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wildan3105wildan3105
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Chore/blue green deployment (#264)
* ci: add initial blue-green deployment * ci: init deployment using blue-green * ci: remove nginx operation * ci: check npm existence * ci: re-run after creating symlink directly on machine * ci: export nvm * ci: perform nginx reload * ci: use target_port as env.PORT * ci: fix env * ci: fix sed * ci: comment out sed nginx * ci: remove nginx * ci: remove port * ci: inject port directly during pm2 startup * ci: disable env first * ci: disable env first * ci: write env via ssh * ci: enable nginx update * ci: use master branch
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‎.github/workflows/deploy.yml‎

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Original file line numberDiff line numberDiff line change
@@ -8,82 +8,99 @@ on:
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jobs:
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deploy:
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runs-on: ubuntu-latest
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env:
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PROJECT_REPO: [email protected]:wildan3105/github-langs.git
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BLUE_NAME: "blue"
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GREEN_NAME: "green"
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BLUE_PORT: 3000
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GREEN_PORT: 3001
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NGINX_CONF: /etc/nginx/sites-available/gitstats.wildans.site
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BLUE_DIR: /var/www/html/blue
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GREEN_DIR: /var/www/html/green
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steps:
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- name: Check out the code
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uses: actions/checkout@v3
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- name: Verify SSH connection and deploy
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uses: appleboy/[email protected]
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- name: Deployment
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uses: appleboy/[email protected]
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env:
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ACTIVE_ENV: ""
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TARGET_ENV: ""
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TARGET_DIR: ""
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TARGET_PORT: ""
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TOKEN: ""
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ENV: ""
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with:
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host: ${{ secrets.VPS_HOST }}
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username: ${{ secrets.VPS_USERNAME }}
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password: ${{ secrets.VPS_PASSWORD }}
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port: 22
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envs: ACTIVE_ENV,TARGET_ENV,TARGET_DIR,TARGET_PORT, TOKEN, ENV
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script: |
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# Set paths for npm and node
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export PATH=$PATH:/root/.nvm/versions/node/v18.10.0/bin
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# Define directories
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TARGET_DIR="/var/www/html"
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TEMP_DIR="${TARGET_DIR}/tmp"
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SYMLINK="${TARGET_DIR}/current"
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# Prepare the temporary area
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echo "Preparing the temporary deployment directory..."
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sudo rm -rf $TEMP_DIR
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sudo mkdir -p $TEMP_DIR
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# Clone the repo into the temporary directory
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echo "Cloning repository to the temporary directory..."
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git clone [email protected]:wildan3105/github-langs.git $TEMP_DIR
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# Ensure necessary files are present
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if [ -f "$TEMP_DIR/src/index.js" ]; then
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echo "Entry point found in the temporary directory"
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echo "Deployment using blue-green is started..."
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export NVM_DIR=~/.nvm
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source ~/.nvm/nvm.sh
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echo "Determining the current active environment..."
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if grep -q "proxy_pass http://localhost:${{ env.BLUE_PORT }};" "${{ env.NGINX_CONF }}"; then
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export ACTIVE_ENV="${{ env.BLUE_NAME }}"
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elif grep -q "proxy_pass http://localhost:${{ env.GREEN_PORT }};" "${{ env.NGINX_CONF }}"; then
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export ACTIVE_ENV="${{ env.GREEN_NAME }}"
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else
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echo "Error: Entry point not found in the temporary directory!"
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echo "error: could not determine active environment" >&2
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exit 1
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fi
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# Set environment variables
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export ENV=${{ secrets.ENV }}
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export TOKEN=${{ secrets.TOKEN }}
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# Install dependencies
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echo "Installing dependencies..."
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cd $TEMP_DIR
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npm install
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# Gracefully stop the existing application if it's running on port 5000
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if lsof -i:5000; then
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echo "Stopping existing application running on port 5000..."
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PID=$(lsof -t -i:5000)
