Default admin username/password for Postgresql

When installing the production instance, is there a default admin username and password for Postgresql? I want to access the database with a GUI but I don’t know how to log in.

If you went by the online deployment docs (DevOps Guide :: Corteza Docs), then the credentials for the postgres 15 would be corteza/corteza.

Those are identified by env variables for the postgres service in docker compose file

POSTGRES_USER:     corteza