mysql主从复制(gtid模式)修改主库ip

环境:
OS:Centos 7
DB:mysql 5.7.29

 

基于GTID复制的主从环境,主库修改了ip后,修改从库同步信息(不需要指定master_log_file和master_log_pos)

1.停掉从库
stop slave;

 

2.查看从库状态

mysql> show slave status \G;
*************************** 1. row ***************************
               Slave_IO_State: 
                  Master_Host: 192.168.1.105
                  Master_User: repl
                  Master_Port: 13306
                Connect_Retry: 60
              Master_Log_File: binlog.000007
          Read_Master_Log_Pos: 194
               Relay_Log_File: relaylog-binlog.000017
                Relay_Log_Pos: 401
        Relay_Master_Log_File: binlog.000007
             Slave_IO_Running: No
            Slave_SQL_Running: No
              Replicate_Do_DB: 
          Replicate_Ignore_DB: information_schema,performance_schema,sys
           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: 194
              Relay_Log_Space: 692
              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: 2003
                Last_IO_Error: error reconnecting to master 'repl@192.168.1.105:13306' - retry-time: 60  retries: 9
               Last_SQL_Errno: 0
               Last_SQL_Error: 
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 1
                  Master_UUID: 9ecf61e2-eed1-11ed-a4b0-080027e81195
             Master_Info_File: /opt/mysql57/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: 
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 230511 21:39:22
     Last_SQL_Error_Timestamp: 
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 9ecf61e2-eed1-11ed-a4b0-080027e81195:1-257
            Executed_Gtid_Set: 636915ca-ef98-11ed-a854-080027962264:1-836,
9ecf61e2-eed1-11ed-a4b0-080027e81195:1-257
                Auto_Position: 0
         Replicate_Rewrite_DB: 
                 Channel_Name: 
           Master_TLS_Version: 
1 row in set (0.00 sec)

ERROR: 
No query specified

 

我这里Auto_Position: 0

 

3.尝试清理主库的已经同步过的binlog
主库执行:
mysql> purge binary logs to 'binlog.000002';
Query OK, 0 rows affected (0.06 sec)

 

4.修改ip地址
change master to master_host='192.168.1.104',
master_port=13306,
master_user='repl',
master_password='mysql';

5.启动
start slave;

 

6.查看

mysql> show slave status \G;
*************************** 1. row ***************************
               Slave_IO_State: Queueing master event to the relay log
                  Master_Host: 192.168.1.104
                  Master_User: repl
                  Master_Port: 13306
                Connect_Retry: 60
              Master_Log_File: binlog.000002 ##这里会重新同步主库的binlog,因为binlog.000001已经清理掉了,会从binlog.000002开始
          Read_Master_Log_Pos: 34780157
               Relay_Log_File: relaylog-binlog.000002
                Relay_Log_Pos: 32643225
        Relay_Master_Log_File: binlog.000002
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: information_schema,performance_schema,sys
           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: 32643058
              Relay_Log_Space: 34780531
              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: 57587
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: 9ecf61e2-eed1-11ed-a4b0-080027e81195
             Master_Info_File: /opt/mysql57/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 
     Last_SQL_Error_Timestamp: 
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 9ecf61e2-eed1-11ed-a4b0-080027e81195:80-95 ##这里从80开始接收,是因为1-79在binlog.000001,已经清理掉
            Executed_Gtid_Set: 636915ca-ef98-11ed-a854-080027962264:1-836,
9ecf61e2-eed1-11ed-a4b0-080027e81195:1-257
                Auto_Position: 0
         Replicate_Rewrite_DB: 
                 Channel_Name: 
           Master_TLS_Version: 
1 row in set (0.06 sec)

ERROR: 
No query specified