162 lines
4.6 KiB
Plaintext
162 lines
4.6 KiB
Plaintext
================================================================================
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MIGRATION PLAN: 23a52ed1507f
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================================================================================
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Source System: PostgreSQL 13 Production Database
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Target System: PostgreSQL 15 Cloud Database
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Migration Type: DATABASE
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Complexity Level: CRITICAL
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Estimated Duration: 95 hours (4.0 days)
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Created: 2026-02-16T13:47:23.704502
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MIGRATION PHASES
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----------------------------------------
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1. PREPARATION (19h)
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Description: Prepare systems and teams for migration
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Risk Level: MEDIUM
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Tasks:
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• Backup source system
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• Set up monitoring and alerting
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• Prepare rollback procedures
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• Communicate migration timeline
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• Validate prerequisites
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Success Criteria:
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✓ All backups completed successfully
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✓ Monitoring systems operational
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✓ Team members briefed and ready
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✓ Rollback procedures tested
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2. EXPAND (19h)
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Description: Execute expand phase
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Risk Level: MEDIUM
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Dependencies: preparation
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Tasks:
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• Complete expand activities
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Success Criteria:
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✓ Expand phase completed successfully
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3. MIGRATE (19h)
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Description: Execute migrate phase
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Risk Level: MEDIUM
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Dependencies: expand
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Tasks:
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• Complete migrate activities
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Success Criteria:
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✓ Migrate phase completed successfully
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4. CONTRACT (19h)
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Description: Execute contract phase
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Risk Level: MEDIUM
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Dependencies: migrate
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Tasks:
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• Complete contract activities
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Success Criteria:
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✓ Contract phase completed successfully
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5. CLEANUP (19h)
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Description: Execute cleanup phase
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Risk Level: MEDIUM
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Dependencies: contract
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Tasks:
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• Complete cleanup activities
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Success Criteria:
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✓ Cleanup phase completed successfully
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RISK ASSESSMENT
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----------------------------------------
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CRITICAL SEVERITY RISKS:
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• Insufficient rollback testing
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Category: operational
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Probability: high | Impact: critical
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Mitigation: Execute full rollback procedures in staging environment
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Owner: QA Team
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HIGH SEVERITY RISKS:
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• Data corruption during migration
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Category: technical
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Probability: low | Impact: critical
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Mitigation: Implement comprehensive backup and validation procedures
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Owner: DBA Team
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• Extended downtime due to migration complexity
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Category: technical
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Probability: medium | Impact: high
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Mitigation: Use blue-green deployment and phased migration approach
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Owner: DevOps Team
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• Business process disruption
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Category: business
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Probability: medium | Impact: high
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Mitigation: Communicate timeline and provide alternate workflows
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Owner: Business Owner
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• Zero-downtime requirement increases complexity
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Category: business
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Probability: high | Impact: medium
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Mitigation: Implement blue-green deployment or rolling update strategy
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Owner: DevOps Team
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• Regulatory compliance requirements
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Category: compliance
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Probability: medium | Impact: high
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Mitigation: Ensure all compliance checks are integrated into migration process
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Owner: Compliance Team
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ROLLBACK STRATEGY
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----------------------------------------
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Rollback Triggers:
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• Critical system failure
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• Data corruption detected
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• Migration timeline exceeded by > 50%
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• Business-critical functionality unavailable
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• Security breach detected
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• Stakeholder decision to abort
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Rollback Phases:
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CLEANUP:
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- Revert cleanup changes
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- Restore pre-cleanup state
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- Validate cleanup rollback success
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Estimated Time: 285 minutes
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CONTRACT:
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- Revert contract changes
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- Restore pre-contract state
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- Validate contract rollback success
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Estimated Time: 285 minutes
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MIGRATE:
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- Revert migrate changes
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- Restore pre-migrate state
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- Validate migrate rollback success
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Estimated Time: 285 minutes
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EXPAND:
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- Revert expand changes
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- Restore pre-expand state
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- Validate expand rollback success
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Estimated Time: 285 minutes
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PREPARATION:
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- Revert preparation changes
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- Restore pre-preparation state
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- Validate preparation rollback success
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Estimated Time: 285 minutes
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SUCCESS CRITERIA
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----------------------------------------
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✓ All data successfully migrated with 100% integrity
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✓ System performance meets or exceeds baseline
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✓ All business processes functioning normally
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✓ No critical security vulnerabilities introduced
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✓ Stakeholder acceptance criteria met
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✓ Documentation and runbooks updated
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STAKEHOLDERS
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----------------------------------------
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• Business Owner
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• Technical Lead
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• DevOps Team
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• QA Team
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• Security Team
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• End Users
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