mysql主主复制+主从复制+读写分离+mmm高可用群集
mysql主主复制+主从复制+读写分离+mmm高可用群集配置
CentOS 6.5安装mysql5.7.18 #这里只展示一台的安装过程，另几台一样操作
实验环境：
Mysql主1:172.16.16.80
Mysql主2:172.16.16.100
Mysql副1:172.16.16.60
Mysql副2:172.16.16.70
读写分离及mmm代理服务器：172.16.16.90
下载地址：
https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz
1、下载，解压，并创建软链接
[root@kgc1 ~]#
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz
[root@kgc1 ~]# tar xf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz -C /usr/src //解压到usr/src文件下
[root@kgc1 ~]#cd /usr/src
[root@kgc1 ~]#mv mysql-5.7.18-linux-glibc2.5-x86_64/ mysql 改名为mysql
2、新建mysql用户组和mysql用户
[root@kgc1 src]# groupadd mysql 创建mysql用户组
[root@kgc1 src]# useradd -M -s /sbin/nologin mysql -g mysql //把mysql用户添加到mysql用户组中
3、新建数据目录并赋予相关属组及权限
[root@kgc1 src]# chown -R mysql:mysql /usr/src/mysql
[root@kgc1 src]# mkdir -p /data/mysql
[root@kgc1 src]# chmod -R 770 /data/mysql
[root@kgc1 src]# chown -R mysql:mysql /data/mysql
4、初始化mysqld
[root@kgc1 mysql]# ./bin/mysqld --user=mysql --basedir=/usr/src/mysql --datadir=/data/mysql --initialize
5、编辑配置文件及将mysql的服务脚本放到系统服务中，并配置环境变量让系统可以直接使用mysql的相关命令
[root@kgc1 mysql]# cp support-files/mysql.server /etc/init.d/mysqld
cp：是否覆盖"/etc/init.d/mysqld"？ yes
[root@kgc1 mysql]# ldconfig
[root@kgc1 mysql]# echo "PATH=$PATH:/usr/src/mysql/bin" > /etc/profile.d/mysql.sh
[root@kgc1 mysql]# source /etc/profile.d/mysql.sh
[root@kgc1 mysql]# chkconfig mysqld on
修改配置文件/etc/my.conf
basedir=/usr/src/mysql #mysql路径
datadir=/data/mysql #mysql数据目录
socket=/data/mysql/mysql.sock套接字位置
user=mysql //用户
server_id=1 #MySQLid 后面2个从服务器需设置不同
port=3306端口号
添加
skip-grant-tables选项 登录数据跳过密码验证
启动数据库
[root@kgc1 mysql]# systemctl start mysqld
登录数据库：
root@kgc1 mysql]# mysql -uroot -p
修改当前用户密码：
update mysql.user set authentication_string=password('123456') where user='root';
使用密码登录：
[root@kgc1 mysql]# mysql -uroot -p123456
修改数据库密码：
set password=password('1234567');
添加授权访问用户：（主1主2 ，从1从2都需要添加这个用户）
mysql> grant all on *.* to zhongjiao@'172.16.16.%' identified by'123456';
mysql> flush privileges; //刷新
mysql> SELECT DISTINCT CONCAT('User: ''',user,'''@''',host,''';') AS query FROM mysql.user; //查看用户表
mysql> show grants for 'zhongjiao'@'172.16.16.%'; //查看该用户的权限
二、配置mysql主主复制环境，配置主1主2mysql配置文件：
注意：如果不是两个yes可以考虑删除/data/mysql/文件下的auto.cnf文件和master.info然后登陆数据库关闭slave服务重新同步记得同步完之后刷新服务flush privileges;再开启slave服务
1）添加：
Vim /etc/my.conf
server-id =10 /两台主机的id号不能一样
Log_bin=mysql-bin //开启二进制文件
log-slave-updates=true //开始宕机自动切换
auto_increment_increment=2
auto_increment_offset=1
2）登录数据库mysql主1 mysql主2相互提升访问权限：
Mysql主1：
mysql> grant replication slave on *.* to 'zj'@'172.16.16.100' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges; //立即刷新
Query OK, 0 rows affected (0.01 sec)
Mysql主2：
mysql> grant replication slave on *.* to 'zj'@'172.16.16.80' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
3）Mysql1：查看master状态：
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000006 | 1752 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
4）mysql主2开启同步：
mysql> change master to master_host='172.16.16.80',master_user='zj',master_password='123456',master_log_file='mysql-binn.000006',master_log_pos=1752; //配置同步二进制文件
\Query OK, 0 rows affected, 2 warnings (0.11 sec)
mysql> start slave; //开启slave功能
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G; //查看同步状态
