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Adding ARC runners to a repository, organization, or enterprise

Warning

This documentation covers the legacy mode of ARC (resources in the actions.summerwind.net namespace). If you're looking for documentation on the newer autoscaling runner scale sets, it is available in GitHub Docs. To understand why these resources are considered legacy (and the benefits of using the newer autoscaling runner scale sets), read this discussion (#2775).

Usage

GitHub self-hosted runners can be deployed at various levels in a management hierarchy:

  • The repository level
  • The organization level
  • The enterprise level

Runners can be deployed as 1 of 2 abstractions:

  • A RunnerDeployment (similar to k8s's Deployments, based on Pods)
  • A RunnerSet (based on k8s's StatefulSets)

We go into details about the differences between the 2 later, initially lets look at how to deploy a basic RunnerDeployment at the 3 possible management hierarchies.

Adding runners to a repository

To launch a single self-hosted runner, you need to create a manifest file that includes a RunnerDeployment resource as follows. This example launches a self-hosted runner with name example-runnerdeploy for the actions/actions-runner-controller repository.

# runnerdeployment.yaml
apiVersion: actions.summerwind.dev/v1alpha1
kind: RunnerDeployment
metadata:
  name: example-runnerdeploy
spec:
  replicas: 1
  template:
    spec:
      repository: mumoshu/actions-runner-controller-ci

Apply the created manifest file to your Kubernetes.

$ kubectl apply -f runnerdeployment.yaml
runnerdeployment.actions.summerwind.dev/example-runnerdeploy created

You can see that 1 runner and its underlying pod has been created as specified by replicas: 1 attribute:

$ kubectl get runners
NAME                             REPOSITORY                             STATUS
example-runnerdeploy2475h595fr   mumoshu/actions-runner-controller-ci   Running

$ kubectl get pods
NAME                           READY   STATUS    RESTARTS   AGE
example-runnerdeploy2475ht2qbr 2/2     Running   0          1m

The runner you created has been registered directly to the defined repository, you should be able to see it in the settings of the repository.

Now you can use your self-hosted runner. See the official documentation on how to run a job with it.

Adding runners to an organization

To add the runner to an organization, you only need to replace the repository field with organization, so the runner will register itself to the organization.

apiVersion: actions.summerwind.dev/v1alpha1
kind: RunnerDeployment
metadata:
  name: example-runnerdeploy
spec:
  replicas: 1
  template:
    spec:
      organization: your-organization-name

Now you can see the runner on the organization level (if you have organization owner permissions).

Adding runners to an enterprise

To add the runner to an enterprise, you only need to replace the repository field with enterprise, so the runner will register itself to the enterprise.

apiVersion: actions.summerwind.dev/v1alpha1
kind: RunnerDeployment
metadata:
  name: example-runnerdeploy
spec:
  replicas: 1
  template:
    spec:
      enterprise: your-enterprise-name

Now you can see the runner on the enterprise level (if you have enterprise access permissions).