mysql 主从

安装2台mysql，参照搭建LAMP中的mysql部分

配置master

[root@localhost ~]# vi /etc/my.cnf

log-bin=master

server-id = 1

[root@localhost ~]# /etc/init.d/mysqld restart

[root@localhost ~]# /usr/local/mysql/bin/mysql

# 受权备份权限给mysqlrepl用户，这里的192.168.10.39表示slave的IP

mysql> grant replication slave on *.* to 'mysqlrepl'@'192.168.10.39' identified by '123123';

# 刷新

mysql> flush privileges;

# 锁定

mysql> flush tables with read lock;

# 查看结果中的File 和Position 列

mysql> show master status;

+---------------+----------+--------------+------------------+

| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB |

+---------------+----------+--------------+------------------+

| master.000001 |      391 |              |                  |

+---------------+----------+--------------+------------------+

1 row in set (0.00 sec)

配置slave

[root@localhost ~]# vi /etc/my.cnf

log-bin=slave

server-id = 2

[root@localhost ~]# /usr/local/mysql/bin/mysql

# 暂停slave

mysql> slave stop;

# 同步，这里必须跟master对应

mysql> change master to master_host='192.168.10.29',master_port=3306,master_user='mysqlrepl',master_password='123123',master_log_file='master.000001',master_log_pos=391;

# 启动slave

mysql> slave start;

# 查看主从配置成功与否

mysql> show slave status\G;

# 如下两项为Yes 表示成功

Slave_IO_Running: Yes

Slave_SQL_Running: Yes