MySQL 5.7 GTID主从搭建

1、主库

gtid_mode=on
enforce_gtid_consistency=on
log_bin=on

2、从库

servier-id
gtid_mode=on
enforce_gtid_consistency=on
log_slave_updates=1

查看 uuid

# 主库的

mysql> show variables like '%uuid%';
+---------------+--------------------------------------+
| Variable_name | Value                                |
+---------------+--------------------------------------+
| server_uuid   | 8fccbadb-9e86-11ea-8a13-000c293c7a8e |
+---------------+--------------------------------------+


# 从库的

mysql> show variables like '%uuid%';
+---------------+--------------------------------------+
| Variable_name | Value                                |
+---------------+--------------------------------------+
| server_uuid   | 89d50119-d587-11ea-ac01-52540009b164 |
+---------------+--------------------------------------+

3、从库配置

change master to \
master_host='192.168.1.81', \
master_user='Mysync',master_password='Abc@123456',master_auto_position=1;

4、查看从库

# 启用
mysql> start slave;

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.2.104
                  Master_User: mysync
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000004
          Read_Master_Log_Pos: 932
               Relay_Log_File: kvm108-relay-bin.000003
                Relay_Log_Pos: 1145
        Relay_Master_Log_File: mysql-bin.000004
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: school
          Replicate_Ignore_DB: mysql,information_schema
           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: 932
              Relay_Log_Space: 1353
              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: 104
                  Master_UUID: 8fccbadb-9e86-11ea-8a13-000c293c7a8e
             Master_Info_File: /var/lib/mysql/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: 8fccbadb-9e86-11ea-8a13-000c293c7a8e:1-4     # 从库已经接收到主库的事务编号
            Executed_Gtid_Set: 8fccbadb-9e86-11ea-8a13-000c293c7a8e:1-4     # 已经执行的事务编号
                Auto_Position: 1
         Replicate_Rewrite_DB: 
                 Channel_Name: 
           Master_TLS_Version: 
1 row in set (0.00 sec)

主从错误

1、1236错误

                Last_IO_Errno: 1236
                Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master has purged binary logs containing GTIDs that the slave requires.'

解决：

查看主库的 Executed_Gtid_Set

mysql> show master status;
+------------------+-----------+--------------+------------------+------------------------------------------------------------------------------------------------+
| File             | Position  | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set                                                                              |
+------------------+-----------+--------------+------------------+------------------------------------------------------------------------------------------------+
| mysql-bin.000616 | 479509052 |              |                  | 010af9c9-89eb-11ea-ab3f-ec0d9ac00bc4:1-1138277,
01aeb901-89eb-11ea-8496-6c92bf464e20:1-1012605 |
+------------------+-----------+--------------+------------------+------------------------------------------------------------------------------------------------+

 设置从库的 gtid_purged 值为 主库的 Executed_Gtid_Set

mysql> stop slave;

mysql> reset slave;

mysql> reset master;

mysql> set global gtid_purged="010af9c9-89eb-11ea-ab3f-ec0d9ac00bc4:1-1138277, \
01aeb901-89eb-11ea-8496-6c92bf464e20:1-1012605";

mysql> change master to \
master_host='192.168.1.81', \
master_user='Mysync',master_password='Abc@123456',master_auto_position=1;