On 4/22/24 14:54, Atul Kumar wrote:
I mean, Once I change the hostname then how will the socket read the new hostname ? Does it require a postgres service restart ?
The host name of the machine?
On Tue, Apr 23, 2024 at 3:19 AM Adrian Klaver <adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>> wrote: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@xxxxxxxxx <mailto:ronljohnsonjr@xxxxxxxxx> > <mailto:ronljohnsonjr@xxxxxxxxx <mailto:ronljohnsonjr@xxxxxxxxx>>> wrote: > > On Mon, Apr 22, 2024 at 4:14 PM Atul Kumar <akumar14871@xxxxxxxxx <mailto:akumar14871@xxxxxxxxx> > <mailto:akumar14871@xxxxxxxxx <mailto:akumar14871@xxxxxxxxx>>> 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 Klaveradrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>
-- Adrian Klaver adrian.klaver@xxxxxxxxxxx
