GitHub Self Hosted Runners

Install and setup microk8s

sudo apt update
sudo apt install snapd --fix-missing
sudo snap install microk8s --classic --channel=1.28
sudo usermod -a -G microk8s $USER
sudo chown -f -R $USER ~/.kube
exit # relogin

Optional step for clustering

head node:

microk8s add-node
sudo ufw allow from <worker-ip> # repeat

worker nodes:

microk8s join <output of add-node>  --worker # rerun add-node for every new node
sudo ufw allow from <head-ip>

Starting the services

Contents of runnerdeployment.yml:

apiVersion: actions.summerwind.dev/v1alpha1
kind: RunnerDeployment
metadata:
  name: <name>
spec:
  replicas: 10
  template:
    spec:
      organization: <org>

microk8s enable dns

microk8s kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.12.0/cert-manager.yaml
# wait until everything is "running": microk8s kubectl get pods --all-namespaces -o wide

while ! microk8s kubectl apply -f https://github.com/actions/actions-runner-controller/releases/download/v0.27.5/actions-runner-controller.yaml --server-side; do sleep 1; done

microk8s kubectl create secret generic controller-manager -n actions-runner-system --from-literal=github_token=<TOKEN> # see: https://docs.github.com/en/actions/hosting-your-own-runners/managing-self-hosted-runners-with-actions-runner-controller/authenticating-to-the-github-api#authenticating-arc-with-a-github-app

while ! microk8s kubectl apply -f runnerdeployment.yml; do sleep 1; done