create-azure-self-hosted-runners #136
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name: create-azure-self-hosted-runners | |
on: | |
workflow_dispatch: | |
inputs: | |
runner_scope: | |
type: choice | |
required: true | |
description: Scope of the runner. On personal accounts, only "repo-level" works | |
options: | |
- org-level | |
- repo-level | |
default: repo-level | |
runner_org: | |
type: string | |
required: false | |
description: Organization or personal account to deploy the runner to (defaults to the repository owner) | |
runner_repo: | |
type: string | |
required: false | |
description: Repo to deploy the runner to. Only needed if runner_scope is set to "repo-level" (defaults to current repository) | |
deallocate_immediately: | |
type: string | |
required: true | |
description: Deallocate the runner immediately after creating it (useful for spinning up runners preemptively) | |
default: false | |
env: | |
ACTIONS_RUNNER_SCOPE: ${{ github.event.inputs.runner_scope }} | |
ACTIONS_RUNNER_ORG: "${{ github.event.inputs.runner_org || github.repository_owner }}" | |
ACTIONS_RUNNER_REPO: "${{ github.event.inputs.runner_repo || github.event.repository.name }}" | |
DEALLOCATE_IMMEDIATELY: ${{ github.event.inputs.deallocate_immediately }} | |
# This has to be a public URL that the VM can access after creation | |
POST_DEPLOYMENT_SCRIPT_URL: https://raw.githubusercontent.com/${{ github.repository }}/${{ github.ref }}/azure-self-hosted-runners/post-deployment-script.ps1 | |
# Note that you'll need "p" (arm64 processor) and ideally "d" (local temp disk). The number 4 stands for 4 CPU-cores. | |
# For a convenient overview of all arm64 VM types, see e.g. https://azureprice.net/?_cpuArchitecture=Arm64 | |
AZURE_VM_TYPE: Standard_D4plds_v5 | |
# At the time of writing, "eastus", "eastus2" and "westus2" were among the cheapest region for the VM type we're using. | |
# For more information, see https://learn.microsoft.com/en-us/azure/virtual-machines/dplsv5-dpldsv5-series (which | |
# unfortunately does not have more information about price by region) | |
AZURE_VM_REGION: westus2 | |
# The following secrets are required for this workflow to run: | |
# AZURE_CREDENTIALS - Credentials for the Azure CLI. It's recommended to set up a resource | |
# group specifically for self-hosted Actions Runners. | |
# az ad sp create-for-rbac --name "{YOUR_DESCRIPTIVE_NAME_HERE}" --role contributor \ | |
# --scopes /subscriptions/{SUBSCRIPTION_ID_HERE}/resourceGroups/{RESOURCE_GROUP_HERE} \ | |
# --sdk-auth | |
# AZURE_RESOURCE_GROUP - Resource group to create the runner(s) in | |
# AZURE_VM_USERNAME - Username of the VM so you can RDP into it | |
# AZURE_VM_PASSWORD - Password of the VM so you can RDP into it | |
jobs: | |
create-runner: | |
runs-on: ubuntu-latest | |
outputs: | |
vm_name: ${{ steps.generate-vm-name.outputs.vm_name }} | |
steps: | |
- name: Generate VM name | |
id: generate-vm-name | |
run: | | |
VM_NAME="actions-runner-$(date +%Y%m%d%H%M%S%N)" | |
echo "Will be using $VM_NAME as the VM name" | |
echo "vm_name=$VM_NAME" >> $GITHUB_OUTPUT | |
- uses: actions/checkout@v3 | |
- name: Obtain installation token | |
id: setup | |
uses: actions/github-script@v6 | |
with: | |
script: | | |
const appId = ${{ secrets.GH_APP_ID }} | |
const privateKey = `${{ secrets.GH_APP_PRIVATE_KEY }}` | |
const getAppInstallationId = require('./get-app-installation-id') | |
const installationId = await getAppInstallationId( | |
console, | |
appId, | |
privateKey, | |
process.env.ACTIONS_RUNNER_ORG, | |
process.env.ACTIONS_RUNNER_REPO | |
