Proxmox feartures

[powersupport]

Hi Can anyone advise below features are possible in proxmox setup,

1. Provide bare metal hypervisor;

2 Group physical compute resources into logical resource pools to segregate
resource allocation to Virtual Machine (VM);

3. Allow flexible configuration of CPU and Memory physical to virtual ratios;

4. Provide memory management services to reclaim unused memory from VMs
returning these resources to the virtual resource pool;

5. Allow the placement of restrictions on VMs via affinity rules;

6. Transfer VMs across physical host hardware; while at the same time, ability to
enforce the security policies imposed on the VMs during the course of
movement of the VMs;

7. Support replication of VM instances to a separate secondary compute host and
storage, enabling fast recovery of services during a failure; and

8. Support hot add of CPU and hot plug of memory resources to virtual instances without rebooting where the guest operating system permits.

Thank you

 

[mira]

I'll try to answer the questions as far as I understand them.

1) I'm not sure what exactly you mean. Do you want to use QEMU/KVM directly without the Proxmox VE tooling? If so, just call `kvm` which is an alias to QEMU.

2) Do you mean to group maximum resources for a certain group of users, so that they can't exceed it? Or do you mean something else?

3) Can you provide an example for this? For CPUs you can set a `CPU limit` and `CPU units` [0]. Could this work for your use case?

4) This should be covered by Ballooning [1] which automatically gets unused memory from VMs with ballooning enabled, when the memory pressure on the host is over a certain threshold.

5) Currently you can only limit a VM to certain nodes, but no 'affinity' yet. But there's an open enhancement request in our bug tracker [2] which you can follow to receive updates when something in this regard changes.

6) Could you elaborate what exactly you mean by `enforce the security policies` here?

7) That's already possible in a cluster using ZFS or shared storage. If you have a standalone host or one outside the cluster you want to use as fallback, you could create your own mechanism using `pve-zsync` as long as you use ZFS on both hosts.

8) That's already possible for any OS in the last ~10 years by using the hotplug capabilities. Enable Memory and CPU hotplug in the VM Options. Start the VM and then increase memory and CPU. This be done online.


[0] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#qm_virtual_machines_settings (10.2.5)
[1] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#chapter_virtual_machines (10.2.6)
[2] https://bugzilla.proxmox.com/show_bug.cgi?id=2115