Deploying to Azure Kubernetes Service

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Introduction

This guide explains how to use GitHub Actions to build and deploy a project to Azure Kubernetes Service.

Prerequisites

Before creating your GitHub Actions workflow, you will first need to complete the following setup steps:

Create a target AKS cluster and an Azure Container Registry (ACR). For more information, see "Quickstart: Deploy an AKS cluster by using the Azure portal - Azure Kubernetes Service" and "Quickstart - Create registry in portal - Azure Container Registry" in the Azure documentation.
Create a secret called AZURE_CREDENTIALS to store your Azure credentials. For more information about how to find this information and structure the secret, see the Azure/login action documentation.

Creating the workflow

Once you've completed the prerequisites, you can proceed with creating the workflow.

The following example workflow demonstrates how to build and deploy a project to Azure Kubernetes Service when code is pushed to your repository.

Under the workflow env key, change the following values:

AZURE_CONTAINER_REGISTRY to the name of your container registry
PROJECT_NAME to the name of your project
RESOURCE_GROUP to the resource group containing your AKS cluster
CLUSTER_NAME to the name of your AKS cluster

This workflow uses the helm render engine for the azure/k8s-bake action. If you will use the helm render engine, change the value of CHART_PATH to the path to your helm file. Change CHART_OVERRIDE_PATH to an array of override file paths. If you use a different render engine, update the input parameters sent to the azure/k8s-bake action.

YAML

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

# GitHub recommends pinning actions to a commit SHA.
# To get a newer version, you will need to update the SHA.
# You can also reference a tag or branch, but the action may change without warning.

name: Build and deploy to Azure Kubernetes Service

env:
  AZURE_CONTAINER_REGISTRY: MY_REGISTRY_NAME # set this to the name of your container registry
  PROJECT_NAME: MY_PROJECT_NAME              # set this to your project's name
  RESOURCE_GROUP: MY_RESOURCE_GROUP          # set this to the resource group containing your AKS cluster
  CLUSTER_NAME: MY_CLUSTER_NAME              # set this to the name of your AKS cluster
  REGISTRY_URL: MY_REGISTRY_URL              # set this to the URL of your registry
  # If you bake using helm:
  CHART_PATH: MY_HELM_FILE                   # set this to the path to your helm file
  CHART_OVERRIDE_PATH: MY_OVERRIDE_FILES     # set this to an array of override file paths

on: [push]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2

    - name: Azure Login
      uses: azure/login@14a755a4e2fd6dff25794233def4f2cf3f866955
      with:
        creds: ${{ secrets.AZURE_CREDENTIALS }}

    - name: Build image on ACR
      uses: azure/CLI@61bb69d64d613b52663984bf12d6bac8fd7b3cc8
      with:
        azcliversion: 2.29.1
        inlineScript: |
          az configure --defaults acr=${{ env.AZURE_CONTAINER_REGISTRY }}
          az acr build -t  -t ${{ env.REGISTRY_URL }}/${{ env.PROJECT_NAME }}:${{ github.sha }}
    
    - name: Gets K8s context
      uses: azure/aks-set-context@94ccc775c1997a3fcfbfbce3c459fec87e0ab188
      with:
          creds: ${{ secrets.AZURE_CREDENTIALS }}
          resource-group: ${{ env.RESOURCE_GROUP }}
          cluster-name: ${{ env.CLUSTER_NAME }}
      id: login

    - name: Configure deployment
      uses: azure/k8s-bake@61041e8c2f75c1f01186c8f05fb8b24e1fc507d8
      with:
        renderEngine: 'helm'
        helmChart: ${{ env.CHART_PATH }}
        overrideFiles: ${{ env.CHART_OVERRIDE_PATH }}
        overrides: |     
          replicas:2
        helm-version: 'latest' 
      id: bake

    - name: Deploys application
    - uses: Azure/k8s-deploy@dd4bbd13a5abd2fc9ca8bdcb8aee152bb718fa78
      with:
        manifests: ${{ steps.bake.outputs.manifestsBundle }}
        images: |
          ${{ env.AZURE_CONTAINER_REGISTRY }}.azurecr.io/${{ env.PROJECT_NAME }}:${{ github.sha }}
        imagepullsecrets: |
          ${{ env.PROJECT_NAME }}

Additional resources

The following resources may also be useful:

For the original starter workflow, see azure-kubernetes-service.yml in the GitHub Actions starter-workflows repository.
The actions used to in this workflow are the official Azure Azure/login,Azure/aks-set-context, Azure/CLI, Azure/k8s-bake, and Azure/k8s-deployactions.
For more examples of GitHub Action workflows that deploy to Azure, see the actions-workflow-samples repository.

In this article

Introduction

Prerequisites

Creating the workflow

Additional resources