Symptoms

When I try to synchronize a Virtuozzo Container #12345 container.net I receive errors like

[2015/02/17 12:01:32] [ERROR] [12178] [HSPC::VZAgent::_report_problem] Error invoking external utility: vzctl set 12345 failed: Delete offline management
Adding offline management to Container(1): 4643

Hostname of the Container set: container.net

Unable to fork: Cannot allocate memory

Unable to fork: Cannot allocate memory

File resolv.conf was modified

Saved parameters for Container 12345 [undef]

[2015/02/17 12:01:53] [ERROR] [12178] [HSPC::MT::OM::VE::_report_problem] Error occurred while operating (sync) with Virtuozzo Container 12345

Cause

Outdated PVA Agent on the node of the Container #12345.

Resolution

Please verify the PVA Agent version against the article Parallels Virtual Automation builds, releases, and supported virtualization products and upgrade it if required as it is described in How to install/reinstall/upgrade PVA Agent on PCS 6, PSBM 5, or PVCfL 4.7 HW Node