, every, is my centos7.6 systems have been installed on a computer, use the U disk is installed, then the remote connection is good, after 1) installed pagoda, the data to the pagoda, but there is not stable, sometimes the connection will not come, what is this problem, 2) background, then the login data entered after going to upload information, but a little more, I will points several computer login an account, but no, not a login account on multiple computers, don't know is there any way to modify?