Proxysql读写分离
Proxysql读写分离
主从配置
# /etc/my.cnf
主节点
[mysqld]
log-bin=mysql-bin
server-id=1
从节点
[mysqld]
server-id=2
read_only=1
#初始化以及创建主从复制用户
mysql> alter user 'root'@'localhost' identified with mysql_native_password by 'Jianren@123';
Query OK, 0 rows affected (0.00 sec)
mysql> grant all privileges on *.* to 'root'@'localhost';
Query OK, 0 rows affected (0.00 sec)
mysql> create user 'slave'@'%' identified with mysql_native_password by 'Jianren@123';
Query OK, 0 rows affected (0.00 sec)
mysql> grant replication slave on *.* to 'slave'@'%';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
主从复制部署文档参考
#创建proxysql用户及监控用户
mysql> create user 'proxy'@'%' identified with mysql_native_password by 'Jianren@123';
Query OK, 0 rows affected (0.01 sec)
mysql> grant all on *.* to proxy;
Query OK, 0 rows affected (0.00 sec)
mysql> create user 'monitor'@'%' identified with mysql_native_password by 'Jianren@123' ;
Query OK, 0 rows affected (0.00 sec)
mysql> grant all on *.* to monitor ;
Query OK, 0 rows affected (0.00 sec)
安装proxysql
# 配置源
cat <加入节点
# 登录管理
mysql -uadmin -padmin -P6032 -h127.0.0.1 --prompt='Admin>'
# 加入主节点，可以称为写节点
Admin> INSERT INTO mysql_servers(hostgroup_id,hostname,port,weight,comment) VALUES (1,'10.10.10.10',3306,1,'主');
# 加入从节点，可以称为读节点
Admin> INSERT INTO mysql_servers(hostgroup_id,hostname,port,weight,comment) VALUES (2,'10.10.10.11',3306,1,'备');
Admin> SELECT hostgroup_id, hostname, port,weight,comment,status FROM mysql_servers;
+--------------+-------------+------+--------+---------+--------+
| hostgroup_id | hostname | port | weight | comment | status |
+--------------+-------------+------+--------+---------+--------+
| 1 | 10.10.10.10 | 3306 | 1 | 主 | ONLINE |
| 2 | 10.10.10.11 | 3306 | 1 | 备 | ONLINE |
+--------------+-------------+------+--------+---------+--------+
2 rows in set (0.00 sec)
注： hostgroup_id区分读写组、hostname为节点IP、portMySQL端口、weight默认1、comment备注区分作用
# 查询监控配置
Admin> select * from global_variables where variable_name like "mysql-monitor%";
# 配置监控用户名
Admin> UPDATE global_variables SET variable_value='monitor' WHERE variable_name='mysql-monitor_username';
Query OK, 1 row affected (0.00 sec)
# 配置密码
Admin> UPDATE global_variables SET variable_value='Jianren@123' WHERE variable_name='mysql-monitor_password';
Query OK, 1 row affected (0.00 sec)
# 查询监控配置
Admin> select * from global_variables where variable_name like "mysql-monitor%";
#载入使用当前配置
Admin> LOAD MYSQL VARIABLES TO RUNTIME;
Query OK, 0 rows affected (0.00 sec)
# 持久化到磁盘，重启配置依然还在
Admin> SAVE MYSQL VARIABLES TO DISK;
Query OK, 158 rows affected (0.01 sec)
Admin> LOAD MYSQL SERVERS TO RUNTIME;
Query OK, 0 rows affected (0.00 sec)
Admin> SAVE MYSQL SERVERS TO DISK;
Query OK, 0 rows affected (0.01 sec)
# 监视和分析 ProxySQL 中 MySQL 服务器的性能和可用性
Admin> SELECT * FROM monitor.mysql_server_ping_log ORDER BY time_start_us DESC LIMIT 4;
+-------------+------+------------------+----------------------+------------+
| hostname | port | time_start_us | ping_success_time_us | ping_error |
+-------------+------+------------------+----------------------+------------+
| 10.10.10.10 | 3306 | 1698902922196895 | 427 | NULL |
| 10.10.10.11 | 3306 | 1698902922196793 | 508 | NULL |
| 10.10.10.10 | 3306 | 1698902912195542 | 324 | NULL |
| 10.10.10.11 | 3306 | 1698902912195448 | 398 | NULL |
+-------------+------+------------------+----------------------+------------+
注： error表中 null为正常 有error为异常
# 监视和分析 ProxySQL 与 MySQL 服务器之间的连接事件和活动
Admin> SELECT * FROM monitor.mysql_server_connect_log ORDER BY time_start_us DESC LIMIT 4;
+-------------+------+------------------+-------------------------+---------------+
| hostname | port | time_start_us | connect_success_time_us | connect_error |
+-------------+------+------------------+-------------------------+---------------+
| 10.10.10.11 | 3306 | 1698902932300587 | 1438 | NULL |