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.16.80
Master_User: zj
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000006
Read_Master_Log_Pos: 1752
Relay_Log_File: kgc1-relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000006
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1752
Relay_Log_Space: 526
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 10
Master_UUID: 095e8560-bf3a-11ea-b3e0-00505633c80b
Master_Info_File: /data/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
//两个yes表示已经同步成功
5）查看msql主2master状态开启mysql主1同步：
查看mysql主2master状态：
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master-bin.000003 | 763514 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
同步mysql主1配置：并开始slave服务：
mysql> change master to master_host='172.16.16.100',master_user='zj',master_password='123456',master_log_file='master-sbin.000003',master_log_pos=763514;
Query OK, 0 rows affected, 2 warnings (0.09 sec)
mysql> start slave; //开启slave服务
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.16.100
Master_User: zj
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 763514
Relay_Log_File: kgc1-relay-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: master-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 763514
Relay_Log_Space: 527
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 15
Master_UUID: 36a57e33-bf38-11ea-8d78-005056352f54
Master_Info_File: /data/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
ERROR:
No query specified
出现两个yes表示同步成功：
验证：
在mysql主1上创建一个db数据库在是否在mysql主2上能否查看到：
Mysql主1：
mysql> create database db;
Query OK, 1 row affected (0.00 sec)
Mysql主2：
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db |
| mysql |
| performance_schema |
| sys |
+--------------------+
5 rows in set (0.00 sec)
//主主配置成功：
三、配置主从myslq同步：
1）配置从1从2mysql配置文件：
添加一下内容：
server-id =30 //两个主服务器不能相同同时也不能与主服务器相同：
relay-log=relay-log-bin
relay-log-index=slave-erlay-bin.index
2）重启mysql服务（从1与从而都需要重启）：
[root@kgc1 mysql]# systemctl stop mysqld
[root@kgc1 mysql]# systemctl start mysqld
3）登录mysql数据库配置同步（从1与从2都需要配置）：
change master to master_host='172.16.16.100',master_user='zhongjiao'//刚刚的四台mysql数据库访问授权用户,master_password='123456',master_log_file='masmaster-bin.000004'//注意这里是主1或者主2的show master status下的文件名,master_log_pos=154;
4）开启slave功能并查看slave状态：
Mysql从1：
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.16.100
Master_User: zhongjiao
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000004
Read_Master_Log_Pos: 154
Relay_Log_File: relay-log-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: master-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 154
Relay_Log_Space: 526
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 15
Master_UUID: 36a57e33-bf38-11ea-8d78-005056352f54
Master_Info_File: /data/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
Mysql从2：
mysql> change master to master_host='172.16.16.100',master_user='zhongjiao',master_password='123456',master_log_file='master-bin.000004',master_log_pos=154;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.16.100
Master_User: zhongjiao
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000004
Read_Master_Log_Pos: 154
Relay_Log_File: relay-log-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: master-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 154
Relay_Log_Space: 526