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sudo kill -9 $PID || echo "Failed to kill process with PID $PID"
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echo "Active env is $ACTIVE_ENV"
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echo "Set the target environment..."
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if [ "$ACTIVE_ENV" == "blue" ]; then
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export TARGET_ENV="${{ env.GREEN_NAME }}"
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export TARGET_PORT="${{ env.GREEN_PORT }}"
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export TARGET_DIR="${{ env.GREEN_DIR }}"
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elif [ "$ACTIVE_ENV" == "green" ]; then
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export TARGET_ENV="${{ env.BLUE_NAME }}"
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export TARGET_PORT="${{ env.BLUE_PORT }}"
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export TARGET_DIR="${{ env.BLUE_DIR }}"
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else
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echo "error: could not determine target environment" >&2
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exit 1
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fi
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# Start the application in the background using Node
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echo "Starting the application..."
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ENV=$ENV TOKEN=$TOKEN npm run start-prod
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echo "The upcoming target environment is as follows:"
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echo "Target env: $TARGET_ENV"
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echo "Target port: $TARGET_PORT"
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echo "Target dir: $TARGET_DIR"
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# Switch symlink atomically
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echo "Updating symlink to point to the new temporary directory..."
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sudo ln -sfn $TEMP_DIR $SYMLINK
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echo "Cloning the repository..."
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rm -rf $TARGET_DIR
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mkdir -p $TARGET_DIR
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git clone ${{ env.PROJECT_REPO }} $TARGET_DIR
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echo "Repository cloned"
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# Verify that the symlink points to the latest deployment
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echo "Deployment verification:"
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ls -l $SYMLINK
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# delay before performing healthcheck
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sleep 10s
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echo "Writing to environment variables..."
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export ENV="${{ secrets.ENV }}"
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export TOKEN="${{ secrets.TOKEN }}"
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echo "Environment variables written"
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# perform healthcheck
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echo "Performing health check on http://localhost:5000..."
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STATUS_CODE=$(curl -o /dev/null -s -w "%{http_code}" http://localhost:5000)
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echo "Install and build application..."
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cd $TARGET_DIR
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npm install
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echo "Dependencies installed and app built"
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if [ "$STATUS_CODE" -ne 200 ]; then
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echo "Health check failed with status code: $STATUS_CODE"
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exit 1
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echo "Start or restart application via PM2..."
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if pm2 list | grep -q "$TARGET_ENV"; then
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echo "App detected. Restarting the app..."
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pm2 restart "$TARGET_ENV" || { echo "Failed to restart app"; exit 1; }
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else
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echo "Health check passed with status code: $STATUS_CODE"
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echo "App is not started yet. Starting the app..."
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PORT=$TARGET_PORT pm2 start npm --name "$TARGET_ENV" -- run start || { echo "Failed to start app"; exit 1; }
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fi
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echo "Application started/restarted"
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echo "Adding delay to ensure the app is ready..."
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sleep 10s
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echo "Delay finished"
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echo "Update nginx port..."
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sudo sed -i "s|proxy_pass http://localhost:[0-9]*;|proxy_pass http://localhost:$TARGET_PORT;|" "${{ env.NGINX_CONF }}"
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sudo nginx -s reload
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echo "Nginx updated"

‎package.json‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,8 +8,7 @@
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},
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"main": "index.js",
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"scripts": {
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"start-dev": "node_modules/.bin/pm2 start src/index.js --watch --name githublangs | gulp",
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"start-prod": "node_modules/.bin/pm2 stop githublangs || true && node_modules/.bin/pm2 start -f src/index.js --name githublangs | gulp",
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"start": "node src/index.js | gulp",
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"lint": "eslint '**/*.js' --ignore-pattern node_modules/",
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"lint:fix": "eslint --fix '**/*.js' --ignore-pattern node_modules/",
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"mocha": "mocha",

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