mysql 操作
grant SELECT,UPDATE,DELETE,INSERT,ALTER,CREATE on test_grant.* to 'testuser1'@'%' with grant option;
## 新建复制用户
GRANT REPLICATION SLAVE ON *.* TO 'testuser1'@'%' with grant option;
## 忘记密码【skip-grant-tables】
-- set password for 'root'@'localhost'=‘123456’;