MySQL5.7多源复制的实验

环境：

node1: 192.168.2.171 主库1

node3: 192.168.2.170 主库2

node2: 192.168.2.172 归档用的从库

1、node2上需要配置复制过滤掉mysql库：

replicate_wild_ignore_table=mysql.% 

replicate_wild_ignore_table=test.%

### 5.7上可以直接使用 stop slave; CHANGE REPLICATION FILTER REPLICATE_WILD_IGNORE_TABLE = ('mysql.%','test.%');  start salve;动态修改复制过滤库。

2、先将node1、node3上的备份mysqldump -uxx -pxx -q --single-transaction --master-data=2 导入到node2上。

3、在node2上配置主从复制

node2上执行：

change master to 

  master_host='192.168.2.171',

  master_user='rpl',

  master_password='rpl',

  master_port=3306,

  master_log_file='mysql-bin.000001',

  master_log_pos=4 for channel 'master-1';

change master to 

  master_host='192.168.2.170',

  master_user='rpl',

  master_password='rpl',

  master_port=3306,

  master_log_file='mysql-bin.000001',

  master_log_pos=12 for channel 'master-2';

启动复制：

start slave for channel 'master-1';

start slave for channel 'master-2';

查看状态：

show slave status for channel 'master-1'\G

show slave status for channel 'master-2'\G

停止：

stop slave for channel 'master-1';

stop slave for channel 'master-2';

清空同步信息和日志：

reset slave for channel 'master-1';

reset slave for channel 'master-2';

刷下relaylog：

flush relay logs for channel 'master-1';

flush relay logs for channel 'master-2';