Migrate Applications from Elastic Beanstalk to AWS Fargate
Proposal to migrate Elastic Beanstalk-hosted applications to AWS Fargate
Summary
Proposal to migrate applications currently hosted on Elastic Beanstalk to AWS Fargate, a serverless container orchestration platform.
Rationale
[To be filled in - reasons for migrating from Elastic Beanstalk to Fargate]
Key benefits expected:
- Greater infrastructure control and flexibility
- Improved cost efficiency at scale
- Enhanced performance and resource allocation
- Better integration with AWS ecosystem
- Reduced vendor lock-in
- Improved scalability options
Affected Applications
- buying-service-al202339-live - REST based service for caravan buying
Impact
Services Affected
- All Elastic Beanstalk-hosted applications
- [List specific applications to be migrated]
Technical Considerations
- Container image creation and registry setup (ECR)
- VPC and networking configuration
- Load balancer setup (ALB/NLB)
- Service discovery and task definitions
- Auto-scaling policies
- CI/CD pipeline modifications
- Logging and monitoring infrastructure
- Secret management (AWS Secrets Manager/Parameter Store)
Infrastructure Considerations
- Database migration (Elastic Beanstalk Postgres to RDS/Aurora)
- Redis/cache migration (Elastic Beanstalk Redis to ElastiCache)
- File storage migration (S3 integration)
- Add-on replacements and alternatives
- Domain and DNS configuration
- SSL/TLS certificate management
Data Considerations
- Database backup and migration strategy
- Data consistency during migration
- Downtime requirements
- Rollback procedures
Implementation Plan
Phase 1: Assessment & Design
- Audit all Elastic Beanstalk applications and dependencies
- Document current Elastic Beanstalk add-ons and services
- Design AWS infrastructure architecture
- Map Elastic Beanstalk add-ons to AWS equivalents
- Containerize applications (if not already containerized)
- Create cost analysis and comparison
- Define migration priority and sequence
Phase 2: Infrastructure Setup
- Set up AWS accounts and IAM roles
- Configure VPC, subnets, and security groups
- Set up container registry (ECR)
- Configure ECS clusters and Fargate capacity
- Set up load balancers and target groups
- Configure CloudWatch logging and monitoring
- Set up AWS Secrets Manager
- Create infrastructure as code (Terraform/CloudFormation)
Phase 3: Application Preparation
- Create Dockerfiles for each application
- Build and test container images
- Create ECS task definitions
- Configure environment variables and secrets
- Set up CI/CD pipelines for container builds
- Implement health checks and monitoring
- Create deployment scripts
Phase 4: Data Migration
- Set up target databases (RDS/Aurora)
- Configure database replication (if applicable)
- Plan data migration windows
- Test database migration procedures
- Migrate Redis/cache data
- Migrate file storage to S3
Phase 5: Testing & Validation
- Deploy to staging/test environment
- Perform integration testing
- Load and performance testing
- Security and compliance review
- Validate monitoring and alerting
- Test disaster recovery procedures
Phase 6: Migration & Cutover
- Execute database migration
- Deploy applications to Fargate
- Update DNS records
- Monitor application health and performance
- Validate all functionality
- Address any issues
- Decommission Elastic Beanstalk applications
- Cancel Elastic Beanstalk subscriptions
Risks & Mitigation
| Risk | Impact | Mitigation |
|---|---|---|
| Extended downtime during migration | Critical | Plan careful cutover with blue-green deployment |
| Data loss during database migration | Critical | Multiple backups, test migrations, validation procedures |
| Application compatibility issues | High | Thorough testing in staging environment |
| Increased operational complexity | Medium | Comprehensive documentation, training, automation |
| Cost overruns | Medium | Detailed cost analysis, monitoring, right-sizing |
| Performance degradation | High | Performance testing, proper resource allocation |
| Loss of Elastic Beanstalk add-on functionality | Medium | Identify and implement AWS equivalents beforehand |
| CI/CD pipeline disruption | Medium | Test new pipelines before cutover |
Timeline
[To be determined]
Status
Current Status: Draft
History:
- 2025-12-22: Proposal created