ResolutionSometimes it is needed to use "Parallels Virtuozzo Containers 4.0" as old Virtuozzo 3.x node, in so named "compatibility mode" (compatible with Virtuozzo Agent protocol from Virtuozzo 3.x), e.g. when registering the node in PBAS interface or in "Virtuozzo Management Console 3.0" GUI.
Parallels Agent in Parallels Virtuozzo Containers 4.0 may be started in compatibility mode using this command on hardware node:
# /usr/sbin/vzagent_compat_ctl start
This command should be executed one time only, it will apply this change permanently. Also, this command does not affect vzagent0 password.