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From: "Ing. Marijo Kristo" <marijo.kristo@icloud.com>
Mime-Version: 1.0 (1.0)
Date: Mon, 31 Mar 2025 17:26:13 +0200
Subject: Revoke Connect Privilege from Database not working
Message-Id: <6C13A1CC-3841-4A5E-BC78-C8F9C5B120BB@icloud.com>
References: <18873-c148b32c0e501cc0@postgresql.org>
To: pgsql-sql@lists.postgresql.org
Archived-At: 
 <https://www.postgresql.org/message-id/6C13A1CC-3841-4A5E-BC78-C8F9C5B120BB%40icloud.com>
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> Hello,
>=20
> we are using Vault to provision temporary users which get deleted after a
> while by the same user.
> For this purpose we have created a vault_admin user.
>=20
> postgres=3D# \du vault_admin
>            List of roles
>  Role name  |       Attributes
> -------------+------------------------
> vault_admin | Superuser, Create role
>=20
> postgres=3D# \l "disp_db"
>=20
>         List of databases
>  Name   |       Owner       | Encoding | Locale Provider |  Collate   | =20=

> Ctype    | ICU Locale | ICU Rules |                               Access
> privileges
> ---------+-------------------+----------+-----------------+------------+--=
----------+------------+-----------+----------------------------------------=
----------------------------------------
> disp_db | app_disp_db_admin | UTF8     | libc            | en_US.utf8 |
> en_US.utf8 |            |           |
> app_disp_db_admin=3DCTc/app_disp_db_admin                                 =
   =20
> +
>         |                   |          |                 |            |   =
=20
>       |            |           | app_disp_db=3DTc/app_disp_db_admin       =
  =20
>                                   +
>         |                   |          |                 |            |   =
=20
>       |            |           | pg_database_owner=3DCTc/app_disp_db_admin=
  =20
>                                   +
>         |                   |          |                 |            |   =
=20
>       |            |           | vault_admin=3Dc*/app_disp_db_admin       =
  =20
>                                   +
>         |                   |          |                 |            |   =
=20
>       |            |           |
> "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00"=3Dc/vault_admi=
n  =20
> +
>         |                   |          |                 |            |   =
=20
>       |            |           | app_disp_db_readonly=3Dc/app_disp_db_admi=
n
>=20
>=20
> Removing the connect privilege with the Postgres Superuser and with the
> Vault Admin user does not work.
>=20
> postgres=3D# select current_user;
> current_user
> --------------
> postgres
>=20
> postgres=3D# revoke connect on database "disp_db" from
> "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00";
> REVOKE
>=20
> postgres=3D# drop user
> "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00";
> ERROR:  role "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00"
> cannot be dropped because some objects depend on it
> DETAIL:  privileges for database disp_db
>=20
> Same happens when trying to revoke with the vault admin user:
>=20
> disp_db=3D# select current_user;
> current_user
> --------------
> vault_admin
> (1 row)
>=20
> disp_db=3D# revoke connect on database "disp_db" from
> "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00";
> REVOKE
> disp_db=3D# drop user
> "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00";
> ERROR:  role "dev_oidc-m-kristo-rewe-group-at-2025_02_28T09_06_30+00:00"
> cannot be dropped because some objects depend on it
> DETAIL:  privileges for database disp_db
>=20
> Does not work via PSQL nor with pgadmin.
>=20
> Best Regards
> Marijo Kristo
>=20