MySQL数据库读写分离
Mysql数据库读写分离一、 Mysql数据库安装(此处略过)二、 Mysql主从复制,主服务器为A:192.168.5.31,从服务器为B:192
Mysql数据库读写分离
一、 Mysql数据库安装(此处略过)
二、 Mysql主从复制,主服务器为A:192.168.5.31,从服务器为B:192.168.5.32
1、 主服务器A上操作
登陆mysql
Mysql –u root –p
授权从服务器B同步数据用户
mysql> GRANT REPLICATION SLAVE ON *.* to 'slavedb'@'192.168.5.32' identified by '123456';
查看主服务器状态,记录红色字体标示,配置从服务器备用
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000006 | 107 | | mysql |
+------------------+----------+--------------+------------------+
修改mysql配置文件
vi /etc/my.cnf
server-id = 1 #设置server-id为1,1表示为主服务器
binlog-do-db= #需要进行同步的数据库,全部库都同步可不填
binlog-ignore-db= #不需要同步的数据库
2、 从服务器B上操作
修改mysql配置文件
vi /etc/my.cnf
server-di = 2 #设置server-id为2
binlog-do-db= #根据需要进行设置
binlog-ignore-db= #根据需要进行设置
登陆mysql
mysql –u root –p
停止slave同步
mysql> salve stop;
执行数据库同步命令, master_log_file, master_log_pos选项需要根据主数据填写
Mysql>Change master to
master_host='192.168.5.31',
master_user='slavedb',
master_password='123456',
master_log_file='mysql-bin.000006',
master_log_pos=107;
启动slave同步
mysql> salve start;
查看同步状态,Slave_IO_Running,,Slave_SQL_Running同时为yes表示已开启同步
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.5.31
Master_User: slavedb
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000006
Read_Master_Log_Pos: 107
Relay_Log_File: cs2-relay-bin.000004
Relay_Log_Pos: 253
Relay_Master_Log_File: mysql-bin.000006
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB: mysql
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
3、 测试主从复制
在主数据库创建数据库
mysql>create database db1;
在从数据库查看数据库,显示db1复制正常
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db1 |
| mysql |
| performance_schema |
+--------------------+
4 rows in set (0.00 sec)

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