CI-CDJenkins-K8s-helm-ECR

Please see this Article regarded as the guide of this project. https://medium.com/@wingyiwy/ci-cd-for-a-piece-java-code-in-jenkins-with-helm-kubernetes-and-aws-ecr-2c3cc1640d25

Test helm charter

helloworld is a kubernetes deployment deployed by helm chart. It will pass ECR repo ImageName and ECR ImageTag from value.yaml to deployment_helloworld.yaml

Files

• CI-CD/
  • deploy/Jenkins_deploy_playbook.yml # An Ansible script for Helm deployment.
  • helm/
    • Chart.yaml # A YAML file containing information about the chart.
    • README.md # A README file.
    • values.yaml # The default configuration values for this chart
    • templates/ # A directory of templates that, when combined with values, # Will generate valid Kubernetes manifest files.
      • NOTES.txt # A plain text file containing short usage notes
      • deployment_helloworld.yaml # A kubernetes deployment file for helloworld.
• code/HelloWorld.java # A piece of Java code.
• Jenkinsfile # Used to set Jenkins pipeline process.
• Dockerfile # Used to bake docker image to ECR repo.
• startup.sh # Used to run java code.

Jenkins pipeline job

Stage1: Checkout

Jenkins pipeline checks out the merge of branches from Github hook and stores the code into working file. And it passes the image tag from checkout to the following stages.

Stage2: Docker Build

Docker builds a new image with updated code and push it into AWS ECR .

Stage3: Deploy in k8s with Helm

Use Ansible to call Helm chart to deploy the image which contains the code of helloworld from AWS ECR into Kubernetes pods.