mysql-mmm安装部署

mysql-mmm文档下载地址

http://down.51cto.com/data/339582

部署环境

操作系统：Red Hat Enterprise Linux Server release 6.1

Master1：192.168.5.73

Master2：192.168.5.76

Monitor：192.168.5.77

安装步骤

1、假设mysql Mater-Master模式已经配置成功，可以参考mysql master-slave配置文章

http://360537539.blog.51cto.com/3803422/781612

为了避免master-master AUTO_INCREMENT列值重复情况，需要在my.cnf配置中配置如下内容

 

master1：

auto_increment_increment = 2
auto_increment_offset = 1

 

master2：

auto_increment_increment = 2
auto_increment_offset = 2

有关auto_increment_increment和auto_increment_offset参考

http://blog.csdn.net/wh62592855/article/details/6726724

2、安装mysql-mmm-agent mysql-mmm-common mysql-mmm-mon，redhat和centos系统通过yum方式安装比较方便（省去了很多依赖包的安装），但是默认的centos软件仓库默认不包含这些rpm包，需要epel-release的支持。

1）安装epel-release包

#rpm -Uvh http://mirror.xfes.ru/fedora-epel/6/i386/epel-release-6-5.noarch.rpm，不同的系统版本注意选择对应的镜像位置

2）安装mysql-mmm系列包

yum install mysql-mmm* -y

3）创建mysql 用户并赋予权限

条件：

monitor user

A MySQL user with privileges REPLICATION CLIENT for MMM monitor.

agent user

A MySQL user with privileges SUPER, REPLICATION CLIENT, PROCESS for

MMM agent.

replication user

A MySQL user with privileges REPLICATION SLAVE used for replication.

运行命令

mysql>GRANT REPLICATION CLIENT ON *.* TO 'mmm_monitor'@'192.168.%' IDENTIFIED BY 'ictsoft';

mysql> GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO 'mmm_agent'@'192.168.%' IDENTIFIED BY 'ictsoft';

mysql> GRANT REPLICATION SLAVE ON *.* TO 'replication'@'192.168.%' IDENTIFIED BY 'ictsoft';

4、配置mysql-mmm

vi /etc/mysql-mmm/mmm_common.conf

active_master_role      writer

 <host default>

  cluster_interface       eth0

    pid_path                /var/run/mysql-mmm/mmm_agentd.pid

    bin_path                /usr/libexec/mysql-mmm/

    replication_user        rep

    replication_password    ictsoft

    agent_user              mmm_agent

    agent_password          ictsoft

</host>

<host db1>

    ip      192.168.5.73

    mode    master

    peer    db2

</host>
<host db2>
    ip      192.168.5.76

    mode    master

    peer    db1

</host>
<role writer>
    hosts   db1, db2

    ips     192.168.5.80

    mode    exclusive

</role>
<role reader>
    hosts   db1, db2

    ips     192.168.5.84, 192.168.5.82

    mode    balanced

</role>

192.168.5.73  192.168.5.76为anget的ip地址

192.168.5.80  192.168.5.82  192.168.5.84是3个浮动ip，192.168.5.84, 192.168.5.82对应’读’角色，192.168.5.80对应’写’角色,浮动ip会根据mysql服务的情况进行漂移，后面会详细介绍。

将配置文件拷贝到monitor和agent的响应目录下(/etc/mysql-mmm/mysql-common.conf)

修改mysql-mmm-agent.conf

vi /etc/mysql-mmm/mmm_agent.conf

include mmm_common.conf

this db1

注意此处this的值要和common中的配置相对应

修改mysql-mmm-monitor.conf

include mmm_common.conf


<monitor>

        ip                                      127.0.0.1

        pid_path                                /var/run/mmm_mond.pid

        bin_path                                /usr/lib/mysql-mmm/

        status_path                             /var/lib/misc/mmm_mond.status

        ping_ips                                192.168.5.73

</monitor>


<host default>

        monitor_user                    mmm_monitor

        monitor_password                ictsoft

</host>

debug 1

 

 

5、启动mysql-mmm-agent和mysql-mmm-monitor服务

#/etc/init.d/mysql-mmm-agent start

#/etc/init.d/mysql-mmm-monitor start

6、检测状态

monitor端 

#mmm_control show

b1(192.168.5.73) master/AWAITING_RECOVERY. Roles:

db2(192.168.5.76) master/AWAITING_RECOVERY. Roles:

对两台db做set_online操作

#mmm_control set_online db1

#mmm_control set_online db2

查看状态

#mmm_control show

db1(192.168.5.73) master/ONLINE. Roles: reader(192.168.5.82), writer(192.168.5.80)

db2(192.168.5.76) master/ONLINE. Roles: reader(192.168.5.84)

7、测试

停掉db1的mysql，在monitor端查看状态

#mmm_control show

db1(192.168.5.73) master/HARD_OFFLINE. Roles:

db2(192.168.5.76) master/ONLINE. Roles: reader(192.168.5.82), reader(192.168.5.84), writer(192.168.5.80)

发现原来在db1上的读和写角色（ip）都漂移到了db2，启动db1的mysql后角色重新分配