Article ID: 126378, created on Jul 31, 2015, last review on Jun 17, 2016

  • Applies to:
  • Virtual Automation


Virtual Automation (PVA) is a flexible and easy-to-use administration tool designed for managing physical servers with Virtuozzo Containers or Parallels Server Bare Metal or Parallels Cloud Server software. With PVA, you can create groups of physical servers and perform both collective and individual administration operations on these groups. Moreover, you can manage the virtual environments residing on the registered physical servers: their productivity and resources, system tasks and processes, configuration, and much more.

In order to find out the latest versions of PVA agent and it`s compatibility with other Odin products visit:

112297 Parallels Virtual Automation builds, releases, and supported virtualization products

To avoid possible compatibility issues between PVA Agent on virtualization nodes and PVA MN it is highly recommended to have the same version of PVA Agent and PVA MN (or the closest versions possible) .

6787 How to check build number of PVA currently installed

123544 How to keep PVA Agent and Management Node installation on Linux up-to-date?

113071 How to install/reinstall/upgrade PVA Agent on PCS 6, PSBM 5, or PVCfL 4.7 HW Node

121381 How to install/reinstall/upgrade PVA Agent on PCW HW Node


For basic PVA troubleshooting steps, see:

6981 Parallels Virtual Automation troubleshooting

Before you try to register a node, check:

9516 Which ports should be opened on Parallels Virtual Automation (PVA) Slave Nodes and on PVA Management Node?

  1. When PVA MN cannot reach the virtualization node over the network, an attempt to register a new node will fail with:

    An error occurred during the registration. Please verify the server address and user credentials
    Failed to register the physical server. Make sure that it has PVA Agent for Virtuozzo or for Parallels Server installed and is accessible via the network.
  2. If the new node registration stuck on "Connecting to Hardware Node":


Most probably PVA Agent does not respond. Try to restart PVA Agent on the virtualization node you are trying to register.


6893 [HOW TO] Unregister offline slave node from PVA MN?

123209 [HOW TO] Unregister Slave Node from PVA Group manually when PVA MN is offline

112904 [HOW TO] Set preferred IP address for PVA Agent communications

Known issues

126379 Cannot register/manage passive nodes of Windows cluster in PVA

120563 PVA Agent crashes when Hardware Node is registered in PVA Management Node

9757 Error when trying to add a cloned HW Node to a PVA group

Also see

120133 What impact is produced by restart of pva agent?

Search Words


Hardware node for PVA

Connecting to Hardware Node

offline slave node




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