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README.md

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Interview

This repo is used for devops interview.

Please DO NOT push code into main branch directly!

Expectation

  • The application couldn't start, fix the issue.
  • There are many bad practices in this repo, try to make it better.
  • Any further improvement in this repo, like infra, HA, etc.

Prerequisite

Instructions

Init your new local environment

./auto/start-local-env

After the initialization process is successful done, you can access your local environment via 127.0.0.1 in your browser.

Provision infrastructure

./auto/provison-infra-via-terraform {CLOUD_PROVIDER}

Use this script to provision infrastructure on the according cloud, create a provider dir and terraform configs in terraform dir, terraform will provision it. You can also use the extended script like

./auto/provison-infra-on-alicloud

to provision on the specific cloud.

Make sure you set the proper credential for terraform to work, check the code for each one.

Setup kubectl config for k8s

After the provision infrastructure step is done, we should have a workable k8s cluster. Provision step will copy the kubectl config to ./tmp/kube-config.txt in local terraform dir.

Use the following command to copy the config file as config/kube-config.txt to make kubectl in scripts work.

auto/get-kubeconfig-from-terraform {CLOUD_PROVIDER}

Check the above files if there are something wrong.

Build and release docker images

Github action will be triggered to build and release the images to alicr and dockerhub once code is pushed into main branch and any branch start with joi-. Please use following URLs to access the images.

Dockerhub

App: zionlab/interview-app:{TAG}
Migration: zionlab/migratino-app:{TAG}

If you want to push images to your own docker registry, update the docker registry credential in the config/cr-credential and set the right repo path for each image, then run the following script, it will push docker images to your docker hub.

./auto/release-docker-images-to-dockerhub

Accordingly, use auto/release-docker-images-to-alicr to push image to ali cr.

Deploy application to k8s

./auto/deploy-to-k8s

This script will generate the k8s relevant files and deploy it. We use kustomize to manage the configs. After deployment process is finished, you can access the application via PUBLIC_IP:32100

Destroy infrastructure

./auto/destroy-infra-via-terraform {CLOUD_PROVIDER}

Destroy the infrastructure which created by the provision scripts, you can also use the extended script.

Stop and clean local environment

./auto/stop-local-env