[TIL] What I Newly Learned (feat. CI/CD)

📌 What I newly learned

- git stash

: Temporary storage for changes

- git rebase

: Rearranges, combines, or eliminates commits in one branch by applying them to another branch. Typically used to clean up or combine commit history between branches.

• Creating .env file on EC2

  • You can use right-click to paste while in input mode.

- Using pm2

- pm2 restart [idNumber]: Restart the currently running pm2 service. - pm2 list: List the services managed by pm2. - pm2 delete [pid number]: Stop the currently running pm2 service. - pm2 log: Display the logs of the executed services. It can also display error messages, making it useful for debugging. - pm2 logs --lines [number]: Output the last [number] of logs in chronological order.

- Github Action -> CI/CD

• Encountered an error because the .env file was not being read.

  

• To use dotenv in Github Action, you need to add the environment variables to the repository.

• Repository > Settings > Security > Actions > New Repository Secret button

  

• Add all the environment variables used in the workflow.

• These variables can be accessed in the action workflow using syntax like echo "SECRET_KEY=${{ secrets.SECRET_KEY }}" >> .env.

• Modify the .yml file accordingly.

name: Node.js CI

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  test:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v3
    - name: Setup Node.js 16.x
      uses: actions/setup-node@v3
      with:
        node-version: 16.x
        cache: 'npm'
    - name: Load env file
      run: |
        touch .env
        echo "SECRET_KEY=${{ secrets.SECRET_KEY }}" >> .env
        echo "REFRESH_EXPIRES=${{ secrets.REFRESH_EXPIRES }}" >> .env
        echo "ACCESS_EXPIRES=${{ secrets.ACCESS_EXPIRES }}" >> .env
        echo "BCRYPT_SALT_ROUNDS=${{ secrets.BCRYPT_SALT_ROUNDS }}" >> .env
        echo "HOST_PORT=${{ secrets.HOST_PORT }}" >> .env
        echo "DB_TEST_NAME=${{ secrets.DB_TEST_NAME }}" >> .env
        echo "DB_USER=${{ secrets.DB_USER }}" >> .env
        echo "DB_PASSWORD=${{ secrets.DB_PASSWORD }}" >> .env
        echo "DB_NAME=${{ secrets.DB_NAME }}" >> .env
        echo "DB_HOST=${{ secrets.DB_HOST }}" >> .env
        echo

 "DB_DIALECT=${{ secrets.DB_DIALECT }}" >> .env
        echo "NODEMAILER_USER=${{ secrets.NODEMAILER_USER }}" >> .env
        echo "NODEMAILER_PASS=${{ secrets.NODEMAILER_PASS }}" >> .env
        echo "NODEMAILER_SERVICE=${{ secrets.NODEMAILER_SERVICE }}" >> .env
    - name: Install Dependencies
      run: npm ci
    - run: npm test

• During this process, I encountered the following error multiple times, which was caused by not creating the test database. To resolve it, create the test database with npx sequelize db:create --env test!

• All the tests passed, but I got this error. It seems like the address is already in use because the server is running with pm2. How do I resolve this...? It will be my next challenge...

📌 What to learn next

• Resolve the error in the previous Github Action and complete the CI/CD setup.