应用于DC1 -> DC2
或者 mysql replication
DC2,接收端：
监听接口1234
nc -l 1234 | tar ixvf - 2> xtrabackup.log
root@python-develpment:/script/slave# nc -l 1234 | tar ixvf - 2> xtrabackup.log
DC1，发送端，备份端
innobackupex --defaults-file=/data/3308/my.cnf --user=root --password=123456 --stream=tar ./ | nc 192.168.134.130 1234
[root@mysql-master backup]# innobackupex --defaults-file=/data/3308/my.cnf --user=root --password=123456 --slave-info --stream=tar ./ | nc 192.168.134.130 1234
170619 16:57:07 [01] Streaming ./pcik_log_dep/t_redbag_get.frm to <STDOUT>
170619 16:57:07 [01] ...done
170619 16:57:07 [01] Streaming ./pcik_log_dep/t_trade.frm to <STDOUT>
170619 16:57:07 [01] ...done
170619 16:57:07 [01] Streaming ./pcik_log_dep/t_mail_del.frm to <STDOUT>
170619 16:57:07 [01] ...done
170619 16:57:07 Finished backing up non-InnoDB tables and files
170619 16:57:07 [00] Streaming xtrabackup_slave_info
170619 16:57:07 [00] ...done
170619 16:57:07 [00] Streaming xtrabackup_binlog_info
170619 16:57:07 [00] ...done
170619 16:57:07 Executing FLUSH NO_WRITE_TO_BINLOG ENGINE LOGS...
xtrabackup: The latest check point (for incremental): ‘370373412‘
xtrabackup: Stopping log copying thread.
.170619 16:57:07 >> log scanned up to (370373421)
170619 16:57:07 Executing UNLOCK TABLES
170619 16:57:07 All tables unlocked
170619 16:57:07 [00] Streaming ib_buffer_pool to <STDOUT>
170619 16:57:07 [00] ...done
170619 16:57:07 Backup created in directory ‘/backup‘
MySQL binlog position: filename ‘mysql-bin.000017‘, position ‘4497‘
MySQL slave binlog position: master host ‘127.0.0.1‘, filename ‘mysql-bin.000028‘, position ‘154‘
170619 16:57:07 [00] Streaming backup-my.cnf
170619 16:57:07 [00] ...done
170619 16:57:07 [00] Streaming xtrabackup_info
170619 16:57:07 [00] ...done
xtrabackup: Transaction log of lsn (370373412) to (370373421) was copied.
170619 16:57:07 completed OK!
出现completed OK! 代表备份完成
原文：http://lovexx.blog.51cto.com/131664/1939901