mysql导入导出及复制

mysqldump -uroot -psphinx lb8844 oho_ask_question>/usr/local/ask.sql
退出数据库，导入sql文件
mysql -uroot -p123456 lb8844 < lb8844_2009.sql

数据库复制
主机/etc/my.cnf设置
server-id       = 10（不设置为1，因为1通常是服务器的默认值，容易混淆）

打开二进制日志
log-bin=mysql-bin
binlog_format=mixed

重启mysql
service mysql restart

从机/etc/my.cnf设置
server-id       = 2
master-host=192.168.10.201
master-user=sync
master-password=8844sync
master-connect-retry=10
replicate-do-db=lb8844
binlog-ignore-db=mysql

重启mysql
service mysql restart

在主机中查看是否打开二进制日志
进入mysql
show master status;
mysql> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |      889 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

##重新设置二进制日志
reset master；
mysql> reset master;
Query OK, 0 rows affected (0.01 sec)

在从机中
进入mysql
start slave;
show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.10.201
                  Master_User: sync
                  Master_Port: 3306
                Connect_Retry: 10
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 889
               Relay_Log_File: localhost-relay-bin.000003
                Relay_Log_Pos: 1034
        Relay_Master_Log_File: mysql-bin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: lb8844
          Replicate_Ignore_DB: 
           Replicate_Do_Table: 
       Replicate_Ignore_Table: 
      Replicate_Wild_Do_Table: 
  Replicate_Wild_Ignore_Table: 
                   Last_Errno: 0
                   Last_Error: 
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 889
              Relay_Log_Space: 1193
              Until_Condition: None
               Until_Log_File: 
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File: 
           Master_SSL_CA_Path: 
              Master_SSL_Cert: 
            Master_SSL_Cipher: 
               Master_SSL_Key: 
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 0
               Last_SQL_Error: 
1 row in set (0.00 sec)

ERROR: 
No query specified
如果 Slave_IO_Running: Yes
    Slave_SQL_Running: Yes
这两项为yes则正确；

stop slave；
reset slave；
start slave；
以上三项为重启slave；