...
Unleashing the Potential of SVGs: A Guide to Dynamic Visualization and Monitoring
Introduction In the dynamic realm of monitoring Kubernetes clusters, effective visualization is paramount for gaining insights into system health and performance. One versatile tool that has gained prominence in this domain is Scalable Vector Graphics (SVGs). In this...
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...
Releasing Icinga v2.14.2
Version 2.14.2 is a hotfix release for master nodes that mainly fixes excessive disk usage caused by the InfluxDB writers. Icinga 2.14.0 introduced a change to the InfluxDB Writer that resulted in InfluxDB storing the data less efficiently. This release restores the...
Icinga DB Web migration made easier
For users using monitoring module, migrating their custom dashboards, navigation items and permissions and restrictions to Icinga DB Web has been made easier with the recent Icinga DB Web release (v1.1.1) through its migrate command. Once Icinga DB Web has been...

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