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 15
Master_UUID: 36a57e33-bf38-11ea-8d78-005056352f54
Master_Info_File: /data/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
Smyql从1与从2都为yes表示已经配置完成：
5）验证：从主1mysql中创建一个abc1库在从1上查看：
Mysql主1：
mysql> create database abc1;
Query OK, 1 row affected (0.15 sec)
Mysql从1：
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| abc1 |
| mysql |
| performance_schema |
| sys |
+--------------------+
5 rows in set (0.03 sec)
配置完成
四、配置读写分离：
1）下载：atlas
wget https://github.com/Qihoo360/Atlas/releases/download/2.2.1/Atlas-2.2.1.el6.x86_64.rpm
2）安装
rpm -ivh Atlas-2.2.1.el6.x86_64.rpm
安装完成后会自动在/usr/local/mysql-proxy下生成四个文件：
[root@kgc1 ~]# cd /usr/local/mysql-proxy/
[root@kgc1 mysql-proxy]# ls
bin conf lib log
bin目录下放的都是可执行文件
1. “encrypt”是用来生成MySQL密码加密的，在配置的时候会用到
2. “mysql-proxy”是MySQL自己的读写分离代理
3. “mysql-proxyd”是360弄出来的，后面有个“d”，服务的启动、重启、停止。都是用他来执行的
conf目录下放的是配置文件
1. “test.cnf”只有一个文件，用来配置代理的，可以使用vim来编辑
lib目录下放的是一些包，以及Atlas的依赖
log目录下放的是日志，如报错等错误信息的记录
3）(必备，根据实际情况配置)用户名与其对应的加密过的MySQL密码，密码使用安装路径 /bin目录下的加密程序encrypt加密，用户名与密码之间用冒号分隔。主从数据库上需要先创建该用户并设置密码（用户名和密码在主从数据库上要一致）。
加密密码：
[root@kgc1 mysql-proxy]# cd bin/
[root@kgc1 bin]# ./encrypt 123456 //这里是只mysql授权atlas远程登录用户的密码：
/iZxz+0GRoA=
4）配置atlsa文件/usr/local/mysql-proxy/conf文件下的test.conf
[root@kgc1 conf]# vim test.cnf
[mysql-proxy]
#管理接口的用户名
admin-username = user
#管理接口的密码
admin-password = pwd
#Atlas后端连接的MySQL主库的IP和端口，可设置多项，用逗号分隔
proxy-backend-addresses =172.16.16.80:3306, 172.16.16.100:3306 //主mysql主1和主2的IP地址及端口
#Atlas后端连接的MySQL从库的IP和端口，@后面的数字代表权重，用来作负载均衡，若省略则默认为1，可设置多项，用逗号分隔
proxy-read-only-backend-addresses = 172.16.16.60:3306@1,172.16.16.70:3306@1 //mysql从服务从1和从2的IP地址和端口：
#用户名与其对应的加密过的MySQL密码，密码使用PREFIX/bin目录下的加密程序encrypt加密，下行的user1和user2为示例，将其替换>为你的MySQL的用户名和加密密码！
pwds = zhongjiao:/iZxz+0GRoA=
#设置Atlas的运行方式，设为true时为守护进程方式，设为false时为前台方式，一般开发调试时设为false，线上运行时设为true,true后面不能有空格。
daemon = true
5）配置完成进入到bin下目录开启Atlas服务
[root@kgc1 bin]# ./mysql-proxyd test start
OK: MySQL-Proxy of test is started
6）
然后用代理服务器登入数据库
mysql -h127.0.0.1 -P2345 -uuser -ppwd //-P2345是管理接口（配置文件里指明了的）端
MySQL [(none)]> SELECT * FROM backends ;//查看后端服务
+-------------+--------------------+-------+------+
| backend_ndx | address | state | type |
+-------------+--------------------+-------+------+
| 1 | 172.16.16.80:3306 | up | rw |
| 2 | 172.16.16.100:3306 | up | rw |
| 3 | 172.16.16.60:3306 | up | ro |
| 4 | 172.16.16.70:3306 | up | ro |
+-------------+--------------------+-------+------+
4 rows in set (0.00 sec)
7）mysql -h172.16.16.90 -P1234 -uzhongjiao -p123456 //-P1234是操作界面（被代理服务器授权的用户）端口不一样，登入的用户不一样。
使用操作界面登入进来你会发现和原来的数据库不一样
查看mysql库：
MySQL [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| abc1 |
| mysql |
| performance_schema |
| sys |
+--------------------+
5 rows in set (0.01 sec)
8）执行sql进行测试，可以通过日志看到写操作都在Master，读操作都连接到Slave了
[root@kgc1 bin]# more /usr/local/mysql-proxy/log/test.log
2020-07-02 10:37:15: (message) chassis-unix-daemon.c:138: [angel] we try to keep PID=2663 alive
2020-07-02 10:37:15: (message) mysql-proxy 0.8.2 started - instance: test
2020-07-02 10:37:15: (message) proxy listening on port 0.0.0.0:1234
2020-07-02 10:37:15: (message) added read/write backend: 172.16.16.80:3306
2020-07-02 10:37:15: (message) added read-only backend: 172.16.16.60:3306
