Advent of Code 2023 – Day 4

We use Munin to monitor servers with different resources and critical operations. Munin will contact each server and ask for statistics and monitor if a service is running and have enough resources to work.

I started to use a lot of the paint functions in Java at work and I wanted to create an example that could teach me about the different shaders available in Java. The paint interface is not something you come across if you don’t draw things in Java but having an understanding of the possibilities…

Using openfaas and minikube we will create a function as a service on prem. Function as a service is available for larger kubernetes systems and can be deployed in the cloud but being able to test locally can be benificial.

After a critical failure, we look into resizing an OSD in our Ceph environment. Unfortunately, the drive is entire, so resize of the OSD was the only option to start the service.

I’m trying to solve all the Advent of Code puzzles in this video series.

In this video, we look into Ceph erasure coding. This is a feature where you can use more of the available space in your cluster without losing too much redundancy. It’s more complex and gives you the option to have more or less safety.