mysql主从配置失败，主从通讯失败

Posted 2020-12-25

配置mysql主从的时候，检查slave状态，发现报错信息，

Error 'The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement' on query.

mysql> show slave statusG
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.100.100
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: BP.000001
          Read_Master_Log_Pos: 1047
               Relay_Log_File: BP2-relay-bin.000002
                Relay_Log_Pos: 276
        Relay_Master_Log_File: BP.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: No
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 1290
                   Last_Error: Error 'The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement' on query. Default database: ''. Query: 'GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.100.101' IDENTIFIED BY PASSWORD '*137BC20D2DD742D4394762A7F009AE373961DF0D''
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 120
              Relay_Log_Space: 1374
              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: 0
                Last_IO_Error:
               Last_SQL_Errno: 1290
               Last_SQL_Error: Error 'The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement' on query. Default database: ''. Query: 'GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.100.101' IDENTIFIED BY PASSWORD '*137BC20D2DD742D4394762A7F009AE373961DF0D''
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 100
                  Master_UUID: 274d9644-7398-11e8-8f4c-000c29a272ec
             Master_Info_File: /data/mysql/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State:
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp: 180725 10:41:22
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row in set (0.00 sec)

分析：

mysql验证失败-->密码不对-->排除，因为在my.cnf配置了skip-grant跳过密码验证配置参数

         -->配置文件-->是否skip-grant参数影响了主与从之间的通讯-->去掉#skip-grant参数后解决

解决方法：

把mysql配置文件my.cnf的skip-grant参数删掉，或者注释掉即可。

[mysqld]
datadir=/data/mysql
socket=/tmp/mysql.sock
server-id=101
#skip-grant