主健冲突或数据不一致的情况： (1)停止slave进程 STOP SLAVE; (2)设置事务号，事务号从Retrieved_Gtid_Set获取 SET @@SESSION.GTID_NEXT= 'xxxxxxxxxxx' (3)设置空事务 BEGIN; COMMIT; (4)恢复事务号 SET SESSION GTID_NEXT = AUTOMATIC; (5)启动slave进程 START SLAVE; ----------------------------------------------------------------------------------------
5.reset master信息
mysql> reset master;
Query OK, 0 rows affected (0.11 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 154 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> show global variables like '%gtid%';
+----------------------------------+-------+
| Variable_name | Value |
+----------------------------------+-------+
| binlog_gtid_simple_recovery | ON |
| enforce_gtid_consistency | ON |
| gtid_executed | |
| gtid_executed_compression_period | 1000 |
| gtid_mode | ON |
| gtid_owned | |
| gtid_purged | |
| session_track_gtids | OFF |
+----------------------------------+-------+
8 rows in set (0.01 sec)
可以看到 gtid_executed 和 gtid_purged 已经没有gtid的信息了
--------------------------------------------------------------------------------------------------------------------------------
主从变成主主
change master to master_host='192.168.6.1',master_port=3306 , master_user='555',master_password='123456' ,master_auto_position=1;