[Sharing] Modern VM Provisioning Script for PVE 9.1 (PowerShell 7) with Auto-Topology & Windows 11 Support

[philippe.ve]

Hi everyone,

I’ve developed a PowerShell script designed to automate VM creation on Proxmox VE 9.1 clusters, and I’d like to share it with the community. My goal was to create a "one-stop-shop" script that follows modern best practices, especially for Windows 11 and high-performance Linux workloads.

Key Features:

• Smart CPU Topology: Automatically analyzes the target node's physical cores/sockets to configure the best virtual topology (1 vs 2 sockets) to avoid cache latency.
• NUMA & Hotplug Aware: Automatically enables NUMA for "Large VMs" or when RAM hotplug is requested (a technical requirement often overlooked).
• Windows 11 Ready: Provisions UEFI (OVMF) with the latest Microsoft 2023 certificates and TPM v2.0 in qcow2 format.
• Storage Optimized: Uses virtio-scsi-single for all drives and maps the CD-ROM to the SCSI bus instead of legacy IDE.
• Cluster & HA Integrated: Automatically selects an active node via LRM status and enrolls the VM into HA (Started state).
• SDN Support: Works with both classic Linux Bridges and new SDN Vnets.

Prerequisites:

• PowerShell 7+ (cross-platform).
• Proxmox VE 9.1+ (uses the latest API endpoints).

I am looking for feedback!I would love to hear your thoughts on:

1. Usage reports: How does it perform in your specific environment?
2. Improvements: Are there any features or optimizations you think are missing?
3. Code Review: Any suggestions to make the REST API calls more efficient?

You can find the script below (or link to your GitHub repository here).

https://github.com/anastra13/ProxmoxVE-VM-Provisioner

Thanks in advance for your testing and suggestions!

Best regards,Philippe