mysql 多进程 读写分离_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：192.168.5.321、    主服务器A上操作登陆mysqlMysql –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.cnfserver-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.cnfserver-di = 2  #设置server-id为2binlog-do-db=  #根据需要进行设置binlog-ignore-db=    #根据需要进行设置登陆mysqlmysql –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 tomaster_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 eventMaster_Host: 192.168.5.31Master_User: slavedbMaster_Port: 3306Connect_Retry: 60Master_Log_File: mysql-bin.000006Read_Master_Log_Pos: 107Relay_Log_File: cs2-relay-bin.000004Relay_Log_Pos: 253Relay_Master_Log_File: mysql-bin.000006Slave_IO_Running: YesSlave_SQL_Running: YesReplicate_Do_DB:Replicate_Ignore_DB: mysqlReplicate_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)

三、    配置数据库读写分离，由mysql proxy完成，主服务器A为写操作，从服务器B为读操作1、    配置mysql proxy，根据需要下载32位或64位wget http://cdn.mysql.com/Downloads/MySQL-Proxy/mysql-proxy-0.8.3-linux-glibc2.3-x86-32bit.tar.gzwget http://cdn.mysql.com/Downloads/MySQL-Proxy/mysql-proxy-0.8.3-linux-glibc2.3-x86-64bit.tar.gz解压mysql proxytar –zxvf mysql-proxy-0.8.3-linux-glibc2.3-x86-32bit.tar.gzcp –r mysql-proxy-0.8.3-linux-glibc2.3-x86-32bit /usr/local/mysql-proxy2、    创建mysql proxy配置文件，具体参数可查看/usr/local/mysql-proxy/bin/mysql-proxy –help-allvi /etc/mysql-proxy.cnf[mysql-proxy]user=root      #指定mysql-proxy运行用户proxy-address=192.168.5.31:4040   #mysql-proxy运行运行ip和端口号proxy-read-only-backend-addresses=192.168.5.32:3306  #读操作数据库地址proxy-backend-addresses=192.168.5.31:3306   #写操作数据库地址proxy-lua-script=/usr/local/mysql-proxy/scripts/rw-splitting.lua  #读写分离配置文件路径log-file=/usr/local/mysql-proxy/log/mysql-proxy.log  #日志文件存放路径log-level=debugdaemon=true  #以守护进程方式运行keepalive=true   #mysql-proxy进程假死后自动重启

3、    创建日志存放目录

mkdir /usr/local/mysql-proxy/log

4、    复制读写分离配置文件

mkdir /usr/local/mysql-proxy/scripts

cp /usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua /usr/local/mysql-proxy/scripts

5、    修改读写分离配置文件，默认达到4个连接才进行读写分离

vi /usr/local/mysql-proxy/scripts/rw-splitting.lua

if not proxy.global.config.rwsplit then

proxy.global.config.rwsplit = {

min_idle_connections = 1,  #默认4，改为1

max_idle_connections = 1,  #默认8，改为1

is_debug = false

}

end

6、    修改mysql-proxy.cnf权限

chmod 660 /etc/mysql-proxy.cnf

7、    启动mysql proxy

/usr/local/mysql-proxy/bin/mysql-proxy --defaults-file=/etc/mysql-proxy.cnf

8、    创建用于读写分离数据库连接账户

登陆主服务器，创建用户

mysql > GRANT ALL PRIVILEGES ON *.* TO "proxy"@"192.168.5.31" IDENTIFIED BY 'proxy' WITH GRANT OPTION;

9、    测试读写分离

登陆从服务器B，停止数据库同步

mysql>slave stop;

在客户端连接mysql proxy进行读写操作

mysql –u proxy –h 192.168.5.31 –p –P 4040

登陆后在db1中写入数据

mysql>use db1;

mysql>create table tb1(id int(5),name char(10));

mysql>insert into tb1 values (1,’abc’);

在db1 中查询数据

mysql> select * from tb1;

Empty set (0.00 sec)

查询为空说明读写分离成功