Install Mysql MMM On Redhat6.3

哈哈，年底最后一篇文章。写完今天下午放假。

MMM官方介绍：
MMM (Multi-Master Replication Manager for MySQL) is a set of flexible scripts to perform monitoring/failover and management of MySQL master-master replication configurations (with only one node writable at any time).
The toolset also has the ability to read balance standard master/slave configurations with any number of slaves, so you can use it to move virtual IP addresses around a group of servers depending on whether they are behind in replication.
The current version of this software is stable, but the authors would appreciate any comments, suggestions, bug reports about this version to make it even better. Current version 2.0 development is led by Pascal Hofmann. If you require support, advice or assistance with deployment, please contact Percona or Open Query.

安装环境：
一台监控，两台mysql server互为主从

Monitor:OS:redhat6.3Name:zbdba1IP:192.168.56.170Mysql Server1:OS:redhat6.3Name:zbdba2IP:192.168.56.171Mysql Server2:OS:redhat6.3Name:zbdba3IP:192.168.56.172

1、安装MMM监控
2、安装MMM agent
3、安装mysql
4、配置互为主从
5、创建用户
6、配置
7、启动MMM
8、测试

1、安装MMM监控
这里安装epel的yum源，但是安装的是任然缺少以下几个包：
rpm -ivh ftp://195.220.108.108/linux/dag/redhat/el6/en/x86_64/extras/RPMS/perl-Algorithm-Diff-1.1902-1.el6.rfx.noarch.rpm
rpm -ivh http://pkgs.repoforge.org/perl-Email-Date-Format/perl-Email-Date-Format-1.002-1.el6.rfx.noarch.rpm


本地源：yum install rrdtool*


rpm -ivh rrdtool-perl-1.3.8-6.el6.x86_64.rpm


最后：
yum install mysql-mmm*


 
2、安装MMM agent
跟第一步前面都是一样的
yum -y install mysql-mmm-agent




3、安装mysql
4、配置互为主从
这两步就不详细说明了。

5、创建用户
在任意一台数据库中：

GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO 'mmm_agent'@'192.168.56.%'   IDENTIFIED BY 'mysql';GRANT REPLICATION CLIENT ON *.* TO 'mmm_monitor'@'192.168.56.%' IDENTIFIED BY 'mysql';

6、配置

cat /etc/mysql-mmm/mmm_common.conf[root@zbdba1 mysql-mmm]# cat /etc/mysql-mmm/mmm_common.confactive_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        replicant    replication_password    mysql    agent_user              mmm_agent    agent_password          mysql</host><host db1>    ip      192.168.56.171    mode    master    peer    db2</host><host db2>    ip      192.168.56.172    mode    master    peer    db1</host>#<host db3>#    ip      192.168.100.51#    mode    slave#</host><role writer>    hosts   db1, db2    ips     192.168.56.173    mode    exclusive</role><role reader>    hosts   db1, db2    ips     192.168.56.174, 192.168.56.175    mode    balanced</role>在每个节点都需要配置以上内容修改agent节点：[root@zbdba2 mysql-mmm]# cat mmm_agent.confinclude mmm_common.conf# The 'this' variable refers to this[root@zbdba3 mysql-mmm]# cat mmm_agent.confinclude 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

7、启动MMM

启动agent节点：
[root@zbdba2 default]# /etc/init.d/mysql-mmm-agent start
 
[root@zbdba3 default]# /etc/init.d/mysql-mmm-agent start


启动监控节点：
[root@zbdba1 default]#/etc/init.d/mysql-mmm-monitor start

查看状态：

[root@zbdba1 mysql-mmm]# mmm_control show  db1(192.168.56.171) master/ONLINE. Roles: reader(192.168.56.175), writer(192.168.56.173)  db2(192.168.56.172) master/ONLINE. Roles: reader(192.168.56.174)[root@zbdba2 default]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:70:d2:ad brd ff:ff:ff:ff:ff:ff    inet 192.168.56.171/24 brd 192.168.56.255 scope global eth0    inet 192.168.56.175/32 scope global eth0    inet 192.168.56.173/32 scope global eth0    inet6 fe80::a00:27ff:fe70:d2ad/64 scope link       valid_lft forever preferred_lft forever3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:57:10:81 brd ff:ff:ff:ff:ff:ff    inet 192.168.253.111/24 brd 192.168.253.255 scope global eth1    inet6 fe80::a00:27ff:fe57:1081/64 scope link       valid_lft forever preferred_lft forever[root@zbdba3 mysql-mmm]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:39:b0:e7 brd ff:ff:ff:ff:ff:ff    inet 192.168.56.172/24 brd 192.168.56.255 scope global eth0    inet 192.168.56.174/32 scope global eth0    inet6 fe80::a00:27ff:fe39:b0e7/64 scope link       valid_lft forever preferred_lft forever3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:08:3b:71 brd ff:ff:ff:ff:ff:ff    inet 192.168.253.112/24 brd 192.168.253.255 scope global eth1    inet6 fe80::a00:27ff:fe08:3b71/64 scope link       valid_lft forever preferred_lft forever

发现zbdba2成为读节点，zbdba3为写节点




8、测试
关闭zbdba2 的mysql
[root@zbdba2 default]# service mysql stop
Shutting down MySQL... SUCCESS!


再次查看monitor状态：

[root@zbdba1 mysql-mmm]# mmm_control show  db1(192.168.56.171) master/HARD_OFFLINE. Roles:  db2(192.168.56.172) master/ONLINE. Roles: reader(192.168.56.174), reader(192.168.56.175), writer(192.168.56.173)[root@zbdba3 mysql-mmm]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:39:b0:e7 brd ff:ff:ff:ff:ff:ff    inet 192.168.56.172/24 brd 192.168.56.255 scope global eth0    inet 192.168.56.174/32 scope global eth0    inet 192.168.56.175/32 scope global eth0    inet 192.168.56.173/32 scope global eth0    inet6 fe80::a00:27ff:fe39:b0e7/64 scope link       valid_lft forever preferred_lft forever3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 08:00:27:08:3b:71 brd ff:ff:ff:ff:ff:ff    inet 192.168.253.112/24 brd 192.168.253.255 scope global eth1    inet6 fe80::a00:27ff:fe08:3b71/64 scope link       valid_lft forever preferred_lft forever

发现所有VIP都漂移到zbdba3上了。