152 lines
6.3 KiB
Markdown
152 lines
6.3 KiB
Markdown
# Actions Runner Controller Quickstart
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GitHub Actions automates the deployment of code to different environments, including production. The environments contain the `GitHub Runner` software which executes the automation. `GitHub Runner` can be run in GitHub-hosted cloud or self-hosted environments. Self-hosted environments offer more control of hardware, operating system, and software tools. They can be run on physical machines, virtual machines, or in a container. Containerized environments are lightweight, loosely coupled, highly efficient and can be managed centrally. However, they are not straightforward to use.
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`Actions Runner Controller (ARC)` makes it simpler to run self hosted environments on Kubernetes(K8s) cluster.
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With ARC you can :
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- **Deploy self hosted runners on Kubernetes cluster** with a simple set of commands.
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- **Auto scale runners** based on demand.
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- **Setup across GitHub editions** including GitHub Enterprise editions and GitHub Enterprise Cloud.
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## Overview
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For an overview of ARC, please refer to "[About ARC](https://github.com/actions/actions-runner-controller/blob/master/docs/about-arc.md)."
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## Getting Started
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ARC can be setup with just a few steps.
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In this section we will setup prerequisites, deploy ARC into a K8s cluster, and then run GitHub Action workflows on that cluster.
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### Prerequisites
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<details><summary><sub>Create a K8s cluster, if not available.</sub></summary>
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<sub>
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If you don't have a K8s cluster, you can install a local environment using minikube. For more information, see <a href="https://minikube.sigs.k8s.io/docs/start/">"Installing minikube."</a>
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</sub>
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</details>
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:one: Install cert-manager in your cluster. For more information, see "[cert-manager](https://cert-manager.io/docs/installation/)."
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```shell
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kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.8.2/cert-manager.yaml
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```
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<sub> *note:- This command uses v1.8.2. Please replace with a later version, if available.</sub>
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>You may also install cert-manager using Helm. For instructions, see "[Installing with Helm](https://cert-manager.io/docs/installation/helm/#installing-with-helm)."
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:two: Next, Generate a Personal Access Token (PAT) for ARC to authenticate with GitHub.
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- Login to your GitHub account and Navigate to "[Create new Token](https://github.com/settings/tokens/new)."
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- Select **repo**.
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- Click **Generate Token** and then copy the token locally ( we’ll need it later).
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### Deploy and Configure ARC
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1️⃣ Deploy and configure ARC on your K8s cluster. You may use Helm or Kubectl.
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<details><summary>Helm deployment</summary>
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##### Add repository
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```shell
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helm repo add actions-runner-controller https://actions-runner-controller.github.io/actions-runner-controller
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```
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##### Install Helm chart
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```shell
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helm upgrade --install --namespace actions-runner-system --create-namespace\
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--set=authSecret.create=true\
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--set=authSecret.github_token="REPLACE_YOUR_TOKEN_HERE"\
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--wait actions-runner-controller actions/actions-runner-controller
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```
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<sub> *note:- Replace REPLACE_YOUR_TOKEN_HERE with your PAT that was generated previously. </sub>
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</details>
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<details><summary>Kubectl deployment</summary>
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##### Deploy ARC
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```shell
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kubectl apply -f \
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https://github.com/actions/actions-runner-controller/\
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releases/download/v0.22.0/actions-runner-controller.yaml
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```
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<sub> *note:- Replace "v0.22.0" with the version you wish to deploy </sub>
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##### Configure Personal Access Token
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```shell
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kubectl create secret generic controller-manager \
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-n actions-runner-system \
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--from-literal=github_token=REPLACE_YOUR_TOKEN_HERE
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````
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<sub> *note:- Replace REPLACE_YOUR_TOKEN_HERE with your PAT that was generated previously.</sub>
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</details>
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2️⃣ Create the GitHub self hosted runners and configure to run against your repository.
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Create a `runnerdeployment.yaml` file and copy the following YAML contents into it:
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```yaml
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apiVersion: actions.summerwind.dev/v1alpha1
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kind: RunnerDeployment
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metadata:
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name: example-runnerdeploy
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spec:
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replicas: 1
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template:
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spec:
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repository: mumoshu/actions-runner-controller-ci
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````
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<sub> *note:- Replace "mumoshu/actions-runner-controller-ci" with your repository name. </sub>
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Apply this file to your K8s cluster.
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```shell
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kubectl apply -f runnerdeployment.yaml
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````
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*🎉 We are done - now we should have self hosted runners running in K8s configured to your repository. 🎉*
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Next - lets verify our setup and execute some workflows.
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### Verify and Execute Workflows
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:one: Verify that your setup is successful:
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```shell
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$ kubectl get runners
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NAME REPOSITORY STATUS
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example-runnerdeploy2475h595fr mumoshu/actions-runner-controller-ci Running
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$ kubectl get pods
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NAME READY STATUS RESTARTS AGE
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example-runnerdeploy2475ht2qbr 2/2 Running 0 1m
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````
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Also, this runner has been registered directly to the specified repository, you can see it in repository settings. For more information, see "[Checking the status of a self-hosted runner - GitHub Docs](https://docs.github.com/en/actions/hosting-your-own-runners/monitoring-and-troubleshooting-self-hosted-runners#checking-the-status-of-a-self-hosted-runner)."
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:two: You are ready to execute workflows against this self-hosted runner. For more information, see "[Using self-hosted runners in a workflow - GitHub Docs](https://docs.github.com/en/actions/hosting-your-own-runners/using-self-hosted-runners-in-a-workflow#using-self-hosted-runners-in-a-workflow)."
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There is also a quick start guide to get started on Actions, For more information, please refer to "[Quick start Guide to GitHub Actions](https://docs.github.com/en/actions/quickstart)."
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## Learn more
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For more detailed documentation, please refer to "[Actions Runner Controller Documentation](https://github.com/actions/actions-runner-controller/blob/master/README.md#documentation)."
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## Contributing
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We welcome contributions from the community. For more details on contributing to the project (including requirements), please refer to "[Getting Started with Contributing](https://github.com/actions/actions-runner-controller/blob/master/CONTRIBUTING.md)."
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## Troubleshooting
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We are very happy to help you with any issues you have. Please refer to the "[Troubleshooting](https://github.com/actions/actions-runner-controller/blob/master/TROUBLESHOOTING.md)" section for common issues.
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