I installed PostgreSQL on Ubuntu, I can view psql version with command psql --version. but when I input comman sudo -i -u postgres, it shows error: 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”?
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
The error means that the Postgres server is not running. Try starting it:
I believe the service name is
postgresql
, but if that doesn’t work, try typingsudo systemctl start postgres
and pressing tab to auto-complete.Make sure that the server starts on boot: