It seems you may have just the postgresql package installed and not the postgresql-server package. This Linode guide may be helpful:
https://www.linode.com/docs/databases/postgresql/how-to-install-postgresql-relational-databases-on-centos-7 -B On Thu, Nov 23, 2017 at 22:28 Daulat Ram <daulat....@cyient.com> wrote: > Hi team, > > > > We are facing the below issue while logging with postgres as given below: > > > > [centos@ip-192-90-2-208 ~]$ su - postgres > > Password: > > *Last login: Thu Nov 23 16:15:45 UTC 2017 on pts/1* > > *-bash-4.2$ psql* > > *psql: could not connect to server: No such file or directory* > > * Is the server running locally and accepting* > > * connections on Unix domain socket "/tmp/.s.PGSQL.5432"?* > > -bash-4.2$ > > > > > > *OS: Centos* > > *AWS environment* > > > > Regards, > > Daulat > > ------------------------------ > > DISCLAIMER: > > This email message is for the sole use of the intended recipient(s) and > may contain confidential and privileged information. Any unauthorized > review, use, disclosure or distribution is prohibited. If you are not the > intended recipient, please contact the sender by reply email and destroy > all copies of the original message. Check all attachments for viruses > before opening them. All views or opinions presented in this e-mail are > those of the author and may not reflect the opinion of Cyient or those of > our affiliates. > -- Thanks, -B