Percona MySQL 5.6 主主復制環境報錯"Got fatal error 1236 from master.."

發布時間：2020-08-07 08:45:36 來源：ITPUB博客閱讀：137 作者：feelpurple 欄目：MySQL數據庫

Percona MySQL 5.6 主主復制環境報錯：
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State:
                  Master_Host: vsql02
                  Master_User: mysql_slave
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysqld-bin.000153
          Read_Master_Log_Pos: 120
               Relay_Log_File: mysqld-relay-bin.000002
                Relay_Log_Pos: 284
        Relay_Master_Log_File: mysqld-bin.000153
             Slave_IO_Running: No
            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: 120
              Relay_Log_Space: 601
              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: 1236
                Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
               Last_SQL_Errno: 0
               Last_SQL_Error:
Replicate_Ignore_Server_Ids:
             Master_Server_Id: 22
                  Master_UUID: d49b3291-289a-11e6-9b9b-2c44fd7f8364
             Master_Info_File: /data/dmcdb/mysql/database/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp: 160809 11:42:02
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row in set (0.00 sec)
報錯原因：
Master端二進制日志被刪除，導致Slave端的IO線程無法在Master端讀取到指定二進制日志
mysql> show variables like '%log%bin%';
+---------------------------------+----------------------------------------+
| Variable_name                   | Value                                  |
+---------------------------------+----------------------------------------+
| log_bin                         | ON                                     |
| log_bin_basename                | /var/lib/mysql/binlog/mysqld-bin       |
| log_bin_index                   | /var/lib/mysql/binlog/mysqld-bin.index |
| log_bin_trust_function_creators | ON                                     |
| log_bin_use_v1_row_events       | OFF                                    |
| sql_log_bin                     | ON                                     |
+---------------------------------+----------------------------------------+
6 rows in set (0.00 sec)
[root@dmcdb2 ~]# cd /var/lib/mysql/binlog
[root@dmcdb2 binlog]# ls -trl
total 1613364
-rw-r--r-- 1 root root 1651957529 Feb 17 14:29 3962.sql
-rw-rw---- 1 mysql mysql         40 Aug 9 11:16 mysqld-bin.index
-rw-rw---- 1 mysql mysql        174 Aug 9 14:17 mysqld-relay-bin.000001
-rw-rw---- 1 mysql mysql         92 Aug 9 14:17 mysqld-relay-bin.index
-rw-rw---- 1 mysql mysql        461 Aug 9 14:21 mysqld-bin.000155
-rw-rw---- 1 mysql mysql     104500 Aug 9 14:39 mysqld-relay-bin.000002
修復方法：
由于丟失了Master端的二進制日志，只能從現有的二進制日志重新配置復制環境
--Master端
mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File              | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| mysqld-bin.000155 |      120 |              |                  |                   |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
--Slave端
mysql> change master to master_host='vsql02', master_port=3306, master_user='mysql_slave', master_password='mysql_slave', master_log_file='mysqld-bin.000155', master_log_pos=120;
Query OK, 0 rows affected, 2 warnings (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: vsql02
                  Master_User: mysql_slave
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysqld-bin.000155
          Read_Master_Log_Pos: 120
               Relay_Log_File: mysqld-relay-bin.000002
                Relay_Log_Pos: 284
        Relay_Master_Log_File: mysqld-bin.000155
             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: 120
              Relay_Log_Space: 458
              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: 22
                  Master_UUID: d49b3291-289a-11e6-9b9b-2c44fd7f8364
             Master_Info_File: /data/dmcdb/mysql/database/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row in set (0.00 sec)
--Master端
mysql> unlock tables;
Query OK, 0 rows affected (0.00 sec)

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