First of all, if you own a domain, the following text is for you. In production you obviously want to reduce outages. And an outage of a DNS domain as such takes down all services under that domain,...
Monitoring domains and DNSSEC properly
First of all, if you own a domain, the following text is for you. In production you obviously want to reduce outages. And an outage of a DNS domain as such takes down all services under that domain,...
Icinga for Windows without an Icinga 2 agent
I've already dropped a hint at this topic in a previous post of mine which reflected the history of Icinga on Windows: Icinga 2.14 will be able to directly speak to the PowerShell daemon REST API without even fork(2) or exec(3) for a subprocess (...). In fact this...
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 2 IRC notifications. The complete guide
A few months ago I wrote about sending notifications to Rocket.Chat. While that messaging tool is quite powerful, one may also prefer to keep it simple. So let's also address the good old IRC. No test system? No problem! Setting up an IRC daemon is pretty easy:...
Icinga 2 Rocket.Chat notifications. The complete guide
About one year ago the NETWAYS colleagues showed you how to let Icinga 2 notify users through XMPP/Jabber. Now it's time to also cover the somewhat more fancy Rocket.Chat. No Rocket.Chat? No problem! Setting up a test system is pretty easy: Clone this Git repository...
MySQL queries – faster than light (almost)
(The title image from NASA is available under the CC BY 2.0 license.) At the moment I'm working at a tool for migrating Icinga 2 IDO history to Icinga DB. Sure, one could also run IDO and Icinga DB in parallel for one year and then switch to Icinga DB if they only...
Icinga 2.12.5 + 2.11.10: Security Releases
Today we are releasing Icinga 2.12.5 and 2.11.10, including two security fixes that may lead to privilege escalation for authenticated API users. Depending on your setup, manual intervention beyond installing the new versions may be required, so please read the...
Bring your own CI/CD.
As a developer I couldn’t imagine working without one of these three things: a search engine – which saves me thinking by myself an IDE – which saves me typing function names completely and continuous integration – which saves me running unit tests by myself on every...
Docker: You’ve got mail!
So far we’ve chosen base images for our Icinga 2, Icinga Web 2 and Icinga DB Docker images, further reduced the image size and even taken care for security and comfort. Additionally Eric put all the images together via Docker Compose. But there’s still one little...
Docker: Secure, but comfortable images.
While developing Docker images for Icinga 2, Icinga Web 2 and Icinga DB we stumbled over OpenShift which doesn’t allow images to run as root by default. One has to enable that explicitly. Also admins of K8s environments being more permissive by default may decide not...
Docker: Do more with even less!
It's been some time since my last blog post about possible Docker base images and we've decided to use the empty base image for Icinga DB. As it's written in Go, the binary already contains all dependencies and building it with CGO_ENABLED=0 removes even the need of...
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