george@db-pxc-1 [~] [17:50] sudo innobackupex --user=root  --password=secret --host=127.0.0.1  ~/Data
160830 17:50:34 innobackupex: Starting the backup operation

IMPORTANT: Please check that the backup run completes successfully.
           At the end of a successful backup run innobackupex
           prints "completed OK!".

160830 17:50:35  version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;host=127.0.0.1;port=3306' as 'kkuser'  (using password: YES).
Failed to connect to MySQL server: DBI connect(';mysql_read_default_group=xtrabackup;host=127.0.0.1;port=3306','root',...) failed: Access denied for user 'root'@'127.0.0.1' (using password: YES) at - line 1314
160830 17:50:35 Connecting to MySQL server host: 127.0.0.1, user: root, password: set, port: 3306, socket: (null)
Failed to connect to MySQL server: Access denied for user 'root'@'127.0.0.1' (using password: YES).
george@db-pxc-1 [~] [17:50]