DocOps by Johannes Hölzel

Today I found myself with a slow unresponsive zsh console session in certain folders and I spent some time figuring out why. What happen was that every input to my console took like 20 seconds to finish and it was having an impact on my work. It was driving me mad, I rebuild my dev container, rebooted to no avail until I realized: the size of t... Read More

Hey guys today is more a short rant than anything but my goal was to configure Opsgenie for a Prometheus deployment through Alertmanager. All that sounds easy and quick to do especially when you red tutorials like: https://kb.vshn.ch/vshnsyn/how-tos/opsgenie.html Or look on github https://github.com/Prometheus/Alertmanager/issues/1565 or ev... Read More

I just run into a problem with a client and I thought I would like to share. The task was to find out, why the storage of an ec2 instance had been bloated and was running out of storage. I had already deleted their temp files and other files that were not needed but there was still so much wasted space. Here is a quick way to measure what kind ... Read More

Often I see myself confronted with the problem of customizing a set of yaml files from a third party. Helm solves this problem with its Chart integration and allows rich modification of the underlying yaml through the definition of values. While I like helm, sometimes I really need an easier way to set up something and really do not want to both... Read More

I was facing a problem in a kubernetes cluster recently where everything was setup using external-dns, cloudflare and traefik. The Issue I was facing was is that by default external-dns only assigns ipv4 addresses to your ingresses and therefore makes ipv6 routing hard. After quite some research I found, that the default external-dns is actively... Read More