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Action Runner Controller

Following the Action Runner Controller documentation. See the quickstart guide here.

See the Makefile for a quick way to build and push the image to the GitHub Container Registry.

Prerequisite

You need a kubernetes cluster. You can use k3d or k3s.

Installing k3s

curl -sfL https://get.k3s.io | sh - --cluster-init

Installing k3s with a cluster using zerotier

curl -sfL https://get.k3s.io | sh -s - \
  --bind-address=0.0.0.0 \
  --flannel-iface=zt1234557 \
  --node-ip=10.0.0.2 \
  --cluster-init

Installing Action Runner Controller

NAMESPACE="arc-systems"
helm install arc \
    --namespace "${NAMESPACE}" \
    --create-namespace \
    oci://ghcr.io/actions/actions-runner-controller-charts/gha-runner-scale-set-controller
NAMESPACE="arc-systems"
helm upgrade --install arc \
    --namespace "${NAMESPACE}" \
    oci://ghcr.io/actions/actions-runner-controller-charts/gha-runner-scale-set-controller

Authentiate ARC with GitHub

Obtain a Github App ID, Installation ID and Private Key from the GitHub Apps page.

kubectl create namespace arc-runners # if it doesn't exist
kubectl create secret generic pre-defined-secret \
   --namespace=arc-runners \
   --from-literal=github_app_id=123456 \
   --from-literal=github_app_installation_id=654321 \
   --from-literal=github_app_private_key='-----BEGIN RSA PRIVATE KEY-----********'

Installing Action Runner Set

INSTALLATION_NAME="arc-runner-set"
NAMESPACE="arc-runners"
helm install "${INSTALLATION_NAME}" \
    --namespace "${NAMESPACE}" \
    --create-namespace \
    -f ./runner-scale-set-values.yaml \
    oci://ghcr.io/actions/actions-runner-controller-charts/gha-runner-scale-set

To change or upgrade the installation, you can use the following command:

INSTALLATION_NAME="arc-runner-set"
NAMESPACE="arc-runners"
helm upgrade --install "${INSTALLATION_NAME}" \
    --namespace "${NAMESPACE}" \
    --values ./runner-scale-set-values.yaml \
    oci://ghcr.io/actions/actions-runner-controller-charts/gha-runner-scale-set

Tip

You likely need to upgrade both the controller and the runner set to use the latest version of the runner.