MySQL-MMM集群部署
MMM(Master-Master replication managerfor Mysql，Mysql主主复制管理器)是一套灵活的脚本程序，基于perl实现，用来对mysql replication进行监控和故障迁移，并能管理mysql Master-Master复制的配置(同一时间只有一个节点是可写的)。
mmm_mond：监控进程，负责所有的监控工作，决定和处理所有节点角色活动。此脚本需要在监管机上运行。
mmm_agentd：运行在每个mysql服务器上的代理进程，完成监控的探针工作和执行简单的远端服务设置。此脚本需要在被监管机上运行。
mmm_control：一个简单的脚本，提供管理mmm_mond进程的命令。
实验拓扑图
实验环境准备
五台虚拟机器 IP 主机名分别为：
192.168.4.10 主机名：mysql10
192.168.4.11 主机名：mysql11
192.168.4.12 主机名：mysql12
192.168.4.13 主机名：mysql13
192.168.4.120 主机名：client120
每台虚拟机关闭防火墙和SELinux的限制 以方便实验
10-13 安装mysql数据库服务
一，配置主从同步结构
1.1 配置主主结构 10 / 11
共同配置
虚拟机10上：用户授权 启动binlog日志 重启数据库服务 管理员登录指定主库信息
mysql> grant replication slave on *.* to [email protected]"%" identified by '123456';
[[email protected] ~]# vim /etc/my.cnf
[mysqld]
server_id=10
log-bin=master10
binlog_format="mixed"
[[email protected] ~]# systemctl restart mysqld
mysql> show master status;
| master10.000001 | 154 |
mysql> change master to master_host="192.168.4.11", master_user="slaveuser",master_password="123456",master_log_file="master11.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Relay_Master_Log_File: master13.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
虚拟机11上：用户授权 启用binlog日志 并允许级联复制 重启数据库服务 管理员登录指定主库信息
mysql> grant replication slave on *.* to [email protected]"%" identified by '123456';
[[email protected] mysql]# vim /etc/my.cnf
[mysqld]
server_id=11
log-bin=master11
binlog_format="mixed"
log_slave_updates
[[email protected] mysql]# systemctl stop mysqld
[[email protected] mysql]# systemctl start mysqld
mysql> show master status;
| master11.000001 | 154 |
mysql> change master to master_host="192.168.4.10", master_user="slaveuser",master_password="123456",master_log_file="master10.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Relay_Master_Log_File: master10.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
配置一主多从结构（把12，13分别配置11的从库）
虚拟机12上
[[email protected] ~]# vim /etc/my.cnf
[mysqld]
server_id=12
[[email protected] ~]# systemctl stop mysqld
[[email protected] ~]# systemctl start mysqld
mysql> change master to master_host="192.168.4.11", master_user="slaveuser",master_password="123456",master_log_file="master11.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
虚拟机13上
[[email protected] ~]#vim /etc/my.cnf
[mysqld]
server_id=13
[[email protected] ~]#systemctl stop mysqld
[[email protected] ~]#systemctl start mysqld
mysql> change master to master_host="192.168.4.11", master_user="slaveuser",master_password="123456",master_log_file="master11.000001",master_log_pos=154;
mysql> start slave;
mysql> show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
虚拟机10上：
在10主机上添加访问用户guser 能够在其他3台主机上也有相同的授权用户
mysql> create database gamedb;
mysql> grant all on gamedb.* to [email protected]"%" identified by "123456";
在客户端245 使用授权用户guser 连接10服务器 产生的新数据放在其他3台主机上也有
[[email protected] 桌面]# mysql -h192.168.4.10 -uguser -p123456
MySQL [(none)]> create table gamedb.a(id int);
MySQL [(none)]> insert into gamedb.a values(100);
MySQL [(none)]> insert into gamedb.a values(100);
MySQL [(none)]> insert into gamedb.a values(100);
二，配置mysql-mmm
mysql-mmm介绍：
监控服务： 运行在管理节点上 用来监控数据节点
代理服务： 运行在数据节点 用来提供系统给监控主机
1)在所有主机上安装mysql-mmm软件 （10-13,120）
yum -y install perl-*
tar -zxvf mysql-mmm.zip
unzip mysql-mmm.zip
cd mysql-mmm/
tar -zxvf mysql-mmm-2.2.1.tar.gz
cd mysql-mmm-2.2.1/
