Does VZ support querying the number of VMs currently running?

[travisghansen]

I'm trying to hack on a 3rd party project (https://github.com/agoda-com/macOS-vz-kubelet/tree/main) and I see some manual maintenance of counters in the code (which has logic problems anyway) and I figure a better approach is to simply ask the OS if there is space for another VM to run currently.

Is this a thing? Does this library have such a method implemented? (sorry, by go skills are pretty lacking)

For example, there could be multiple virtual machine monitors running without knowledge of if or how many machines the other may have started...so going straight to the os is a better approach.

Thanks!

[cfergeau]

I don’t know of any such API, the virtualization framework lets you build this kind of virt management layer on top of its APIs.
Maybe there’s an apple specific process running per-VM which you could look for, or someting in sysctl?

[travisghansen]

Ok. I don’t really know if they have a call that is possible to implement into this library to get that info.