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pozoledf-sample-app

PozoleDF Sample NodeJS Application prepared for K8S and Jenkins pipeline.

Requirements

  • Docker
  • NodeJS 12 or superior

Running and testing

Use the following command to run the app:

$ npm start

Use the following command to check the published endpoint (once the app is running):

$ curl http://localhost:3000/health
OK!

Building

Add the project to the Jenkins server installed following the instructions at https://github.com/kuritsu/pozoledf-chef-repo.

Notice that the following Jenkins credentials are required to get a successful build:

  • docker-registry-fqdn: Text with the host name of your Docker Registry. Ex. myregistry.docker.com.
  • docker-login-cmd: The Docker login command in case you use a private registry, for example: docker login myregistry.private.com -u admin -p 'MyPassw0rd'.
  • jenkins-github-creds: User and password from GitHub. Instead of using a personal password, you should use a PAT (Personal Access Token), check here for more details. It requires only the repo and user scopes.

The docker image we use in Jenkins with all the tools required can be found in the Dockerfile-pipeline file. It is hosted already in Docker Hub with the name kuritsu/pozoledf-jenkins-util:latest as can be noted in the Jenkinsfile.

The pipeline builds a Docker image configured in the Dockerfile with the very simple nodejs API app, it is tagged and pushed to a Docker registry.

Also note that when the build triggers for the main branch, the https://github.com/kuritsu/pozoledf-sample-app-deployment repo is cloned, a branch with the release info is created, and the image:tag information is updated with kustomize. The branch is then pushed to GitHub. This will trigger another Jenkins pipeline contained in the mentioned repo. Read the README there to get more details on the flow.