mysql MMM高可用

mysql MMM高可用

一、 安装mysql mmm
1）
安装yum源和epel源
[root@centos01 ~]# cd /etc/yum.repos.d/
[root@centos01 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@centos01 ~]# yum -y install epel-release

[root@centos02 ~]# cd /etc/yum.repos.d/
[root@centos02 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@centos02 ~]# yum -y install epel-release

[root@centos03 ~]# cd /etc/yum.repos.d/
[root@centos03 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@centos03 ~]# yum -y install epel-release

[root@centos04 ~]# cd /etc/yum.repos.d/
[root@centos04 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@centos04 ~]# yum -y install epel-release

[root@centos05 ~]# cd /etc/yum.repos.d/
[root@centos05 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@centos05 ~]# yum -y install epel-release
2）
安装mysql mmm
[root@centos01 ~]# yum -y install mysql-mmm*
[root@centos02 ~]# yum -y install mysql-mmm*
[root@centos03 ~]# yum -y install mysql-mmm*
[root@centos04 ~]# yum -y install mysql-mmm*
[root@centos05 ~]# yum -y install mysql-mmm*
3）
修改host文件
[root@centos01 ~]# vim /etc/hosts
192.168.100.10 db1
192.168.100.20 db2
192.168.100.30 db3
192.168.100.40 db4
192.168.100.50 db5
[root@centos01 ~]# scp /etc/hosts root@192.168.100.20:/etc/
[root@centos01 ~]# scp /etc/hosts root@192.168.100.30:/etc/
[root@centos01 ~]# scp /etc/hosts root@192.168.100.40:/etc/
[root@centos01 ~]# scp /etc/hosts root@192.168.100.50:/etc/
4）
配置mysql主服务器节点配置文件
[root@centos01 ~]# vim /etc/my.cnf
log-bin=mysql-bin
log-slave-updates=true
server-id=10
relay-log=relay-log-bin
relay-log-index=relay-log-bin.index

[root@centos02 ~]# vim /etc/my.cnf
log-bin=mysql-bin
log-slave-updates=true
server-id=20
relay-log=relay-log-bin
relay-log-index=relay-log-bin.index
5）
配置mysql从服务器节点配置文件
[root@centos03 ~]# vim /etc/my.cnf
log-bin=mysql-bin
server-id=30
relay-log=relay-log-bin
relay-log-index=relay-log-bin.index

[root@centos04 ~]# vim /etc/my.cnf
log-bin=mysql-bin
server-id=40
relay-log=relay-log-bin
relay-log-index=relay-log-bin.index
二、 配置mysql mmm
1、 配置mysql mmm配置文件
1）
修改mysql mmm主配置文件
[root@centos01 ~]# vim /etc/mysql-mmm/mmm_common.conf

cluster_interface ens32
pid_path /run/mysql-mmm-agent.pid
bin_path /usr/libexec/mysql-mmm/
replication_user slave
replication_password pwd@123
agent_user mmm_agent
agent_password pwd@123

ip 192.168.100.10 mode master peer db2 ip 192.168.100.20 mode master peer db1 ip 192.168.100.30 mode slave ip 192.168.100.40 mode slave hosts db1, db2 ips 192.168.100.100 mode exclusive hosts db3, db4 ips 192.168.100.101, 192.168.100.102 mode balanced   [root@centos01~]# scp /etc/mysql-mmm/mmm_common.conf 192.168.100.20:/etc/mysql-mmm/ [root@centos01~]# scp /etc/mysql-mmm/mmm_common.conf 192.168.100.30:/etc/mysql-mmm/ [root@centos01~]# scp /etc/mysql-mmm/mmm_common.conf 192.168.100.40:/etc/mysql-mmm/ [root@centos01~]# scp /etc/mysql-mmm/mmm_common.conf 192.168.100.50:/etc/mysql-mmm/ **2） 在所有安装mysql服务器系欸电脑配置客户端代理** [root@centos01 ~]# vim /etc/mysql-mmm/mmm_agent.conf this db1

[root@centos02 ~]# vim /etc/mysql-mmm/mmm_agent.conf
this db2

[root@centos03 ~]# vim /etc/mysql-mmm/mmm_agent.conf
this db3

[root@centos04 ~]# vim /etc/mysql-mmm/mmm_agent.conf
this db4
3）
设置开机自动启动
[root@centos01 ~]# systemctl start mysql-mmm-agent
[root@centos01 ~]# systemctl enable mysql-mmm-agent

[root@centos02 ~]# systemctl start mysql-mmm-agent
[root@centos02 ~]# systemctl enable mysql-mmm-agent

[root@centos03 ~]# systemctl start mysql-mmm-agent
[root@centos03 ~]# systemctl enable mysql-mmm-agent

[root@centos04 ~]# systemctl start mysql-mmm-agent
[root@centos04 ~]# systemctl enable mysql-mmm-agent
4）
mysql中授权监控端管理mysql节点
[root@centos01 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_agent’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)

[root@centos02 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_agent’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)

[root@centos03 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_agent’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)

[root@centos04 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_agent’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)
5）
配置服务器监控端
[root@centos05 ~]# vim /etc/mysql-mmm/mmm_mon.conf
8 ping_ips 192.168.100.10,192.168.100.20,192.168.100.30,192.168.100.40
9 auto_set_online 5
20 monitor_user mmm_monitor
21 monitor_password pwd@123

6）
授权监控mysql连接监控端账户密码
[root@centos01 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_monitor’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)

[root@centos02 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_monitor’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)

[root@centos03 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_monitor’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)

[root@centos04 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘mmm_monitor’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)
7）
启动监控端服务器
[root@centos05 ~]# systemctl start mysql-mmm-monitor
[root@centos05 ~]# systemctl enable mysql-mmm-monitor
8）
查看mysql状态
[root@centos05 ~]# mmm_control show

9）
停止第一台主节点查看
[root@centos01 ~]# systemctl stop mysqld
[root@centos05 ~]# mmm_control show


开启第一台主节点，停掉第二台节点查看
[root@centos01 ~]# systemctl start mysqld
[root@centos02 ~]# systemctl stop mysqld
[root@centos05 ~]# mmm_control show

10）
授权用户访问mysql账户和密码
[root@centos01 ~]# mysql -uroot -ppwd@123
mysql> grant all on . to ‘bob’@‘192.168.100.%’ identified by ‘pwd@123’;
Query OK, 0 rows affected (0.00 sec)
三、 客户端访问
1）
安装mysql客户端
[root@centos06 ~]# rm -rf /etc/yum.repos.d/CentOS-*
[root@centos06 ~]# mount /dev/cdrom /mnt/
mount: /dev/sr0 写保护，将以只读方式挂载
[root@centos06 ~]# yum -y install mysql
2）
登陆
[root@centos06 ~]# mysql -ubob -p -h 192.168.100.10 -P 3306
Enter password:
3）
Mysql客户端创建数据库测试
MySQL [(none)]> create database cheng;
Query OK, 1 row affected (0.00 sec)