proxysql

这里是引用

mysql 安装

mysql-3307

create database db1;
CREATE TABLE db1.tab_20240102 (
    id INT PRIMARY KEY,
    name VARCHAR(50),
    email VARCHAR(50),
    age INT
);
CREATE TABLE db1.tab_20240103 (
    id INT PRIMARY KEY,
    name VARCHAR(50),
    email VARCHAR(50),
    age INT
);
INSERT INTO db1.tab_20240103 (id, name, email, age) VALUES (1, 'Alice', '[email protected]', 30);

mysql-3308

create database db1;
CREATE TABLE db1.tab_20240102 (
    id INT PRIMARY KEY,
    name VARCHAR(50),
    email VARCHAR(50),
    age INT
);
INSERT INTO db1.tab_20240102 (id, name, email, age) VALUES (1, 'Alice', '[email protected]', 30);

安装 
yum -y install proxysql-2.5.5-1-centos7.x86_64.rpm

启动
systemctl  status proxysql

登陆
mysql -uadmin -padmin -P6032 -h127.0.0.1

创建两个主机组

insert into mysql_servers(hostgroup_id,hostname,port) values(10,'127.0.0.1',3307);
insert into mysql_servers(hostgroup_id,hostname,port) values(20,'127.0.0.1',3308);

创建路由规则

INSERT INTO mysql_query_rules (active, match_digest, destination_hostgroup, apply) VALUES (1, '^SELECT \* FROM db1\.tab_20240102', 20, 1);
LOAD MYSQL QUERY RULES TO RUNTIME;
SAVE MYSQL QUERY RULES TO DISK;

INSERT INTO mysql_query_rules (active, match_digest, destination_hostgroup, apply) VALUES (1, '^(INSERT|UPDATE|DELETE) .* FROM db1\.(?!tab_20240102)', 10, 1);
LOAD MYSQL QUERY RULES TO RUNTIME;
SAVE MYSQL QUERY RULES TO DISK;

设置 monitor 用户

set mysql-monitor_username='root';
set mysql-monitor_password='root';
LOAD MYSQL VARIABLES TO RUNTIME;
SAVE MYSQL VARIABLES TO DISK;

创建应用用户

INSERT INTO mysql_users(username, password, default_hostgroup, active) VALUES ('my_user', 'password123', 10, 1);
LOAD MYSQL USERS TO RUNTIME;
SAVE MYSQL USERS TO DISK;

测试连接

mysql -P  6033  -u my_user   -ppassword123  -h 10.202.11.46 
mysql -P  6033  -u root   -proot  -h 10.202.11.46

查看日志

tail -f /var/lib/proxysql/proxysql.log

测试路由规则

mysql -P  6033  -u root   -proot  -h 10.202.11.46

mysql> select * from db1.tab_20240102;
+----+-------+-------------------+------+
| id | name  | email             | age  |
+----+-------+-------------------+------+
|  1 | Alice | [email protected] |   30 |
+----+-------+-------------------+------+
1 row in set (0.03 sec)

被路由到了的 mysql-3308 只有3308 有数据

登陆后台查看匹配信息

mysql -uadmin -padmin -P6032 -h127.0.0.1

mysql> SELECT * FROM stats_mysql_query_rules;
+---------+------+
| rule_id | hits |
+---------+------+
| 2       | 4    |
| 3       | 0    |
+---------+------+

查看路由规则

mysql> SELECT * FROM mysql_query_rules\G
*************************** 1. row ***************************
              rule_id: 2
               active: 1
             username: NULL
           schemaname: NULL
               flagIN: 0
          client_addr: NULL
           proxy_addr: NULL
           proxy_port: NULL
               digest: NULL
         match_digest: ^SELECT \* FROM db1\.tab_20240102
        match_pattern: NULL
 negate_match_pattern: 0
         re_modifiers: CASELESS
              flagOUT: NULL
      replace_pattern: NULL
destination_hostgroup: 20
            cache_ttl: NULL
   cache_empty_result: NULL
        cache_timeout: NULL
            reconnect: NULL
              timeout: NULL
              retries: NULL
                delay: NULL
    next_query_flagIN: NULL
       mirror_flagOUT: NULL
     mirror_hostgroup: NULL
            error_msg: NULL
               OK_msg: NULL
          sticky_conn: NULL
            multiplex: NULL
  gtid_from_hostgroup: NULL
                  log: NULL
                apply: 1
           attributes: 
              comment: NULL
*************************** 2. row ***************************
              rule_id: 3
               active: 1
             username: NULL
           schemaname: NULL
               flagIN: 0
          client_addr: NULL
           proxy_addr: NULL
           proxy_port: NULL
               digest: NULL
         match_digest: ^(INSERT|UPDATE|DELETE) .* FROM db1\.(?!tab_20240102)
        match_pattern: NULL
 negate_match_pattern: 0
         re_modifiers: CASELESS
              flagOUT: NULL
      replace_pattern: NULL
destination_hostgroup: 10
            cache_ttl: NULL
   cache_empty_result: NULL
        cache_timeout: NULL
            reconnect: NULL
              timeout: NULL
              retries: NULL
                delay: NULL
    next_query_flagIN: NULL
       mirror_flagOUT: NULL
     mirror_hostgroup: NULL
            error_msg: NULL
               OK_msg: NULL
          sticky_conn: NULL
            multiplex: NULL
  gtid_from_hostgroup: NULL
                  log: NULL
                apply: 1
           attributes: 
              comment: NULL
2 rows in set (0.00 sec)

mysql> 
```


修改应用连接端口为3306
```
UPDATE global_variables SET variable_value='3306' WHERE variable_name='mysql-interfaces';
 LOAD MYSQL VARIABLES TO RUNTIME;
SAVE MYSQL VARIABLES TO DISK;
```