AWS Deployment Skill

This skill helps with AWS ECS deployment and infrastructure management for the ActivityTracking application.

When to Use

•Deploying to AWS ECS for the first time
•Updating existing ECS deployment
•Troubleshooting AWS infrastructure issues
•Configuring AWS services (RDS, S3, SES)

Architecture Overview

code

┌─────────────────────────────────────────────┐
│ Internet Gateway                            │
└─────────────────┬───────────────────────────┘
                  │
┌─────────────────▼───────────────────────────┐
│ Application Load Balancer (ALB)             │
│ - Health checks on /actuator/health         │
└─────────────────┬───────────────────────────┘
                  │
┌─────────────────▼───────────────────────────┐
│ ECS Fargate Service                         │
│ - Task Definition: 512 CPU / 1024 MB        │
│ - Auto-scaling: 1-3 tasks                   │
└─────────────────┬───────────────────────────┘
                  │
        ┌─────────┴─────────┐
        │                   │
┌───────▼─────┐    ┌────────▼────────┐
│ RDS         │    │ S3 Bucket       │
│ PostgreSQL  │    │ (Receipts)      │
│ Multi-AZ    │    │ + Lifecycle     │
└─────────────┘    └─────────────────┘

Deployment Steps

1. Pre-Deployment Checklist

• Docker image built and tested locally
• Environment variables defined (JWT_SECRET, DB_PASSWORD, etc.)
• CloudFormation templates reviewed
• AWS CLI configured with appropriate credentials
• ECR repository created for Docker images

2. Initial Infrastructure Deployment

powershell

# Using CloudFormation
cd cloudformation
.\scripts\deploy-stack.sh infrastructure-stack templates/infrastructure.yaml parameters/production.json

# Or using PowerShell script
.\aws\deploy-aws.ps1 -Environment production -StackName taskactivity-prod

3. Database Configuration

powershell

# Configure RDS endpoint in environment variables
$env:DATABASE_URL = "jdbc:postgresql://rds-endpoint:5432/taskactivity"

# Run schema initialization (first time only)
psql -h rds-endpoint -U dbuser -d taskactivity -f src/main/resources/schema.sql

4. S3 Receipt Storage Setup

powershell

# Create S3 bucket with lifecycle policy
aws s3 mb s3://taskactivity-receipts-prod

# Apply lifecycle policy
aws s3api put-bucket-lifecycle-configuration `
    --bucket taskactivity-receipts-prod `
    --lifecycle-configuration file://aws/s3-receipts-lifecycle-policy.json

# Enable encryption
aws s3api put-bucket-encryption `
    --bucket taskactivity-receipts-prod `
    --server-side-encryption-configuration '{
        "Rules": [{
            "ApplyServerSideEncryptionByDefault": {
                "SSEAlgorithm": "AES256"
            }
        }]
    }'

5. SES Email Configuration

powershell

# Configure SES
.\aws\configure-ses.ps1 -Region us-east-1 -FromEmail noreply@yourdomain.com

# Verify email addresses (if in sandbox)
.\aws\enable-ses-email.ps1 -EmailAddress user@example.com

6. Deploy Application

powershell

# Build and push Docker image to ECR
docker build -t taskactivity:latest .
aws ecr get-login-password | docker login --username AWS --password-stdin <account-id>.dkr.ecr.us-east-1.amazonaws.com
docker tag taskactivity:latest <account-id>.dkr.ecr.us-east-1.amazonaws.com/taskactivity:latest
docker push <account-id>.dkr.ecr.us-east-1.amazonaws.com/taskactivity:latest

# Update ECS service
aws ecs update-service `
    --cluster taskactivity-cluster `
    --service taskactivity-service `
    --force-new-deployment

Environment Variables for AWS

bash

# Application
JWT_SECRET=<from-secrets-manager>
JWT_EXPIRATION=86400000
JWT_REFRESH_EXPIRATION=604800000

# Database
DATABASE_URL=jdbc:postgresql://<rds-endpoint>:5432/taskactivity
DB_USERNAME=<from-secrets-manager>
DB_PASSWORD=<from-secrets-manager>

# Storage
storage.type=s3
storage.s3.bucket-name=taskactivity-receipts-prod
storage.s3.region=us-east-1

# Email
email.provider=ses
email.ses.region=us-east-1
email.from=noreply@yourdomain.com

# Admin
APP_ADMIN_INITIAL_PASSWORD=<from-secrets-manager>

# Profile
SPRING_PROFILES_ACTIVE=aws

Common AWS Issues

Issue: Task keeps restarting

Causes:

•Health check failing
•Missing environment variables
•Database connection issues

Solutions:

•Check CloudWatch logs: /ecs/taskactivity-service
•Verify security group rules allow outbound to RDS
•Test database connection from task
•Verify all required env vars are set

Issue: 502 Bad Gateway from ALB

Causes:

•Application not responding on correct port
•Health check endpoint failing
•Security group blocking ALB to ECS

Solutions:

•Verify server.port=8080 in application properties
•Test /actuator/health endpoint
•Check target group health in ALB console
•Verify security group rules

Issue: S3 upload fails

Causes:

•Incorrect IAM permissions
•Bucket doesn't exist
•Incorrect region configuration

Solutions:

•Verify ECS task role has S3 permissions
•Check bucket name in environment variables
•Verify S3 region matches configuration

Cost Management

powershell

# Check current costs
.\aws\check-billing.ps1 -StartDate (Get-Date).AddDays(-30) -EndDate (Get-Date)

Cost Optimization Tips:

•Use Fargate Spot for non-production
•Right-size RDS instance based on CloudWatch metrics
•Enable S3 lifecycle policies (IA, Glacier)
•Use Reserved Instances for steady-state workloads

Monitoring

Key CloudWatch Metrics:

•ECS: CPUUtilization, MemoryUtilization
•ALB: TargetResponseTime, HealthyHostCount
•RDS: DatabaseConnections, CPUUtilization
•Application: Custom metrics from Actuator

Alarms to Set:

•ECS tasks < 1 healthy instance
•RDS CPU > 80%
•ALB 5xx errors > threshold
•Database connections > 80% of max

Memory Bank References

•Check ai/devops-practices.md for AWS infrastructure details
•Check ai/project-overview.md for deployment models
•Check aws/AWS_Deployment.md for comprehensive deployment guide

Rollback Procedure

powershell

# Rollback to previous task definition
aws ecs update-service `
    --cluster taskactivity-cluster `
    --service taskactivity-service `
    --task-definition taskactivity-service:<previous-revision>

# Or use CloudFormation rollback
aws cloudformation rollback-stack --stack-name taskactivity-prod