make install
ls /etc/mysql-mmm/
mmm_agent.conf mmm_common.conf mmm_mon.conf mmm_tools.conf
2)修改配置文件
a.修改数据节点代理服务配置文件（10 11 12 13）
[[email protected] ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db10 #自定义名称
[[email protected] ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db11
[[email protected] ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db12
[[email protected] ~]# vim /etc/mysql-mmm/mmm_agent.conf
include mmm_common.conf
this db13
b.修改管理节点监控服务的配置文件（120）
[[email protected] ~]# vim /etc/mysql-mmm/mmm_mon.conf
include mmm_common.conf
<monitor>
ip 192.168.4.120
pid_path /var/run/mmm_mond.pid
bin_path /usr/lib/mysql-mmm/
status_path /var/lib/misc/mmm_mond.status
ping_ips 192.168.4.10, 192.168.4.11, 192.168.4.12, 192.168.4.13
</monitor>
<host default>
monitor_user monitor #监视用户名
monitor_password 123456 #监视用户密码
</host>
debug 0 0不显示调试信息 1显示调试信息
c.修改公共文件(10,11,12,13,120)
vim /etc/mysql-mmm/mmm_common.conf
10 replication_user slaveuser #代理用户
11 replication_password 123456
12
13 agent_user agent #数据库
14 agent_password 123456
17 <host db10> #修改四台服务器
18 ip 192.168.4.10
19 mode master
20 peer db11
21 </host>
22
23 <host db11>
24 ip 192.168.4.11
25 mode master
26 peer db10
27 </host>
28
29 <host db12>
30 ip 192.168.4.12
31 mode slave
32 </host>
33
34 <host db13>
35 ip 192.168.4.13
36 mode slave
37 </host>
39 <role writer>
40 hosts db10, db11
41 ips 192.168.4.100
42 mode exclusive
43 </role>
44
45 <role reader>
46 hosts db12, db13
47 ips 192.168.4.102, 192.168.4.105
48 mode balanced
49 </role>
d.根据配置文件的设置，在数据节点上添加对应的授权用户
monitor
agent
3)在虚拟机10上 授权
mysql> grant replication client on *.* to [email protected]"%" identified by "123456";
mysql> grant replication client,process,super on *.* to [email protected]"%" identified by "123456";
4)其他三台测试
mysql> select user,host from mysql.user where user in ('agent','monitor');
三,启动服务
a.启动数据节点主机代理服务(10-13)：安装服务运行依赖软件包 安装获取vip地址软件包 启动服务
cd /root/mysql-mmm/
tar -zxf Algorithm-Diff-1.1902.tar.gz
cd Algorithm-Diff-1.1902/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
tar -zxf Proc-Daemon-0.03.tar.gz
cd Proc-Daemon-0.03/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
rpm -ivh --nodeps perl-Log-Log4perl-1.26-1.el6.rf.noarch.rpm
/etc/init.d/mysql-mmm-agent start
/etc/init.d/mysql-mmm-agent status
netstat -pantu | grep mmm
netstat -pantu | grep :9989
tcp 0 0 192.168.4.11:9989 0.0.0.0:* LISTEN 10059/mmm_agentd
yum -y install gcc gcc-c++
cd /root/mysql-mmm/
gunzip Net-ARP-1.0.8.tgz
tar -xf Net-ARP-1.0.8.tar
cd Net-ARP-1.0.8/
perl Makefile.PL
make
make install
b.启动管理节点主机监控服务 (120)：安装服务运行软件包 启动服务
cd /root/mysql-mmm/
tar -zxf Algorithm-Diff-1.1902.tar.gz
cd Algorithm-Diff-1.1902/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
tar -zxf Proc-Daemon-0.03.tar.gz
cd Proc-Daemon-0.03/
perl Makefile.PL
make
make install
cd /root/mysql-mmm/
rpm -ivh --nodeps perl-Log-Log4perl-1.26-1.el6.rf.noarch.rpm
/etc/init.d/mysql-mmm-monitor start
/etc/init.d/mysql-mmm-monitor status
netstat -pantu | grep mmm_mond
netstat -pantu | grep 9988
tcp 0 0 192.168.4.120:9988 0.0.0.0:* LISTEN 30047/mmm_mond
四,验证mysql-mmm的配置
a 查看数据库节点上的数据库服务是运行的
IO线程和SQ线程 是否OK
[[email protected] ~]# mysql -uroot -p123456 -e"show slave status\G;" | grep -i yes
mysql: [Warning] Using a password on the command line interface can be insecure.
