Charmed PostgreSQL K8s How-to - Upgrade

[taurus (Alex Lutay)]

Overview

Charmed PostgreSQL K8s upgrade and rollback guides:

Migration

• Major upgrade, e.g. PostgreSQL 14 → PostgreSQL 15.

• Major rollback, e.g. PostgreSQL 15 → PostgreSQL 14.

In-place minor upgrade

• Minor upgrade, e.g. PostgreSQL 14.8 → PostgreSQL 14.9
  (including charm revision bump 42 → 43).

• Minor rollback, e.g. PostgreSQL 14.9 → PostgreSQL 14.8
  (including charm revision return 43 → 42).