On 2 February 2017 at 18:48, Peter Eisentraut <peter.eisentr...@2ndquadrant.com> wrote: > On 2/2/17 8:32 AM, Simon Riggs wrote: >> I think we should remove the "replication" false database concept in >> pg_hba.conf altogether and allow any valid pg_hba rule to invoke a >> replication connection, if one is requested. Roles would still need >> the REPLICATION capability before this would be allowed. Having both >> of those things doesn't materially improve security control. > > It's weirdly inconsistent now. You need a "replication" line in > pg_hba.conf to connect for logical decoding, but you can't restrict that > to a specific database because the database column in pg_hba.conf is > occupied by the "replication" key word.
Agreed. Change needed. > However, you would still want a way to configure a user for logical > decoding for any database but no physical replication, or vice versa. > Just getting rid of the replication key word would prevent that, I think. We currently have REPLICATION to mean "physical replication". I think if we have another capability for logical replication then we would be able to easily allow one or the other, or both, so I don't see a problem here that forces us to keep pg_hba.conf the way it is. >> It would also be useful to be able prevent users with REPLICATION >> capability from connecting as normal users, if the are marked as >> NOLOGIN. > > That sounds useful. > > (Superusers not have the replication attribute by default is an > additional possible annoyance.) -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers