MySQL中的MMM集群部署是怎样的

MySQL中的MMM集群部署是怎样的，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

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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 slaveuser@"%" identified by '123456';

[root@mysql10 ~]# vim /etc/my.cnf

[mysqld]

server_id=10

log-bin=master10

binlog_format="mixed"

[root@mysql10 ~]# 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 slaveuser@"%" identified by '123456';

[root@mysql11 mysql]# vim /etc/my.cnf

[mysqld]

server_id=11

log-bin=master11

binlog_format="mixed"

log_slave_updates

[root@mysql11 mysql]# systemctl stop mysqld

[root@mysql11 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

[root@mysql12 ~]# vim /etc/my.cnf

[mysqld]

server_id=12

[root@mysql12 ~]# systemctl stop mysqld

[root@mysql12 ~]# 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

[root@mysql13 ~]#vim /etc/my.cnf

[mysqld]

server_id=13

[root@mysql13 ~]#systemctl stop mysqld

[root@mysql13 ~]#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 guser@"%" 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

[root@room1pc32 桌面]# mysql -h292.168.4.10 -uguser -p123456

MySQL [(none)]> create table gamedb.a(id int);

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）

[root@mysql10 ~]# vim /etc/mysql-mmm/mmm_agent.conf

include mmm_common.conf

this db10#自定义名称

[root@mysql11 ~]# vim /etc/mysql-mmm/mmm_agent.conf

include mmm_common.conf

this db11

[root@mysql12 ~]# vim /etc/mysql-mmm/mmm_agent.conf

include mmm_common.conf

this db12

[root@mysql13 ~]# 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）

[root@client120 ~]# vim /etc/mysql-mmm/mmm_mon.conf

include mmm_common.conf

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_user monitor#监视用户名

monitor_password 123456#监视用户密码

debug 00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

13 agent_user agent#数据库

14 agent_password 123456

17 #修改四台服务器

18 ip 192.168.4.10

19 mode master

20 peer db11

24 ip 192.168.4.11

25 mode master

26 peer db10

30 ip 192.168.4.12

31 mode slave

35 ip 192.168.4.13

36 mode slave

40 hosts db10, db11

41 ips 192.168.4.100

42 mode exclusive

46 hosts db12, db13

47 ips 192.168.4.102, 192.168.4.105

48 mode balanced

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 monitor@"%" identified by "123456";

mysql> grant replication client,process,super on *.* to agent@"%" 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

[root@mysql12 ~]# 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

[root@client120 ~]# 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:

[root@client120 ~]# mmm_control set_online db10

[root@client120 ~]# mmm_control set_online db11

[root@client120 ~]# mmm_control set_online db12

[root@client120 ~]# mmm_control set_online db13

[root@client120 ~]# 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

[root@client120 ~]# 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

[root@mysql10 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

[root@mysql12 ~]# 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

[root@mysql13 ~]# 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

[root@room1pc32 桌面]# mysql -h292.168.4.100 -uguser -p123456

MySQL [(none)]> select @@hostname;

+---------------------+

| @@hostname |

+---------------------+

| mysql10 |

+---------------------+

模拟虚拟机10挂掉

[root@mysql10 ~]# systemctl stop mysqld

[root@client120 ~]# 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)

[root@mysql13 ~]# 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

[root@mysql10 ~]# systemctl start mysqld

[root@client120 ~]# 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)

[root@client120 ~]# mmm_control set_online db10

[root@client120 ~]# 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

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