step by step配置mysql复制_MySQL

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step by step配置mysql复制

采用全库复制的方案，方便管理mysql 5.5 + rhel5.8

10.4.11.12 master

10.4.11.13 slave

---Master端设置

1， 创建复制帐号，需要复制和slave权限

mysql> GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO repl@'10.4.11.12 IDENTIFIED BY 'mysql;

Query OK, 0 rows affected (0.00 sec)

2， 修改参数，并重启生效

每个服务器必须有唯一的server-id，默认为1，为了防止冲突，一般建议设置为IP地址的后几位，本例设置为12，通过修改主库的my.cnf文件实现

#skip-networking

server-id = 12

# Uncomment the following if you want to log updates

log-bin=mysql-bin

重启mysql

service mysql restart

---slave端的设置

3，slave库的参数设置，同样需要重启生效

vi /etc/my.cnf

#skip-networking

server-id = 13

# Uncomment the following if you want to log updates

log-bin=mysql-relay-bin

4，master导出数据到slave库

如果数据库使用的是MyISAM表类型的话，可按如下方式操作：

shell> mysqldump --all-databases --master-data=1 > data.sql

如果数据库使用的是InnoDB表类型的话，则应该使用single-transcation：

shell> mysqldump --all-databases --single-transaction --master-data=1 > data.sql

slave端导入数据

mysql

5，查看master的配置

mysql> show master status;

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

| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |

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

| mysql-bin.000001 | 107 | | |

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

1 row in set (0.00 sec)

6，启动复制，slave端运行如下命令

--配置复制的指向

CHANGE MASTER TO MASTER_HOST='10.4.11.12',

MASTER_USER='repl',

MASTER_PASSWORD='mysql',

MASTER_LOG_FILE='mysql-bin.000001',

MASTER_LOG_POS=0;

--开始复制

mysql> start slave ;

Query OK, 0 rows affected (0.00 sec)

7,查看复制的状态，注意slave_io_state, slave_io_Running,和slave_sql_running三列的值

mysql> show slave status/G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 172.16.251.11

Master_User: repl

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: mysql-bin.000001

Read_Master_Log_Pos: 1278

Relay_Log_File: linux2-relay-bin.000002

Relay_Log_Pos: 503

Relay_Master_Log_File: mysql-bin.000001

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Replicate_Do_DB:

……..

8，测试复制情况

Master端新建一个表

Slave查看是否复制完成

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