I host the databases of several clients. For each database
dbname, I currently have a
dbnameusers role that I grant to the users of that client.
I would now like to have read only “sub roles”.
I created a
test database, a role
usersro and a user
ro (in role
Then I granted all privileges on the DB to
usersro and revoked the
CREATE privilege :
# grant all on database test to usersro; GRANT # revoke create on database test from usersro; REVOKE
\l shows something that looks correct :
# \l List of databases Name | Owner | Encoding | Collate | Ctype | Access privileges ------------+-------------+----------+-------------+-------------+----------------------- test | cat | UTF8 | fr_FR.UTF-8 | fr_FR.UTF-8 | =Tc/cat + | | | | | cat=CTc/cat + | | | | | usersro=Tc/cat
But connecting as user
ro, I can still create a table. I guess this comes from the
PUBLIC role but I haven’t found a way to see those default privileges.
My guess is that I should revoke all privileges from the PUBLIC role and recreate them in the
usersrw role and only part of them in
usersro (hence the need to know which are the default ones).
Is this the correct approach ? I have the feeling that PostgreSQL is quite permissive out of the box and that you have to break everything in order to build a multilevel access architecture.
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