[MySQL生产环境复制故障修复]Last_IO_Errno:1045Last_IO_Erro_MySQL

[MySQL生产环境复制故障修复] Last_IO_Errno: 1045 Last_IO_Error: error connecting to master 'replication@

1 修复集群，start slave 报错如下：

[sql] mysql> stop slave;  Query OK, 0 rows affected (0.10 sec)  [sql] -- 重新设置复制参数  mysql> change master to master_host='10.24.54.18',master_port=3306,master_user='replication',master_password='xxxxxx';  Query OK, 0 rows affected, 0 warnings (0.40 sec)    mysql> start slave;  Query OK, 0 rows affected (0.01 sec)    mysql>  show slave status/G;  *************************** 1. row ***************************                 Slave_IO_State: Connecting to master                    Master_Host: 10.24.54.18                    Master_User: replication                    Master_Port: 3306                  Connect_Retry: 60                Master_Log_File: mysql-bin.000002            Read_Master_Log_Pos: 1355028                 Relay_Log_File: mysql-relay-bin.000001                  Relay_Log_Pos: 4          Relay_Master_Log_File: mysql-bin.000002               Slave_IO_Running: Connecting              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: 1355028                Relay_Log_Space: 107                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  Master_SSL_Verify_Server_Cert: No                  Last_IO_Errno: 1045                  Last_IO_Error: error connecting to master 'replication@10.24.54.18:3306' - retry-time: 60  retries: 86400                 Last_SQL_Errno: 0                 Last_SQL_Error:     Replicate_Ignore_Server_Ids:                Master_Server_Id: 2  1 row in set (0.00 sec)  

-- 报错如下： Last_IO_Errno: 1045

看问题，一开始怀疑是密码问题，但是密码都是复制上来的，没有变动，问题不大，还是看看check下别的情况吧。

2 ，check问题所在，ping ip地址，是OK的。

[python] [xxx@xxx-c004db1 shared]$ ping 10.24.54.18  PING 10.24.54.18 (10.24.54.18) 56(84) bytes of data.  64 bytes from 10.24.54.18: icmp_seq=1 ttl=64 time=0.321 ms  64 bytes from 10.24.54.18: icmp_seq=2 ttl=64 time=0.370 ms  ^C  --- 10.24.54.18 ping statistics ---  2 packets transmitted, 2 received, 0% packet loss, time 1417ms  rtt min/avg/max/mdev = 0.321/0.345/0.370/0.030 ms  [xxx@xxx-c004db1 shared]$   

3 ，access 数据库端口3306，也是OK的。

[python] [xxx@xxx-c004db1 shared]$ ssh -v -p3306 10.24.54.18   OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010  debug1: Reading configuration data /etc/ssh/ssh_config  debug1: Applying options for *  debug1: Connecting to 10.24.54.18 [10.24.54.18] port 3306.  debug1: Connection established.  debug1: identity file /home/xxx/.ssh/xxx type -1  debug1: identity file /home/xxx/.ssh/id_rsa type -1  debug1: identity file /home/xxx/.ssh/id_dsa type -1  debug1: ssh_exchange_identification: O  ^C  

4，关闭防火墙service iptables stop，然后重启slave，还是报 Last_IO_Errno: 1045错误。

5，远程访问主库mysql 服务，报错如下：

[python] [xxx@xxx-c004db1 shared]$ mysql -h 10.24.54.18 -ureplication -pxxx  ERROR 1045 (28000): Access denied for user 'replication'@'xxx-xxx.abn-sjl.ea.com' (using password: YES)  [xxx@xxx-c004db1 shared]$   

仔细检查帐户，发现原来是执行grant语句的时候，密码串里面多了一个空格导致，同事的文本编辑器里面空格显示不明显，所以没有发现。

6，修复：去掉空格，重新执行grant语句，再重新启动slave，OK。

[sql] mysql> show slave status/G  *************************** 1. row ***************************                 Slave_IO_State: Waiting for master to send event                    Master_Host: 10.24.54.18                    Master_User: replication                    Master_Port: 3306                  Connect_Retry: 60                Master_Log_File: mysql-bin.000660            Read_Master_Log_Pos: 34886442                 Relay_Log_File: mysql-relay-bin.001320                  Relay_Log_Pos: 253          Relay_Master_Log_File: mysql-bin.000660               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: 34886442                Relay_Log_Space: 452                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: 2  1 row in set (0.00 sec)  

总结：DBA最重要的一点：细心，与大家共勉