Hola, me aparece este error ,alguien me puede echar una mano?

root@kali:~# msfconsole
[-] Failed to connect to the database: could not connect to server: Connection refused
   Is the server running on host "localhost" (::1) and accepting
   TCP/IP connections on port 7337?
could not connect to server: Connection refused
   Is the server running on host "localhost" (127.0.0.1) and accepting
   TCP/IP connections on port 7337?

                                                 
....

msf > db_status

• postgresql selected, no connection

msf > db_connect -y /usr/share/metasploit-framework/config/database.yml

• Rebuilding the module cache in the background...

msf > db_status

• postgresql connected to msf

msf >