Jordi

Mozcode

Software development, architecture, tips and crazy ideas

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Introduction

Recently, I've been thinking about improving my Kubernetes (K8s) Raspberry Pi cluster to  something more resilient than just a one K8s master cluster which can fail easily and ruin all your work of months on it.
I installed multiple times on-premise single master K8s clusters based on Redhat ecosystem ( Centos/Fedora). The difficulty of doing this manually if it's your first time it's far from easy, and if you want to install something closer to an on premises HA K8s cluster manually it becomes a quite uncomfortable task.
So the challenge was to find a simple way to install a multi-master K8s cluster using my new 10 raspberry Pi 4 (4Gb Ram) project. 

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Months ago I decided to build a Raspberry pi 4 cluster to try some distributed software projects on it. The main goal was to build it in a compact way and as cheap as possible. Planning all hardware buying is not a 5 minutes task so I thought about writing a short post.

This post tries to save you time if you're looking for something similar pointing what and where to buy all the stuff required and have your Raspberry 4 cluster ready to mount.

I bought all the pieces mainly in two places EBay and AliExpress. Obviously it took two weeks to have all these pieces together after they came from UK and China.


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