分别在2个数据库上面添加复制slave的权限：
GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO xxx@'192.168.39.%' IDENTIFIED BY 'xxx'
Master1的配置：
server-id = 1
auto-increment-increment = 2
auto-increment-offset = 1
master-user = xxx
master-password = xxx
master-host = 192.168.39.80
#master-connect-retry = 60
replicate-do-db = common
replicate-ignore-db = mysql,information_schema
log-bin=64-bin
sync_binlog = 1
binlog-do-db=common
binlog-ignore-db = mysql,information_schema
binlog_format=mixed
Master 2 的配置：
server-id = 2
auto-increment-increment = 2
auto-increment-offset = 2
master-user = xxx
master-password = xxx
master-host = 192.168.39.81
#master-connect-retry = 60
replicate-do-db = common
replicate-ignore-db = mysql,information_schema
log-bin = beta-bin
sync_binlog = 1
binlog-do-db = common
binlog-ignore-db = mysql,information_schema
binlog_format = mixed
查看master slave IO/SQL线程状态：
master 1
mysql> show master status\G
*************************** 1. row ***************************
File: beta-bin.000005
Position: 106
Binlog_Do_DB: common
Binlog_Ignore_DB: mysql,information_schema
1 row in set (0.02 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.39.81
Master_User: jack
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: 64-bin.000006
Read_Master_Log_Pos: 20305
Relay_Log_File: BETA1-relay-bin.000021
Relay_Log_Pos: 248
Relay_Master_Log_File: 64-bin.000006
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: common
Replicate_Ignore_DB: mysql,information_schema
master 2
mysql> show master status\G
*************************** 1. row ***************************
File: 64-bin.000006
Position: 20305
Binlog_Do_DB: common
Binlog_Ignore_DB: mysql,information_schema
1 row in set (0.03 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.39.80
Master_User: jack
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: beta-bin.000005
Read_Master_Log_Pos: 106
Relay_Log_File: ubuntu64-relay-bin.000023
Relay_Log_Pos: 250
Relay_Master_Log_File: beta-bin.000005
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: common
Replicate_Ignore_DB: mysql,information_schema