Hi all, I have a problem with psql cert authentication and user mapping.
In my installation, the user certificate CN's contain human-readable names (utf8, with spaces, etc.). I want *all* users connecting with cert authentication to be mapped to a certain database role. The server runs on Debian Stretch, using the package “postgresql-10” ver. “10.11-1.pgdg90+1”. The configuration in pg_hba.conf is, inter alia <snip> hostssl testdb all 172.16.61.0/24 cert map=certaccess </snip> The file pg_ident.conf contains the line (which should, as the re matches *everything*, map all users?) <snip> certaccess /^.*$ testuser </snip> I have a user certificate, issued by the same CA as the server cert, with CN "Albrecht Dreß". Running psql on a remote client fails: <snip> albrecht@deneb:~$ psql -h dbserver -U "Albrecht Dreß" testdb psql: FATAL: certificate authentication failed for user "Albrecht Dreß" FATAL: no pg_hba.conf entry for host "172.16.61.70", user "Albrecht Dreß", database "testdb", SSL off </snip> The server log says: <snip> Albrecht Dreß@testdb LOG: no match in usermap "certaccess" for user "Albrecht Dreß" authenticated as "Albrecht Dreß" Albrecht Dreß@testdb FATAL: certificate authentication failed for user "Albrecht Dreß" Albrecht Dreß@testdb DETAIL: Connection matched pg_hba.conf line 136: " hostssl testdb all 172.16.61.0/24 cert map=certaccess" Albrecht Dreß@testdb FATAL: no pg_hba.conf entry for host "172.16.61.70", user "Albrecht Dreß", database "testdb", SSL off </snip> For me, this looks as if the certificate is accepted, but the regexp match of the CN somehow fails. Note 1: I don't have a role “Albrecht Dreß” defined. Note 2: using my “real” user name (albrecht), i.e. omitting the “-U” option above, fails with the server log message “provided user name (albrecht) and authenticated user name (Albrecht Dreß) do not match”. Any idea what I did wrong, and how I can a working cert authentication? Thanks in advance, Albrecht.
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