HUBzero makes extensive use of OpenVZ containers so it is recommended to use the OpenVZ enabled kernel on all HUBzero servers.

# yum install -y hubzero-openvz

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skip for now, just reboot the server after installing 
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# hzcms configure openvz --enable

You should reboot the server after the openvz kernel is installed.

# reboot

# vzlist
Container(s) not found

The vzlist command might list the containers currently running if you check this on a running hub. As long as the command does not return an error, your setup was successful.