mysql 架构~MGR+proxysql(1)

一简介:今天咱们来探讨下方案2的实现方式,同时也推荐方案2

二环境部署

1 proxysql 环境

2 mgr 环境

三进行配置

1 创建用户

1 添加监控用户并授权
grant all privileges on *.* to 'proxyuser'@'%' identified by 'proxypass';
2 添加代理业务用户并授权
GRANT INSERT,UPDATE,DELETE,SELECT,CREATE,DROP,ALTER ON * . * TO 'proxyuser'@'%' IDENTIFIED BY 'proxypass'; ;
flush privileges;

2 添加DB列表

insert into mysql_servers (hostgroup_id, hostname, port) values(1, 'mgr1', 3306);
insert into mysql_servers (hostgroup_id, hostname, port) values(2, 'mgr1', 3306);
insert into mysql_servers (hostgroup_id, hostname, port) values(2, 'mgr2', 3306);
insert into mysql_servers (hostgroup_id, hostname, port) values(2, 'mgr3', 3306);
hostgroup_id = 1代表write group
hostgroup_id = 2代表read group

3 修改监控账号密码

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UPDATE global_variables SET variable_value='proxysql' WHERE variable_name='mysql-monitor_username';
UPDATE global_variables SET variable_value='proxysql' WHERE variable_name='mysql-monitor_password';

4 添加后端访问账号

INSERT INTO MySQL_users(username,password,default_hostgroup) VALUES ('proxyuser','proxypass',1);

5 变量生效

LOAD MYSQL VARIABLES TO RUNTIME;
SAVE MYSQL VARIABLES TO DISK;
LOAD MYSQL SERVERS TO RUNTIME;
SAVE MYSQL SERVERS TO DISK;
LOAD MYSQL USERS TO RUNTIME;
SAVE MYSQL USERS TO DISK;

6 部署后端检测脚本

1 下载gr_sw_mode_checker.sh并放置在/var/lib/proxysql下并授予可执行权限

2 insert into scheduler(id, active, interval_ms, filename, arg1, arg2, arg3, arg4) values(1, 1, 3000, '/var/lib/proxysql/gr_sw_mode_checker.sh', 1, 2, 1, '/var/lib/proxysql/checker.log');

3 LOAD SCHEDULER TO RUNTIME;
SAVE SCHEDULER TO DISK;

7 进行连接检测

四补充

1 检测脚本必须要执行检测

2 github上检测脚本分为两种一种是单主模式的一种是多主模式的要注意区分场景使用

3 proxysql的视图要预选导入到mysql.sys库中

mysql 架构~MGR+proxysql(1)

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