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
b.在监控服务器本机登录管理界面查看，查看数据库服务状态
[[email protected] ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/AWAITING_RECOVERY. Roles:
db11(192.168.4.11) master/AWAITING_RECOVERY. Roles:
db12(192.168.4.12) slave/AWAITING_RECOVERY. Roles:
db13(192.168.4.13) slave/AWAITING_RECOVERY. Roles:
[[email protected] ~]# mmm_control set_online db10
[[email protected] ~]# mmm_control set_online db11
[[email protected] ~]# mmm_control set_online db12
[[email protected] ~]# mmm_control set_online db13
[[email protected] ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/ONLINE. Roles: writer(192.168.4.100)
db11(192.168.4.11) master/ONLINE. Roles:
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
c.在数据接待年本机查看是否获取到vip地址
[[email protected] ~]# ping -c 2 192.168.4.100
PING 192.168.4.100 (192.168.4.100) 56(84) bytes of data.
64 bytes from 192.168.4.100: icmp_seq=1 ttl=64 time=0.367 ms
64 bytes from 192.168.4.100: icmp_seq=2 ttl=64 time=0.383 ms
[[email protected] Net-ARP-1.0.8]# ip addr show | grep 192.168.4.
inet 192.168.4.10/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.100/32 scope global eth0
[[email protected] ~]# ip addr show | grep 192.168.4.
inet 192.168.4.12/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.105/32 scope global eth0
[[email protected] ~]# ip addr show | grep 192.168.4.
inet 192.168.4.13/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.102/32 scope global eth0
d.客户端连接VIP访问数据库服务
[[email protected] 桌面]# mysql -h192.168.4.100 -uguser -p123456
MySQL [(none)]> select @@hostname;
+---------------------+
| @@hostname |
+---------------------+
| mysql10 |
+---------------------+
模拟 虚拟机10挂掉
[[email protected] ~]# systemctl stop mysqld
[[email protected] ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/HARD_OFFLINE. Roles:
db11(192.168.4.11) master/ONLINE. Roles: writer(192.168.4.100)
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
[[email protected] ~]# ip addr show | grep 192.168.4
inet 192.168.4.11/24 brd 192.168.4.255 scope global eth0
inet 192.168.4.100/32 scope global eth0
MySQL [(none)]> select @@hostname;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 1900
Current database: *** NONE ***
+---------------------+
| @@hostname |
+---------------------+
| mysql11 |
+---------------------+
1 row in set (0.00 sec)
模拟 虚拟机10 故障修好了
[[email protected] ~]# systemctl start mysqld
[[email protected] ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/AWAITING_RECOVERY. Roles
db11(192.168.4.11) master/ONLINE. Roles: writer(192.168.4.100):
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
[[email protected] ~]# mmm_control set_online db10
[[email protected] ~]# mmm_control show
defined(@array) is deprecated at /usr/share/perl5/vendor_perl/Log/Log4perl/Config.pm line 863.
(Maybe you should just omit the defined()?)
db10(192.168.4.10) master/ONLINE. Roles:
db11(192.168.4.11) master/ONLINE. Roles: writer(192.168.4.100)
db12(192.168.4.12) slave/ONLINE. Roles: reader(192.168.4.105)
db13(192.168.4.13) slave/ONLINE. Roles: reader(192.168.4.102)
10不会立即占用VIP地址 当11 出现故障时 10 会重新获得VIP地址
原文地址：http://blog.51cto.com/13558754/2057541