| 10.10.10.10 | 3306 | 1698902931312451 | 1337 | NULL |
| 10.10.10.10 | 3306 | 1698902872353367 | 1380 | NULL |
| 10.10.10.11 | 3306 | 1698902871311131 | 2046 | NULL |
+-------------+------+------------------+-------------------------+---------------+
# 将一个新的用户记录插入到 mysql_users 表中 用于创建数据库用户 并连接到数据库服务器。
Admin> INSERT INTO mysql_users(username,password,default_hostgroup) VALUES ('proxy','Jianren@123',1);
Query OK, 1 row affected (0.00 sec)
Admin> INSERT INTO mysql_users(username,password,default_hostgroup) VALUES ('monitor','Jianren@123',2);
Query OK, 1 row affected (0.01 sec)
Admin> LOAD MYSQL USERS TO RUNTIME;
Query OK, 0 rows affected (0.00 sec)
Admin> SAVE MYSQL USERS TO DISK;
Query OK, 0 rows affected (0.01 sec)
# 查询用户
Admin> select username, password, active, default_hostgroup from mysql_users;
+----------+-------------+--------+-------------------+
| username | password | active | default_hostgroup |
+----------+-------------+--------+-------------------+
| proxy | Jianren@123 | 1 | 1 |
| monitor | Jianren@123 | 1 | 2 |
+----------+-------------+--------+-------------------+
2 rows in set (0.00 sec)
Admin> select * from mysql_users \G
*************************** 1. row ***************************
username: proxy
password: Jianren@123
active: 1
use_ssl: 0
default_hostgroup: 1
default_schema: NULL
schema_locked: 0
transaction_persistent: 1
fast_forward: 0
backend: 1
frontend: 1
max_connections: 10000
attributes:
comment:
*************************** 2. row ***************************
username: monitor
password: Jianren@123
active: 1
use_ssl: 0
default_hostgroup: 2
default_schema: NULL
schema_locked: 0
transaction_persistent: 1
fast_forward: 0
backend: 1
frontend: 1
max_connections: 10000
attributes:
comment:
2 rows in set (0.00 sec)
创建规则
# 创建规则写入，更新操作使用主节点
Admin> insert into mysql_query_rules(rule_id,active,match_digest,destination_hostgroup,apply) values(1,1,'^select.*from update$',1,1);
Query OK, 1 row affected (0.00 sec)
#创建规则查询数据使用从节点
Admin> insert into mysql_query_rules(rule_id,active,match_digest,destination_hostgroup,apply) values(2,1,'^select',2,1);
Query OK, 1 row affected (0.00 sec)
#创建规则查询库使用从节点
Admin> insert into mysql_query_rules(rule_id,active,match_digest,destination_hostgroup,apply) values(3,1,'^show',2,1);
Query OK, 1 row affected (0.00 sec)
# 查看规则
Admin> select rule_id,active,match_digest,destination_hostgroup,apply from mysql_query_rules;
+---------+--------+-----------------------+-----------------------+-------+
| rule_id | active | match_digest | destination_hostgroup | apply |
+---------+--------+-----------------------+-----------------------+-------+
| 1 | 1 | ^select.*from update$ | 1 | 1 |
| 2 | 1 | ^select | 2 | 1 |
| 3 | 1 | ^show | 2 | 1 |
+---------+--------+-----------------------+-----------------------+-------+
3 rows in set (0.00 sec)
# 载入使用并持久化到磁盘
Admin> load mysql query rules to runtime;
Query OK, 0 rows affected (0.00 sec)
Admin> load admin variables to runtime;
Query OK, 0 rows affected (0.00 sec)
Admin> save mysql query rules to disk ;
Query OK, 0 rows affected (0.02 sec)
Admin> save admin variables to disk ;
Query OK, 49 rows affected (0.00 sec)
插入数据，查询数据
# 切换proxy用户
[root@localhost ~]# mysql -uproxy -pJianren@123 -P6033 -h127.0.0.1
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.30 (ProxySQL)
Copyright (c) 2000, 2023, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.01 sec)
mysql> create database db1;
Query OK, 1 row affected (0.00 sec)
mysql> USE db1;
Database changed
mysql> CREATE TABLE test1 (id INT AUTO_INCREMENT PRIMARY KEY,name VARCHAR(255));
Query OK, 0 rows affected (0.02 sec)
mysql> INSERT INTO test1 (id, name) VALUES(1, 'kk'),(2, 'nameqq');
Query OK, 2 rows affected (0.01 sec)
Records: 2 Duplicates: 0 Warnings: 0
查询记录验证
# 切换管理 查询
mysql -uadmin -padmin -P6032 -h127.0.0.1 --prompt='Admin>'
Admin> select * from stats_mysql_query_digest \G
规则生效
