nixos/hydra: avoid conflicts for local postgres ident map

The key change here is, that the match was on the hydra database only
previously, but is now limited to to the hydra role instead. This avoids
conflicts with rules that are created by other modules or downstream
users.

With this change, we can remove the additional "postgres postgres" line,
because the default pg_hba line will kick in again and allow the
postgres user access to the postgres role.

Renaming the map from hydra-users to hydra is for consistency, so that
all modules can define maps matching in name with the role they manage.

The change from ident to peer is just cosmetic, ident is only used for
TCP connections and falls back to peer anyway.

0 files changed, 0 insertions, 0 deletions