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docs/COMPLETE_MIGRATION_GUIDE.md
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Complete Migration Guide

Date: 2025-01-27 Purpose: Comprehensive guide for all migration types Status: Complete

Overview

This guide provides comprehensive instructions for migrating projects to shared infrastructure, services, and monorepos.

Migration Types

1. Monitoring Migration

Purpose: Migrate projects to shared monitoring stack

Steps:

  1. Ensure service exposes metrics endpoint
  2. Add metrics port to service
  3. Create ServiceMonitor resource
  4. Apply ServiceMonitor

Script: scripts/migrate-to-monitoring.sh

Guide: See docs/K8S_MIGRATION_GUIDE.md

2. Kubernetes Migration

Purpose: Migrate projects to shared Kubernetes cluster

Steps:

  1. Create namespace
  2. Create deployment
  3. Create service
  4. Create ingress
  5. Configure monitoring
  6. Test deployment

Script: scripts/migrate-to-k8s.sh

Guide: See docs/K8S_MIGRATION_GUIDE.md

3. API Gateway Migration

Purpose: Migrate projects to unified API gateway

Steps:

  1. Register service with gateway
  2. Configure routes
  3. Set up authentication
  4. Configure rate limiting
  5. Update client applications
  6. Test endpoints

Script: scripts/migrate-to-api-gateway.sh

Guide: See docs/API_GATEWAY_MIGRATION_GUIDE.md

4. Shared Packages Migration

Purpose: Migrate projects to use shared packages

Steps:

  1. Install shared packages
  2. Update imports
  3. Remove duplicate code
  4. Update configuration
  5. Test functionality

Script: scripts/migrate-to-shared-packages.sh

Guide: See docs/SHARED_PACKAGES_MIGRATION_GUIDE.md

5. Terraform Migration

Purpose: Migrate projects to use shared Terraform modules

Steps:

  1. Review current infrastructure
  2. Identify modules to use
  3. Update Terraform configuration
  4. Update resource references
  5. Test migration
  6. Apply changes

Script: scripts/migrate-terraform.sh

Guide: See docs/TERRAFORM_MIGRATION_GUIDE.md

6. DBIS Monorepo Migration

Purpose: Migrate DBIS projects to monorepo

Steps:

  1. Set up monorepo structure
  2. Migrate projects
  3. Set up shared packages
  4. Configure CI/CD
  5. Test migration

Script: scripts/migrate-dbis-project.sh

Guide: See docs/DBIS_MONOREPO_MIGRATION_PLAN.md

Migration Checklist

Pre-Migration

  • Review migration guide
  • Assess project complexity
  • Create backup
  • Set up test environment
  • Prepare rollback plan

During Migration

  • Follow step-by-step guide
  • Test each step
  • Document changes
  • Verify functionality

Post-Migration

  • Verify all services
  • Test integrations
  • Update documentation
  • Monitor metrics
  • Train team

Best Practices

Planning

  • Start with low-risk projects
  • Test in dev/staging first
  • Have rollback plan ready
  • Communicate with team

Execution

  • Follow guides step-by-step
  • Test thoroughly
  • Document changes
  • Monitor closely

Post-Migration

  • Verify everything works
  • Update documentation
  • Share learnings
  • Optimize as needed

Troubleshooting

Common Issues

  • Configuration errors
  • Network connectivity
  • Resource conflicts
  • Permission issues

Solutions

  • Check logs
  • Verify configurations
  • Review documentation
  • Ask for help

Support

Resources

  • Migration guides in docs/
  • Helper scripts in scripts/
  • Example configurations
  • Troubleshooting sections

Getting Help

  • Review documentation
  • Check examples
  • Review similar migrations
  • Ask team members

Last Updated: 2025-01-27

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