step by step配置mysql复制的具体方法

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
#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 < data.sql

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


代码如下:

--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