Raspberry Pi Cluster Configuration

This is the my raspberry pi cluster GitOps configuration

Dir structure

├── argo/
├── ├──example_cluster/
│   │  ├── bootstrap/
│   │  ├── infrastructure/
│   │  └── apps/
├── ansible/
│   ├── common.yaml
│   ├── k3s.yaml
│   ├── group_vars
│   │   ├── nodes.yaml
│   │   └── maters.yaml
│   ├── host_vars
│       └── node01.yaml
└── bootstrap/
    ├── firstboot.sh
    └── bootstrap.env # os bootstrap service config example

OS bootstrap

The node can use a RPB OS with a post install hook to pre-configure the OS.

bootstrap.env will tell the service what hostname should be configured for the node and the public keys for ssh.

Add the raspberian with firstboot to the sd card and copy the files in os_bootstrap to the sd's boot directory.

• rpi-imager

brew install raspberry-pi-imager

Initial setup

Ansible is responsible for the initial setup of the k3s cluster:

make ansible

ArgoCD

Argo is responsible for the k3s configurations. See more here.

Using sealed secret

Create the secret locally than encrypt it using the kubeseal cli. Example:

kubeseal --namespace metallb-system < metallb.json > sealed-metallb.json

License