Re: pg_isready --username seems an empty promise

On 05/19/2014 01:37 PM, Erik Rijkers wrote:
> pg_isready has --username:
>
>    -U, --username=USERNAME  user name to connect as
>
>
> so is replying when given a non-existent user not a bug?
>
> pg_isready --username=xxxx -p 6544
> /tmp:6544 - accepting connections
>
> There is no user xxxx.  (PG envvars are removed)

Per the manual page on pg_isready:

> The options --dbname and --username can be used to avoid gratuitous
> error messages in the logs, but are not necessary for proper
> functionality.

The libpq entry on PQpingParams(), which pg_isready uses, has a bit more 
details:

> It is not necessary to supply correct user name, password, or
> database name values to obtain the server status; however, if
> incorrect values are provided, the server will log a failed
> connection attempt.

BTW, I find the above PQpingParams() explanation much more clear than 
one in pg_isready. I think we should use the same text in both places.

- Heikki