How to detect virtual machine (VM)?

Question

Hi,

TLDR

I am looking for information about a way to detect the virtual machines that are installed on hosts that run an agent (linux and windows).

Context

I have a few hosts (Windows and Linux) where I have installed OCS agent. All my hosts runs virtual machine (Windows and/or Linux) on a hypervisor (VirtualBox for linux and some Windows host, Hyper-V for windows host).

All my hosts are able to report to my OCS server, but there is a problem. They do not report about the fact that they host virtual machine.

Question

I am wandering if there is a way to discover virtual machine. If so, how to discover virtual machines?

Search

I've found in the source code of agents (windows and linux) that there is a module that scan for VMs. I haven't found the way to run that module. Maybe it is always launch?

Thanks

Answer 1

Hi,

Which version of ocs server and agent are you running?

Regards

Frank

Answer 2

Same Problem here with OCS-NG_WINDOWS_AGENT_v2.6.0.0

All my hosts are able to report to my OCS server  they don't report informations about the virtual machines on it.

Answer 3

hi, maybe this helps to get an idea how it should look

Ocs server version : 2.3.1

https://github.com/OCSInventory-NG/OCSInventory-Server/issues/56

for older ocs-inventory versions

https://www.neteye-blog.com/2013/12/virtual-machine-inventory/

Kind regards

Answer 4

Hi,

OCS Windows agent don't inventory natively virtual machines hosted by hyper-v. A plugin is planed for that.

Regards

Frank

Answer 5

perhaps this helps to develop a plugin which maches the vm and the host.

The host name of a virtual machine is stored in the registry key

hkey_local_machine\Software\Microsoft\Virtual Machine\Guest\Parameters\PhysicalHostName

(you need to have the ocs-agent on every VM to geht this information)

i use this information via ocs-inventory registry query to detect on which host a virtual machine is running. yes i know you want to get the information from the hyper-v host.