MMM（Multi-MasterReplicationManagerforMySQL）是基于双Master结构，后面接N台Slave安装很简单，官网提供了很详细的安装文档：http://mysql-mmm.org/mmm2:guide
安装很简单，香港虚拟主机，官网提供了很详细的安装文档：
:guide
3台环境做测试
服务都起来后，状态如下：
[root@M1 mysql-mmm]# mmm_control show
M2(192.168.8.26) master/ONLINE. Roles:
slave1(192.168.8.27) slave/ONLINE. Roles: reader(192.168.8.52)
[root@M1 mysql-mmm]# mmm_control show
M1(192.168.8.25) master/HARD_OFFLINE. Roles:
M2(192.168.8.26) master/ONLINE. Roles: writer(192.168.8.51)
slave1(192.168.8.27) slave/ONLINE. Roles: reader(192.168.8.52)
======================================================
[root@M1 mysql-mmm]# mmm_control show
M1(192.168.8.25) master/ONLINE. Roles:
M2(192.168.8.26) master/ONLINE. Roles: writer(192.168.8.51)
slave1(192.168.8.27) slave/ONLINE. Roles: reader(192.168.8.52)
======================================================
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
[root@M1 mysql-mmm]# mmm_control show
M1(192.168.8.25) master/ONLINE. Roles: reader(192.168.8.52)
M2(192.168.8.26) master/ONLINE. Roles: writer(192.168.8.51)
slave1(192.168.8.27) slave/REPLICATION_FAIL. Roles:
======================================================
[root@M1 mysql-mmm]# mmm_control show
M1(192.168.8.25) master/REPLICATION_FAIL. Roles:
M2(192.168.8.26) master/ONLINE. Roles: reader(192.168.8.52), writer(192.168.8.51)
slave1(192.168.8.27) slave/REPLICATION_FAIL. Roles:
=========================================================
[root@M1 mysql-mmm]# mmm_control show
M1(192.168.8.25) master/REPLICATION_FAIL. Roles:
M2(192.168.8.26) master/ONLINE. Roles: writer(192.168.8.51)
slave1(192.168.8.27) slave/ONLINE. Roles: reader(192.168.8.52)
本文出自 “贺春旸的技术专栏” 博客，香港服务器，请务必保留此出处
，香港虚拟主机