mysql 主从不同步处理--数据库初始化

问题处理借鉴至网上的内容

又一次做主从，全然同步

在主库新建一张表后。在slave 段发现数据没有同步过去。

mysql version：5.6.10

os ：rhel 5.6

解决过程例如以下：

1.主库进行锁表，防止数据写入

mysql> flush tables with read lock;

解锁命令：

Mysql> unlock tables;

2.进行数据备份 。数据备份到mysql.sql文件

#mysqldump -uroot -pmysql --all-databases > mysql.sql

3.查看master 状态

mysql> show master status;

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

| File             | Position |Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

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

| mysql-bin.000003 |      335 |test         |                  |                   |

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

1 row in set (0.00 sec)

4.把mysql备份文件传到从库机器。进行数据恢复

scp or ftp

5.停止从库的状态

mysql> stop slave;

6.从库导入数据备份

mysql> source /lixora/mysql.sql；

7.设置从库同步。注意该处的同步点。就是主库show master status信息里的| File| Position两项

change master to

master_host='10.80.18.241',     -----主库IP地址

master_user='root',                     

master_password='mysql',

master_port=3306,

master_log_file='mysql-bin.000003',

master_log_pos=335;

当中MASTER_HOST是master机的ip，

MASTER_USER和MASTER_PASSWORD是在master上加入的用户，用来复制操作的用户

MASTER_LOG_FILE和MASTER_LOG_POS相应与show master status里的信息

8.又一次开启从同步

mysql> start slave;

9.查看同步状态

mysql> show slave status\G

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

同步測试：

【master】

mysql> use test;

Database changed

mysql> show tables;

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

| Tables_in_test |

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

| lixora         |

| max            |

| test           |

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

3 rows in set (0.00 sec)





mysql>  create table lixora_2015_0317 as select * from mysql.user;

Query OK, 5 rows affected (0.68 sec)

Records: 5  Duplicates: 0  Warnings: 0

mysql> show tables;

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

| Tables_in_test   |

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

| lixora           |

| lixora_2015_0317 |

| max              |

| test             |

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

4 rows in set (0.00 sec)





mysql> select * from  lixora_2015_0317;

。。。

5 rows in set (0.00 sec)

【slave】

mysql> use test

Database changed

mysql> show tables;

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

| Tables_in_test   |

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

| lixora           |

| lixora_2015_0317 |

| max              |

| test             |

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

4 rows in set (0.00 sec)





mysql> select count(*) from lixora_2015_0317;

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

| count(*) |

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

|        5 |

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

1 row in set (0.06 sec)

mysql> show slave status\G

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

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 10.80.18.241

                  Master_User: root

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000003

          Read_Master_Log_Pos: 1166

               Relay_Log_File: oracle11g-dag-relay-bin.000002

                Relay_Log_Pos: 1114

        Relay_Master_Log_File: mysql-bin.000003

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

              Replicate_Do_DB: 

          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: 1166

              Relay_Log_Space: 1295

              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: 

  Replicate_Ignore_Server_Ids: 

             Master_Server_Id: 1

                  Master_UUID: 888a8d9e-cbb3-11e4-b87e-000c29d57584

             Master_Info_File: /var/lib/mysql/master.info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it

           Master_Retry_Count: 86400

                  Master_Bind: 

      Last_IO_Error_Timestamp: 

     Last_SQL_Error_Timestamp: 

               Master_SSL_Crl: 

           Master_SSL_Crlpath: 

           Retrieved_Gtid_Set: 

            Executed_Gtid_Set: 

                Auto_Position: 0

1 row in set (0.00 sec)