论坛徽章:: 0

电梯直达

1楼 [收藏(0)] [报告]

发表于 2010-05-11 09:21 |只看该作者 |倒序浏览

本帖最后由冷风于 2010-05-11 09:33 编辑

环境 RHEL54 x64
自带的mysql
配置了主从
我发现如果从服务器不当机，数据都没有问题
如果从服务器关机，然后主服务器上插入多条记录，启动从服务器的时候就会报Duplicate entry错误，必须重新Change MASTER，slave的状态才能恢复正常，而且即使状态对了，数据库里还是少了主的几条记录，这是什么原因造成的
master状态
mysql> show master status\G
*************************** 1. row ***************************
         File: master-bin.000006
      Position: 54138
Binlog_Do_DB:
Binlog_Ignore_DB: mysql
1 row in set (0.01 sec)

slave：
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)

mysql> CHANGE MASTER to MASTER_LOG_FILE='master-bin.000006',MASTER_LOG_POS=54138;
Query OK, 0 rows affected (0.03 sec)

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G
*************************** 1. row ***************************
         Slave_IO_State: Waiting for master to send event
            Master_Host: 192.168.147.128
            Master_User: rep
            Master_Port: 3306
            Connect_Retry: 60
         Master_Log_File: master-bin.000006
      Read_Master_Log_Pos: 54138
         Relay_Log_File: slave-relay-bin.000002
            Relay_Log_Pos: 236
   Relay_Master_Log_File: master-bin.000006
         Slave_IO_Running: Yes
      Slave_SQL_Running: Yes
         Replicate_Do_DB: redcap
      Replicate_Ignore_DB: mysql
      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: 54138
         Relay_Log_Space: 236
         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
1 row in set (0.00 sec)

看状态都对，但是就是数据库里数据少了好几条。顺便说一下，我的数据库是phpwind（一个论坛）的数据库，在关闭了从服务器以后我在一个版块发了六个帖子，但是从服务器启动起来强制同步数据后我只看见2个帖子

文库|博客

冷风

丰衣足食

论坛徽章:: 0

2楼 [报告]

发表于 2010-05-11 09:30 |只看该作者

master的my.cnf配置
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
server-id=1
log-bin=master-bin
log-bin-index=master-bin.index
set-variable=binlog-ignore-db=mysql

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

slave的my.cnf设置
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
server-id=2
master-host=192.168.147.128
master-user=rep
master-password=rep
master-port=3306
set-variable=replicate-ignore-db=mysql
set-variable=replicate-do-db=redcap
relay-log=slave-relay-bin
relay-log-index=slave-relay-bin.index

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid