The ability to log into all corporate applications with one username and password is pretty convenient, even compared to a password manager. As a benefit, the IT department can centrally enforce one...
Icinga Web SSO walkthrough
The ability to log into all corporate applications with one username and password is pretty convenient, even compared to a password manager. As a benefit, the IT department can centrally enforce one...
Consulting on Site: An Icinga Engagement near Basel
Not all monitoring work happens remotely. Some of it means packing a bag, taking the train across three countries, and sitting down with the customer's team. This is a report from a week-long Icinga consulting engagement for a customer near Basel, covering the journey...
Opsgenie End of Life: Where Open-Source Alerting Stands in 2026
Atlassian stops supporting Opsgenie on April 5, 2027. New sales ended on June 4, 2025, and data left in the platform after the support date gets deleted. If Icinga pushes alerts into Opsgenie today, that route has an expiry date, and so does every on-call rotation and...
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....
Two Factors, Double Security?
Introduction “Please enter the code we just sent you.” – most people have seen this message when logging into an online service. Two-Factor Authentication (2FA) is no longer reserved for banks or enterprises. It’s now common in email, social media, and shopping...
Releasing Icinga 2 v2.15.1, 2.14.7 and 2.13.13 and Icinga DB Web v1.2.3 and 1.1.4
Today, we are releasing security updates for Icinga 2 and Icinga DB Web fixing multiple security issues. Two of them allow authenticated API users to learn restricted information or crash Icinga 2. On Icinga 2, a third issue affecting the provided scripts allows a...
Nagios Alternatives: Why Icinga Is the Strongest Choice
Introduction Nagios has long been a trusted name in IT monitoring. Its plugin-based architecture and long-standing community have made it a stable choice for organizations of all sizes. However, IT infrastructures have changed dramatically in the last decade. With...
Enhanced Icinga 2 Container Images
As some of you might have already noticed, we recently gave our official Icinga 2 container image builds a complete overhaul. These new images are currently available only as snapshot builds but will replace the existing stable images with the next Icinga 2 v2.16.0...
How to check CPU usage on Linux
When your Linux system feels sluggish, one of the first things to investigate is the CPU usage. The CPU (Central Processing Unit) is the brain of your machine, and if it’s overloaded, everything else slows down. In this guide, you’ll learn different ways to Linux...
What is SNMP Trap: Real-Time Alerts for Network Monitoring
Why wait for the next poll? An SNMP trap is a real-time alert sent from a device to a monitoring system, without waiting for polling. Ever had a router die silently at 3 AM while your monitoring system was still polling away every 5 minutes? Yeah… not fun. That’s...
Who Uses Icinga? 30 Real-World Deployments from 500 to 50,000+ Hosts
Thirty organizations have documented their Icinga deployment with us on the record, with names, architecture and numbers. The published deployments cover finance, telecom, manufacturing, public services, research and managed services. They range from around 500 hosts...
Upgrade your monitoring lists with icon images
Recently I was importing an Icinga configuration for testing purposes. Working with this configuration, I found that there were icon images assigned to the objects. Sadly, those didn’t display, because I didn’t have the icon set installed. So I thought of creating my...
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