[pp.int.general] mysql error in website of pp.international

[Enrique Herrera Noya]

i read


Unable to connect to database server

This either means that the username and password information in your
settings.php file is incorrect or we can't contact the MySQL database
server. This could mean your hosting provider's database server is down.

The MySQL error was: Can't connect to local MySQL server through socket
'/var/run/mysqld/mysqld.sock' (2).

Currently, the username is ppi and the database server is localhost.

    * Are you sure you have the correct username and password?
    * Are you sure that you have typed the correct hostname?
    * Are you sure that the database server is running?

For more help, see the Installation and upgrading handbook. If you are
unsure what these terms mean you should probably contact your hosting
provider.