2020-07-02 10:37:15: (message) added read-only backend: 172.16.16.70:3306
配置完成：
五、配置mysql高可用群集MMM
1)安装MMM
需要使用epel源可用直接去阿里源下载： 注意所有的服务器节点都需要下载：
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
在MMM代理服务器上下载：
[root@kgc1 bin]# yum install -y mysql-mmm*
2）在mysql主1主2从1从2中授权monitor访问：
mysql> grant replication client on *.* to 'mmm_monitor'@'172.16.16.%' identified by'monitor';
Query OK, 0 rows affected, 1 warning (0.09 sec)
mysql> grant super,replication client,process on *.* to 'mmm_agent'@'172.16.16.%' identified by'agent';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges; //立即刷新
Query OK, 0 rows affected (0.09 sec)
3）修改/etc/mysql-mmm/mmm_common.conf配置文件所有的节点都需要配置：
注意：此配置文件主1主2从1从2和代理服务都需要配置
[root@kgc1 mysql]# vim /etc/mysql-mmm/mmm_common.conf
active_master_role writer
<host default>
cluster_interface ens33
pid_path /run/mysql-mmm-agent.pid
bin_path /usr/libexec/mysql-mmm/
replication_user zj //你的mysql主服务的授权用户
replication_password 123456
agent_user mmm_agent 授权的mmm_agent用户和密码
agent_password agent
</host>
<host db1>
ip 172.16.16.80 主1mysql服务器IP地址
mode master
peer db2
</host>
<host db2>
ip 172.16.16.100 主2mysql服务器ip地址
mode master
peer db1
</host>
<host db3>
ip 172.16.16.60 从1mysql服务器ip地址
mode slave
</host>
<host db4>
ip 172.16.16.70 从2 mysql服务器ip地址
mode slave
</host>
<role writer>
hosts db1, db2
ips 172.16.16.200
mode exclusive
</role>
<role reader>
hosts db3, db4
ips 172.16.16.201, 172.16.16.202
mode balanced
</role>
4）修改vim /etc/mysql-mmm/mmm_agent.conf 文件：主1主2从1从2都需要修改
[root@kgc1 mysql]# vim /etc/mysql-mmm/mmm_agent.conf
include 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 db1 （你在common.conf里面对应的db位置）
5）修改代理服务器上的vim /etc/mysql-mmm/mmm_mon.conf 文件
[root@kgc1 ~]# vim /etc/mysql-mmm/mmm_mon.conf
include mmm_common.conf
<monitor>
ip 127.0.0.1 //本地
pid_path /run/mysql-mmm-monitor.pid
bin_path /usr/libexec/mysql-mmm
status_path /var/lib/mysql-mmm/mmm_mond.status
ping_ips 172.16.16.80,172.16.16.100,172.16.16.60,172.16.16.70 //你监控的主1主2从1从2的ip第
auto_set_online 10
# The kill_host_bin does not exist by default, though the monitor will
# throw a warning about it missing. See the section 5.10 "Kill Host
# Functionality" in the PDF documentation.
#
# kill_host_bin /usr/libexec/mysql-mmm/monitor/kill_host
#
</monitor>
<host default>
monitor_user mmm_monitor //mysql数据库授权用mmm_monito和密码
monitor_password monitor
</host>
debug 0
注意代理服务也需要配置 vim /etc/mysql-mmm/mmm_common.conf 和前面的主从一样的配置
6）开启代理和监控服务：
[root@kgc1 mysql]# systemctl start mysql-mmm-agent //主1
[root@kgc1 mysql]# systemctl start mysql-mmm-agent //主2
[root@kgc1 mysql]# systemctl start mysql-mmm-agent //从1
[root@kgc1 mysql]# systemctl start mysql-mmm-agent //从2
[root@kgc1 ~]# systemctl start mysql-mmm-monitor //监控代理服务器开启监控功能：
7）在代理服务器上测试群集：
[root@kgc1 ~]# mmm_control show
db1(172.16.16.80) master/ONLINE. Roles: writer(172.16.16.200)
db2(172.16.16.100) master/ONLINE. Roles:
db3(172.16.16.60) slave/ONLINE. Roles: reader(172.16.16.201)
db4(172.16.16.70) slave/ONLINE. Roles: reader(172.16.16.202)
表示已经配置成功
8）如果测试群集结果如下：
[root@kgc1 ~]# mmm_control show
db1(172.16.16.80) master/AWAITING_RECOVERY. Roles:
db2(172.16.16.100) master/AWAITING_RECOVERY. Roles:
db3(172.16.16.60) slave/AWAITING_RECOVERY. Roles:
db4(172.16.16.70) slave/AWAITING_RECOVERY. Roles: 、
说明各服务器没有时间同步：
9）虚拟机时间同步：可以使用yum install chrony -y来配置文件实现虚拟机时间同步：