That seems to be the reason, thank you Adrian. At first connecting from the other pod in the AKS cluster does not work:
$ PGPASSWORD=timeshift_pass psql --host=timeshiftservice --port=5432 --dbname=timeshift_database --username=timeshift_user psql: error: connection to server at "timeshiftservice" (10.0.120.194), port 5432 failed: FATAL: password authentication failed for user "t imeshift_user" But once I connect to my PostgreSQL pod (or is it called "container"? I am always confused by that) and run locally $ psql -U postgres psql (17.4) Type "help" for help. timeshift_database=# ALTER ROLE timeshift_user PASSWORD 'timeshift_pass'; ALTER ROLE Then the connection from the other pod works immediately
