Upgrade Planning

Upgrade Planning An architecture diagram generated by Archify. Upgrade Planning · cluster upgrade preparation · Architecture component Upgrade Planning cluster upgrade preparation Check Version Compatibility · current → target version · Planning tasks Check Version Compatibility current → target version Create Backup · before upgrading · Planning tasks Create Backup before upgrading Choose Upgrade Strategy · include rollback path · Planning tasks Choose Upgrade Strategy include rollback path Plan Downtime · estimate impact scope · Planning tasks Plan Downtime estimate impact scope Review API Changes · API changes between versions · Concrete actions Review API Changes API changes between versions etcd Backup · snapshot save · Concrete actions etcd Backup snapshot save In-place vs Blue/Green · see strategy comparison · Concrete actions In-place vs Blue/Green see strategy comparison User Communication · announce schedule and impact · Concrete actions User Communication announce schedule and impact Planning tasks Concrete actions Legend Planning task Upgrade planning Concrete action

Upgrade strategy comparison

  • • In-place upgrade: upgrade the existing cluster directly — resource efficient but rollback is complex (dev/test)
  • • Blue/green deployment: build a new-version cluster and switch — safe rollback, duplicated resources (production)
  • • Canary deployment: move only some workloads to the new cluster — gradual verification, dual operation (critical production)