Charmed PostgreSQL K8s How-to - Perform a major upgrade

Perform a major upgrade

Example: PostgreSQL 14 → PostgreSQL 15

Currently, this charm only supports PostgreSQL 14. Therefore, only minor upgrades are possible.

Canonical is NOT planning to support in-place upgrades for the major version change. The new PostgreSQL cluster will have to be installed nearby, and the data will be copied from the old to the new installation. After announcing the next PostgreSQL major version support, the appropriate manual will be published here.