sudo systemctl status postgresqlpsql:psql -h host_name -p port_number -U user_name -W database_name/var/log/postgresql/ on Linux.pg_hba.conf file for appropriate host entries that match your client's IP address or subnet.postgresql.conf file is set to listen on the correct interface:listen_addresses = '*' allows listening on all interfaces, or set it to a specific IP address.telnet or nc to check connectivity:telnet host_name 5432nc -zv host_name 5432sudo systemctl restart postgresql(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)



