Iam new in kamailio.

When I try to create the data base with kamdbctl y have the following  error

root@diogenes-Inspiron-1525:/usr/local/sbin# kamdbctl create
MySQL password for root:
INFO: test server charset
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory")
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory")
Usage: grep [OPTION]... PATTERN [FILE]...
Try 'grep --help' for more information.
/usr/local/lib/kamailio//kamctl/kamdbctl.mysql: line 111: [: =: unary operator expected
INFO: creating database kamailio ...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory")
ERROR: Creating database kamailio failed!
root@diogenes-Inspiron-1525:/usr/local/sbin# mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory")