[主辅同步]教你在MySQL 5.0以上版本中配置主从库

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| November 7, 2008 17:28 | root | Via 本站原创

下面直接记录下配置主从库的操作:(本文用的是mysql5.0以上)

1.在主库建立要同步的数据库,建立主库的帐号和修改主库配置

首先连接上数据库

mysql -S /tmp/mysql-3108.sock

创建测试同步的数据库,"

create database sinatest;

"

然后建立负责同步的用户！

grant all on *.* to ali@"%" Identified by "abc111";

然后修改/data2/ali/mysql3308/my.cnf主库的配置,增加

binlog-do-db=sinatest

应该这样写：

server-id = 101
log-bin = bin_log
binlog-do-db=sinatest

否则出现：

Error reading packet from server: Binary log is not open ( server_errno=1236)//就是log-bin = bin_log需要配置一下

The slave I/O thread stops because master and slave have equal MySQL server ids;//server-id = 101需要配置，且和slave机器的server-id=2不同喔，否则出错。。。

2.修改从库配置

然后修改/data2/ali/mysql3309/my.cnf从库的配置,增加

master-host=127.0.0.1

master-user=ali

master-password=abc111

master-port=3308

server-id=2

master-connect-retry=60

replicate-do-db=sinatest

log-slave-updates

3.重启mysql

先杀死mysql进程,然后再启动

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data2/ali/mysql3308/my.cnf --user=root &

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data2/ali/mysql3309/my.cnf --user=root &

4.在主库创建数据表,检查从库是否同步正确

进入主库,创建数据表

mysql -S /tmp/mysql-3108.sock

CREATE TABLE if not exists ali_test_00 (

`id` int(11) unsigned NOT NULL auto_increment,

`my_id` varchar(16) binary NOT NULL default '',

`my_title` varchar(96) binary NOT NULL default '',

`status` int(11) unsigned NOT NULL default '1',

PRIMARY KEY (`id`),

KEY `my_id` (`my_id`)

) TYPE=MyISAM;

insert into ali_test_00 values (null,32,"aliwwww",1);

insert into ali_test_00 values (null,32,"aliwwww",1);

然后检查从库是否有该表和表中是否有数据

5.检查主从库常用命令

SHOW SLAVE STATUS;

SHOW MASTER STATUS;

slave stop;

slave start;

CHANGE MASTER TO

MASTER_HOST='127.0.0.1',

MASTER_USER='ali',

MASTER_PASSWORD='abc111',

MASTER_LOG_FILE='mysql-bin.000003',

MASTER_LOG_POS=0;

load data from master//马上同步的命令

mysqladmin shutdown: 这样停掉mysql靠谱点，比起用kill -9 好！
6. 测试
在 database: sinatest体验一下