Re: pg_hba_lookup function to get all matching pg_hba.conf entries

Haribabu Kommi wrote:

> The trace messages that are going to print doesn't come to client until the
> connection gets successful. The traces may not useful for the clients
> to find out
> why the connection is failing. But it may be useful for administrators.
> How about the attached patch?
>
> [kommih@localhost bin]$ ./psql postgres -h ::1
> psql (9.6devel)
> Type "help" for help.
>
> postgres=#
>
> ServerLog:
> NOTICE:  Skipped 84 pg_hba line, because of host connection type.
> NOTICE:  Skipped 86 pg_hba line, because of non matching IP.

That's going to be way too noisy.  Some applications open dozens of
connections per second -- imagine a dozen NOTICEs per each connection
established.  It's going to fill any disk you install as the server log
partition ...

I can imagine worse nightmares, but this one's a pretty ugly one.

--
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services