mysql Slave_IO_Running:NO（解决方法)

Master slave 复制错误
Description：
Slave_IO_Running:NO
Slave_SQL_Running:Yes
Seconds_Behind_Master: NULL
本人遇到的Slave_IO_Running:NO的情况有下面两种：
1. 在配置slave同步时因为slave访问master没有权限导致；
2. master上的mysql-bin.xxxxxx文件全被我误删除了；
对于第一种情况，仔细检查数据库访问权限即可解决；
对于第二种情况，下面稍微详细介绍一下：
mysql> show slave status\G
*************************** 1. row ***************************
         Slave_IO_State:
            Master_Host: 192.168.3.21
            Master_User: slave
            Master_Port: 3307
            Connect_Retry: 60
         Master_Log_File: mysql-bin.000016
      Read_Master_Log_Pos: 173
         Relay_Log_File: mysqld-relay-bin.000008
            Relay_Log_Pos: 98
   Relay_Master_Log_File: mysql-bin.000016
         Slave_IO_Running: No
      Slave_SQL_Running: Yes
         Replicate_Do_DB:
      Replicate_Ignore_DB:
      Replicate_Do_Table:
   Replicate_Ignore_Table: br>                Last_Errno: 0
               Last_Error:
            Skip_Counter: 0
      Exec_Master_Log_Pos: 173
         Relay_Log_Space: 98
         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: NULL
1 row in set (0.00 sec)
[root@slave mysql]# tail /var/log/mysqld.log
081223 15:51:50  InnoDB: Started; log sequence number 0 43655
081223 15:51:51 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when
this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-
log=/var/run/mysqld/mysqld-relay-bin' to avoid this problem.
081223 15:51:51 [Note] /usr/libexec/mysqld: ready for connections.
Version: '5.0.45-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3307  Source distribution
081223 15:51:51 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.000016' at
position 173, relay log '/var/run/mysqld/mysqld-relay-bin.000007' position: 98
081223 15:51:51 [Note] Slave I/O thread: connected to master
[email='slave@192.168.3.21:3307']'slave@192.168.3.21:3307'[/email]
,  replication started
in log 'mysql-bin.000016' at position 173
081223 15:51:51 [ERROR] Error reading packet from server: Could not find first log file name in binary log
index file ( server_errno=1236)
081223 15:51:51 [ERROR] Got fatal error 1236: 'Could not find first log file name in binary log index file'
from master when reading data from binary log
081223 15:51:51 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000016', position 173
081223 15:51:58 [Note] Error reading relay log event: slave SQL thread was killed
解决步骤：
重启master库：service mysqld restart
mysql> show master status;
+------------------+----------+--------------+------------------+
| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |    98 |             |                |
+------------------+----------+--------------+------------------+
mysql> slave stop;
mysql> change master to Master_Log_File='mysql-bin.000001',Master_Log_Pos=98;
mysql> slave start;
mysql> show slave status\G
*************************** 1. row ***************************
         Slave_IO_State: Waiting for master to send event
            Master_Host: 192.168.3.21
            Master_User: slave
            Master_Port: 3307
            Connect_Retry: 60
         Master_Log_File: mysql-bin.000001
      Read_Master_Log_Pos: 98
         Relay_Log_File: mysqld-relay-bin.000002
            Relay_Log_Pos: 235
   Relay_Master_Log_File: mysql-bin.000001
         Slave_IO_Running: Yes
      Slave_SQL_Running: Yes
         Replicate_Do_DB:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
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: 98
         Relay_Log_Space: 235
         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)

转载于:https://blog.51cto.com/ppp1013/447810

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