) | |
const getInstallationAccessToken = require('./get-installation-access-token') | |
const { token: accessToken } = await getInstallationAccessToken( | |
console, | |
appId, | |
privateKey, | |
installationId | |
) | |
core.setSecret(accessToken) | |
core.setOutput('token', accessToken) | |
# We can't use the octokit/request-action as we can't properly mask the runner token with it | |
# https://github.com/actions/runner/issues/475 | |
- name: Generate Actions Runner token and registration URL | |
run: | | |
case "$ACTIONS_RUNNER_SCOPE" in | |
"org-level") | |
ACTIONS_API_URL="https://api.github.com/repos/$ACTIONS_RUNNER_ORG/actions/runners/registration-token" | |
ACTIONS_RUNNER_REGISTRATION_URL="https://github.com/$ACTIONS_RUNNER_ORG" | |
;; | |
"repo-level") | |
ACTIONS_API_URL="https://api.github.com/repos/$ACTIONS_RUNNER_ORG/$ACTIONS_RUNNER_REPO/actions/runners/registration-token" | |
ACTIONS_RUNNER_REGISTRATION_URL="https://github.com/$ACTIONS_RUNNER_ORG/$ACTIONS_RUNNER_REPO" | |
;; | |
*) | |
echo "Unsupported runner scope: $ACTIONS_RUNNER_SCOPE" | |
exit 1 | |
;; | |
esac | |
ACTIONS_RUNNER_TOKEN=$(curl \ | |
-X POST \ | |
-H "Accept: application/vnd.github+json" \ | |
-H "Authorization: Bearer ${{ steps.setup.outputs.token }}"\ | |
-H "X-GitHub-Api-Version: 2022-11-28" \ | |
$ACTIONS_API_URL \ | |
| jq --raw-output .token) | |
echo "::add-mask::$ACTIONS_RUNNER_TOKEN" | |
# The Azure VM type we use has blazing-fast local, temporary storage available as the D:\ drive. | |
# The only downside is that, after dellocation, the contents of this disk (including the Actions Runner), | |
# are destroyed. Let's only use it when we don't immediately deallocate the VM. | |
if [[ "$DEALLOCATE_IMMEDIATELY" == "true" ]]; then | |
ACTIONS_RUNNER_PATH="C:\a" | |
else | |
ACTIONS_RUNNER_PATH="D:\a" | |
fi | |
AZURE_ARM_PARAMETERS=$(tr '\n' ' ' <<-END | |
githubActionsRunnerRegistrationUrl="$ACTIONS_RUNNER_REGISTRATION_URL" | |
githubActionsRunnerToken="$ACTIONS_RUNNER_TOKEN" | |
postDeploymentPsScriptUrl="$POST_DEPLOYMENT_SCRIPT_URL" | |
virtualMachineName="${{ steps.generate-vm-name.outputs.vm_name }}" | |
virtualMachineSize="$AZURE_VM_TYPE" | |
publicIpAddressName1="${{ steps.generate-vm-name.outputs.vm_name }}-ip" | |
adminUsername="${{ secrets.AZURE_VM_USERNAME }}" | |
adminPassword="${{ secrets.AZURE_VM_PASSWORD }}" | |
stopService="$DEALLOCATE_IMMEDIATELY" | |
githubActionsRunnerPath="$ACTIONS_RUNNER_PATH" | |
location="$AZURE_VM_REGION" | |
END | |
) | |
echo "AZURE_ARM_PARAMETERS=$AZURE_ARM_PARAMETERS" >> $GITHUB_ENV | |
- name: Azure Login | |
uses: azure/login@v1 | |
with: | |
creds: ${{ secrets.AZURE_CREDENTIALS }} | |
- uses: azure/arm-deploy@v1 | |
id: deploy-arm-template | |
with: | |
resourceGroupName: ${{ secrets.AZURE_RESOURCE_GROUP }} | |
deploymentName: deploy-${{ steps.generate-vm-name.outputs.vm_name }} | |
template: ./azure-self-hosted-runners/azure-arm-template.json | |
parameters: ./azure-self-hosted-runners/azure-arm-template-example-parameters.json ${{ env.AZURE_ARM_PARAMETERS }} | |
- name: Show post-deployment script output | |
env: | |
CUSTOM_SCRIPT_OUTPUT: ${{ steps.deploy-arm-template.outputs.customScriptInstanceView }} | |
run: echo "$CUSTOM_SCRIPT_OUTPUT" | jq -r '.substatuses[0].message' | |
- name: Deallocate the VM for later use | |
if: env.DEALLOCATE_IMMEDIATELY == 'true' | |
uses: azure/CLI@v1 | |
with: | |
azcliversion: 2.43.0 | |
inlineScript: | | |
az vm deallocate -n ${{ steps.generate-vm-name.outputs.vm_name }} -g ${{ secrets.AZURE_RESOURCE_GROUP }} --verbose |