Re: issue with reading hostname

On 4/22/24 14:37, Atul Kumar wrote:
> Can we edit the socket to change the hostname in it ?

On Ubuntu 22.04 install, given:

srwxrwxrwx 1 postgres postgres 0 Apr 22 14:01 .s.PGSQL.5432=
-rw------- 1 postgres postgres 68 Apr 22 14:01 .s.PGSQL.5432.lock

The contents of .s.PGSQL.5432.lock(the file that indicates a Postgres
instance has a lock on the socket) are:

862
/var/lib/postgresql/15/main
1713795311
5432
/var/run/postgresql

There is no hostname to be changed as you are working with a local socket.

>
> Regards.
>
> On Tue, Apr 23, 2024 at 2:41 AM Ron Johnson <ronljohnsonjr(at)gmail(dot)com
> <mailto:ronljohnsonjr(at)gmail(dot)com>> wrote:
>
> On Mon, Apr 22, 2024 at 4:14 PM Atul Kumar <akumar14871(at)gmail(dot)com
> <mailto:akumar14871(at)gmail(dot)com>> wrote:
>
> Hi,
>
> I have postgresql  version 15 running on centos7.
>
> I have below query that reads hostname from /tmp directory:
>
> psql postgres -A -t -p 5432 -h /tmp/ -c 'SELECT
> pg_is_in_recovery();'
>
>
> If you installed from the PGDG repository (possibly also the CENTOS
> repos, but I'm not sure), then the domain socket also lives in :
> /var/run/postgresql
>
> * I find that more expressive than /tmp.
> * No need to specify the host when using sockets.
> * Using a socket name makes parameterizing the hostname easier in
> scripts.
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com