RESOLUTION
vzagent0 account is created inside Service VE during Virtuozzo installation and is used to register Virtuozzo servers in HSPcomplete and Virtuozzo Management Console (VZMC) and to login to Virtuozzo Control Center (VZCC).To change vzagent0 password you may use one of the following commands on Virtuozzo server:
vzctl set 1 --userpasswd vzagent0:<new_password> or
vzctl exec2 1 passwd vzagent0
New password: <new_password> Keywords: vzagent0, password