psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

-

If we are getting error after creating database in postgres like this :-

psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

Then use following link :- 

https://stackoverflow.com/questions/42653690/psql-could-not-connect-to-server-no-such-file-or-directory-5432-error

sudo chmod 777 -R /var/run/postgresql/

Then restart the postgres:- 

sudo service postgresql restart 

or 

sudo systemctl start postgresql@9.6-main


 

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