这里是引用

mysql 安装

mysql-3307

mysql -P  3307  -u root   -proot  -h 10.211.55.8

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', 'alice@example.com', 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', 'alice@example.com', 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);
LOAD MYSQL QUERY RULES TO RUNTIME;
SAVE MYSQL QUERY RULES TO DISK;

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);INSERT INTO mysql_users(username, password, default_hostgroup, active) VALUES ('root', 'root', 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 10.202.11.46mysql> select * from db1.tab_20240102;
+----+-------+-------------------+------+
| id | name  | email             | age  |
+----+-------+-------------------+------+
|  1 | Alice | alice@example.com |   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 -h127.0.0.1mysql> 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: 2active: 1username: NULLschemaname: NULLflagIN: 0client_addr: NULLproxy_addr: NULLproxy_port: NULLdigest: NULLmatch_digest: ^SELECT \* FROM db1\.tab_20240102match_pattern: NULLnegate_match_pattern: 0re_modifiers: CASELESSflagOUT: NULLreplace_pattern: NULL
destination_hostgroup: 20cache_ttl: NULLcache_empty_result: NULLcache_timeout: NULLreconnect: NULLtimeout: NULLretries: NULLdelay: NULLnext_query_flagIN: NULLmirror_flagOUT: NULLmirror_hostgroup: NULLerror_msg: NULLOK_msg: NULLsticky_conn: NULLmultiplex: NULLgtid_from_hostgroup: NULLlog: NULLapply: 1attributes: comment: NULL
*************************** 2. row ***************************rule_id: 3active: 1username: NULLschemaname: NULLflagIN: 0client_addr: NULLproxy_addr: NULLproxy_port: NULLdigest: NULLmatch_digest: ^(INSERT|UPDATE|DELETE) .* FROM db1\.(?!tab_20240102)match_pattern: NULLnegate_match_pattern: 0re_modifiers: CASELESSflagOUT: NULLreplace_pattern: NULL
destination_hostgroup: 10cache_ttl: NULLcache_empty_result: NULLcache_timeout: NULLreconnect: NULLtimeout: NULLretries: NULLdelay: NULLnext_query_flagIN: NULLmirror_flagOUT: NULLmirror_hostgroup: NULLerror_msg: NULLOK_msg: NULLsticky_conn: NULLmultiplex: NULLgtid_from_hostgroup: NULLlog: NULLapply: 1attributes: 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;
```