mysql-mmm安裝部署

mysql-mmm文檔下載地址

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

部署環境

操作系統：Red Hat Enterprise Linux Server release 6.1

Master1：192.168.5.73

Master2：192.168.5.76

Monitor：192.168.5.77

安裝步驟

1、假設mysql Mater-Master模式已經配置成功，可以參考mysql master-slave配置文章

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

爲了避免master-master AUTO_INCREMENT列值重複情況，需要在my.cnf配置中配置如下內容

 

master1：

auto_increment_increment = 2
auto_increment_offset = 1

 

master2：

auto_increment_increment = 2
auto_increment_offset = 2

有關auto_increment_increment和auto_increment_offset參考

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

2、安裝mysql-mmm-agent mysql-mmm-common mysql-mmm-mon，redhat和centos系統通過yum方式安裝比較方便（省去了很多依賴包的安裝），但是默認的centos軟件倉庫默認不包含這些rpm包，需要epel-release的支持。

1）安裝epel-release包

#rpm -Uvh http://mirror.xfes.ru/fedora-epel/6/i386/epel-release-6-5.noarch.rpm，不同的系統版本注意選擇對應的鏡像位置

2）安裝mysql-mmm系列包

yum install mysql-mmm* -y

3）創建mysql 用戶並賦予權限

條件：

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.

運行命令

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爲anget的ip地址

192.168.5.80  192.168.5.82  192.168.5.84是3個浮動ip，192.168.5.84, 192.168.5.82對應’讀’角色，192.168.5.80對應’寫’角色,浮動ip會根據mysql服務的情況進行漂移，後面會詳細介紹。

將配置文件拷貝到monitor和agent的響應目錄下(/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

注意此處this的值要和common中的配置相對應

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、啓動mysql-mmm-agent和mysql-mmm-monitor服務

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

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

6、檢測狀態

monitor端 

#mmm_control show

b1(192.168.5.73) master/AWAITING_RECOVERY. Roles:

db2(192.168.5.76) master/AWAITING_RECOVERY. Roles:

對兩臺db做set_online操作

#mmm_control set_online db1

#mmm_control set_online db2

查看狀態

#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、測試

停掉db1的mysql，在monitor端查看狀態

#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)

發現原來在db1上的讀和寫角色（ip）都漂移到了db2，啓動db1的mysql后角色重新分配