前言:
最近遇到实例迁移的问题,数据迁完后还需要将数据库用户及权限迁移过去。进行逻辑备份时,我一般习惯将MySQL系统库排除掉,这样备份里面就不包含数据库用户相关信息了。这时候如果想迁移用户相关信息 可以采用以下三种方案,类似的 我们也可以采用以下三种方案来备份数据库账号相关信息。(本文方案针对MySQL5.7版本,其他版本稍有不同)
1.mysqldump逻辑导出用户相关信息
我们知道,数据库用户密码及权限相关信息保存在系统库mysql 里面。采用mysqldump可以将相关表数据导出来 如果有迁移用户的需求 我们可以按照需求在另外的实例中插入这些数据。下面我们来演示下:
#只导出mysql库中的user,db,tables_priv表数据 #如果你有针队column的赋权 可以再导出columns_priv表数据 #若数据库开启了GTID 导出时最好加上 --set-gtid-purged=OFF mysqldump -uroot -proot mysql user db tables_priv -t --skip-extended-insert > /tmp/user_info.sql #导出的具体信息 -- -- Dumping data for table `user` -- LOCK TABLES `user` WRITE; /*!40000 ALTER TABLE `user` DISABLE KEYS */; INSERT INTO `user` VALUES ('%','root','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','',_binary '',_binary '',_binary '',0,0,0,0,'mysql_native_password','* 81F5E21E35407D884A6CD4A731AEBFB6AF209E1B','N','2019-03-06 03:03:15',NULL,'N'); INSERT INTO `user` VALUES ('localhost','mysql.session','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','Y','N','N','N','N','N','N','N','N','N','N','N','N','N','',_binary '',_binary '',_binary '',0,0,0,0,'mysql_na tive_password','*THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE','N','2019-03-06 02:57:40',NULL,'Y'); INSERT INTO `user` VALUES ('localhost','mysql.sys','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','',_binary '',_binary '',_binary '',0,0,0,0,'mysql_native _password','*THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE','N','2019-03-06 02:57:40',NULL,'Y'); INSERT INTO `user` VALUES ('%','test','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','',_binary '',_binary '',_binary '',0,0,0,0,'mysql_native_password','* 94BDCEBE19083CE2A1F959FD02F964C7AF4CFC29','N','2019-04-19 06:24:54',NULL,'N'); INSERT INTO `user` VALUES ('%','read','Y','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','',_binary '',_binary '',_binary '',0,0,0,0,'mysql_native_password','* 2158DEFBE7B6FC24585930DF63794A2A44F22736','N','2019-04-19 06:27:45',NULL,'N'); INSERT INTO `user` VALUES ('%','test_user','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','',_binary '',_binary '',_binary '',0,0,0,0,'mysql_native_passwor d','*8A447777509932F0ED07ADB033562027D95A0F17','N','2019-04-19 06:29:38',NULL,'N'); /*!40000 ALTER TABLE `user` ENABLE KEYS */; UNLOCK TABLES; -- -- Dumping data for table `db` -- LOCK TABLES `db` WRITE; /*!40000 ALTER TABLE `db` DISABLE KEYS */; INSERT INTO `db` VALUES ('localhost','performance_schema','mysql.session','Y','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N'); INSERT INTO `db` VALUES ('localhost','sys','mysql.sys','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','N','Y'); INSERT INTO `db` VALUES ('%','test_db','test','Y','Y','Y','Y','Y','Y','N','N','N','Y','N','N','Y','Y','N','N','Y','N','N'); /*!40000 ALTER TABLE `db` ENABLE KEYS */; UNLOCK TABLES; -- -- Dumping data for table `tables_priv` -- LOCK TABLES `tables_priv` WRITE; /*!40000 ALTER TABLE `tables_priv` DISABLE KEYS */; INSERT INTO `tables_priv` VALUES ('localhost','mysql','mysql.session','user','boot@connecting host','0000-00-00 00:00:00','Select',''); INSERT INTO `tables_priv` VALUES ('localhost','sys','mysql.sys','sys_config','root@localhost','2019-03-06 02:57:40','Select',''); INSERT INTO `tables_priv` VALUES ('%','test_db','test_user','t1','root@localhost','0000-00-00 00:00:00','Select,Insert,Update,Delete',''); /*!40000 ALTER TABLE `tables_priv` ENABLE KEYS */; UNLOCK TABLES; #在新的实例插入所需数据 就可以创建出相同的用户及权限了MySQL如何优雅的备份账号相关信息
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