Big Sorry, folks: last post showed me my mistake.
Entering the RIGHT db host line solved my prob.
BBDB_HOST line in config.php:
define(‘DB_HOST’, $_ENV{DATABASE_SERVER});
Warning info:
Warning: constant() [function.constant]: Couldn’t find constant BBDB_HOST in /mnt/…/html/bb-includes/db.php on line 61
Warning: mysql_get_server_info() [function.mysql-get-server-info]: Can’t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock’ (2) in /mnt/…/html/bb-includes/db.php on line 73
Warning: mysql_get_server_info() [function.mysql-get-server-info]: A link to the server could not be established in /mnt/…/html/bb-includes/db.php on line 73
Cannot select DB.