Cumulus Upgrade DB Migration Step - Between v20.3.0 and v21.0.0

[krisstanton]

Release Notes for v21.0.0 upgrade (includes guides) https://github.com/nasa/cumulus/releases/tag/v21.0.0

• Stop any active Ingests
• Create DB Snapshots
  • Sandbox Snapshot created
  • UAT Snapshot created
  • PROD Snapshot created
• Run Archived Column Creation and Indexing (see guides)
  • Sandbox DB
    • Passed Smoke Tests after migration
  • UAT DB
    • Passed Smoke Tests after migration
  • PROD DB
    • Passed Smoke Tests after migration
• Run producer_granule_id migration (see official guide)
  • Sandbox DB Migration
    • Check for Duplicates
    • Run long running python script
    • monitor and resume (if necessary)
    • Passed Smoke Test
  • UAT DB Migration
    • Check for Duplicates
    • Run long running python script
    • monitor and resume (if necessary)
    • Passed Smoke Test
  • PROD DB Migration
    • Check for Duplicates
    • Run long running python script
    • monitor and resume (if necessary)
    • Passed Smoke Test