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PostgreSQL & MySQL Major Version Upgrade Readiness Checklist
Pre-flight Validation via pg_upgrade, Deprecation Auditing, and Zero-Downtime Rollback Planning
Checklist Progress: 0 / 2
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Compatibility & Dry-RunCRITICAL
1. Dry-Run Checker Executed?
Non-destructive simulation that verifies binary compatibility, user data types, and library symbols.
pg_upgrade --old-datadir=/var/lib/postgresql/16/main --new-datadir=/var/lib/postgresql/17/main --old-bindir=/usr/lib/postgresql/16/bin --new-bindir=/usr/lib/postgresql/17/bin --check
Authentication PluginsCRITICAL
2. caching_sha2_password Migration for MySQL 8.4?
MySQL 8.4 disables native password plugins by default. Verify all application drivers support caching_sha2_password.
ALTER USER 'app_user'@'%' IDENTIFIED WITH caching_sha2_password BY 'new_secure_password';