CentOS搭建MysqlMMM高可用架构 - 数据库编程

ax_allowed_packet = 16M socket=/data/mysql/mysql.sock [mysql] no-auto-rehash socket=/data/mysql/mysql.sock

3. 在db1和db2 上分别建立复制，监控用户

    GRANT REPLICATION CLIENT                 ON *.* TO 'mmm_monitor'@'192.168.0.136' IDENTIFIED BY 'monitor';  
    GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO 'mmm_agent'@'192.168.0.%'   IDENTIFIED BY 'agent';  
    GRANT REPLICATION SLAVE                  ON *.* TO 'replication'@'192.168.0.%' IDENTIFIED BY 'replication';

4. 把db1和db2互相设置成master和slave

4.1 在db1上执行，mysql命令

CHANGE MASTER TO master_host='192.168.0.137', master_port=3306, master_user='replication',master_password='replication', master_log_file='mysql-bin.000006', master_log_pos=106;
注意：
html">master_log_file和master_log_pos的值通过如下命令察看
在db2上执行如下mysql命令 show master status
 
 4.2 在db2上执行，mysql命令 
 CHANGE MASTER TO master_host='192.168.0.135', master_port=3306, master_user='replication',master_password='replication', master_log_file='mysql-bin.000006', master_log_pos=106;
注意：
master_log_file和master_log_pos的值通过如下命令察看
在db1上执行如下mysql命令 show master status  
 5. 在db1和db2上安装mysql-mmm-agent 
 yum install mysql-mmm-agent* 
 6. 在monitor上安装mysql-mmm-monitor 
 yum install mysql-mmm-monitor* 
 7. 修改配置文件 
 在db1，db2和monitor上修改 
 /etc/mysql-mmm/mmm_common.conf，修改内容如下 
 active_master_role      writer


    cluster_interface       eth0
    pid_path                /var/run/mysql-mmm/mmm_agentd.pid
    bin_path                /usr/libexec/mysql-mmm/
    replication_user        replication
    replication_password    replication
    agent_user              mmm_agent
    agent_password          agent



    ip      192.168.0.135
    mode    master
    peer    db2



    ip      192.168.0.137
    mode    master
   peer    db1



    hosts   db1,db2
    ips     192.168.0.138
    mode    exclusive



    hosts   db1,db2
    ips     192.168.0.139,192.168.0.140
    mode    balanced

 修改配置文件 
 /etc/mysql-mmm/mmm_agent.conf 
 db1上的内容如下





 
 include mmm_common.conf

# The 'this' variable refers to this server.  Proper operation requires 
# that 'this' server (db1 by default), as well as all other servers, have the 
# proper IP addresses set in mmm_common.conf.
this db1 db2上的内容如下 
 include mmm_common.conf

# The 'this' variable refers to this server.  Proper operation requires 
# that 'this' server (db1 by default), as well as all other servers, have the 
# proper IP addresses set in mmm_common.conf.
this db2 
 修改配置monitor文件 
 /etc/mysql-mmm/mmm_mon.conf，内容如下 
 include mmm_common.conf


    ip                  192.168.0.136
    pid_path            /var/run/mysql-mmm/mmm_mond.pid
    bin_path            /usr/libexec/mysql-mmm
    status_path         /var/lib/mysql-mmm/mmm_mond.status
    ping_ips            192.168.0.135,192.168.0.137
    auto_set_online     60

    # The kill_host_bin does not exist by default, though the monitor will
    # throw a warning about it missing.  See the section 5.10 "Kill Host
    # Functionality" in the PDF documentation.
    #
    # kill_host_bin     /usr/libexec/mysql-mmm/monitor/kill_host
    #



    monitor_user        mmm_monitor
    monitor_password    monitor


debug 0
 
 8.在db1，db2上启动agent 
   
     # cd /etc/init.d/  
    # chkconfig mysql-mmm-agent on  
    # service mysql-mmm-agent start   
 9. 在monitor上启动monitor 
     # cd /etc/init.d/  
    # chkconfig mysql-mmm-monitor on  
    # service mysql-mmm-monitor start   
 10. 在monitor上察看 
 mmm_control -show status 
 10.2 把一台机器上线 
 mmm_control set_online db1 
 10.3 试验 
 把db1上的mysql停掉 service mysqld stop 
 察看状态mmm_control -show status，db1上的写ip应该飘到db2上 
 参考 
 http://blog.csdn.net/

CentOS搭建MysqlMMM高可用架构(二)