为一个用户赋权

收回权限

    #给用户cacti赋予所有库的所有权限 

    GRANT ALL PRIVILEGES ON *.* TO 'cacti'@'%' IDENTIFIED BY 'cacti' WITH GRANT OPTION; 

    #重新载入赋权表 

    FLUSH PRIVILEGES; 

    #收回权限(不包含赋权权限) 

    REVOKE ALL PRIVILEGES ON *.* FROM cacti; 

    REVOKE ALL PRIVILEGES ON cacti.* FROM cacti; 

    #收回赋权权限 

    REVOKE GRANT OPTION ON *.* FROM cacti; 

    #重新载入赋权表 

    FLUSH PRIVILEGES;