Generate Professional Deployment Scripts

```bash #!/bin/bash # Node.js API Deployment Script for AWS ECS - Staging Environment # Author: DevOps Team # Version: 1.0 set -e # Configuration Variables APP_NAME="my-api" ENVIRONMENT="staging" ECS_CLUSTER="staging-cluster" ECS_SERVICE="my-api-service" DB_MIGRATION_TIMEOUT=300 REGION="us-east-1" # Colors for output RED='\033[0;31m' GREEN='\033[0;32m' YELLOW='\033[1;33m' NC='\033[0m' log() { echo -e "${GREEN}[$(date +'%Y-%m-%d %H:%M:%S')] $1${NC}" } error() { echo -e "${RED}[ERROR] $1${NC}" >&2 exit 1 } # Pre-deployment checks log "Starting pre-deployment checks..." # Check AWS CLI and credentials aws sts get-caller-identity > /dev/null || error "AWS credentials not configured" # Backup current deployment log "Creating deployment backup..." aws ecs describe-services --cluster $ECS_CLUSTER --services $ECS_SERVICE > backup_$(date +%Y%m%d_%H%M%S).json # Build and push Docker image log "Building Docker image..." docker build -t $APP_NAME:$ENVIRONMENT . docker tag $APP_NAME:$ENVIRONMENT $ECR_REPOSITORY:$ENVIRONMENT aws ecr get-login-password --region $REGION | docker login --username AWS --password-stdin $ECR_REPOSITORY docker push $ECR_REPOSITORY:$ENVIRONMENT # Run database migrations log "Running database migrations..." timeout $DB_MIGRATION_TIMEOUT npm run migrate || error "Database migration failed" # Deploy to ECS log "Deploying to ECS..." aws ecs update-service --cluster $ECS_CLUSTER --service $ECS_SERVICE --force-new-deployment # Wait for deployment to complete log "Waiting for deployment to stabilize..." aws ecs wait services-stable --cluster $ECS_CLUSTER --services $ECS_SERVICE # Post-deployment verification log "Running post-deployment health checks..." for i in {1..5}; do if curl -f http://$LOAD_BALANCER_URL/health; then log "Deployment successful!" exit 0 fi sleep 30 done error "Health check failed after deployment" ```