I mean, Once I change the hostname then how will the socket read the new hostname ? Does it require a postgres service restart ?
On Tue, Apr 23, 2024 at 3:19 AM Adrian Klaver <adrian.kla...@aklaver.com> 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 <ronljohnso...@gmail.com > > <mailto:ronljohnso...@gmail.com>> wrote: > > > > On Mon, Apr 22, 2024 at 4:14 PM Atul Kumar <akumar14...@gmail.com > > <mailto:akumar14...@gmail.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.kla...@aklaver.com > >
