Alejandro Bonilla

I design platforms that run virtual machines, containers and AI workloads side by side: Kubernetes, SUSE Virtualization, storage and NVIDIA GPUs. I test it all on real hardware in my home lab and write up what works.

Latest from the blog

How Many vCPUs and How Much Memory Can a Harvester VM Actually Have? Oct 20, 2026
Testing real vCPU and memory ceilings on Harvester HCI across ARM64 and x86_64: a hard 512-vCPU wall baked into QEMU’s ARM machine type, a CPU-model address-width wall that caps …
One network across four clusters: Kube-OVN interconnection on SUSE Virtualization Oct 20, 2026
I connected VMs on separate SUSE Virtualization clusters through one routed network with Kube-OVN’s OVN interconnection (OVN-IC): about 1–2 ms between sites, and a data plane that …
NVIDIA AI Cluster Runtime 1.1 deploys with Rancher Fleet and supports SLES Oct 19, 2026
NVIDIA’s AI Cluster Runtime 1.1 shipped today with two features I contributed: a Rancher Fleet deployer and SUSE Linux Enterprise Server support on RKE2. Here’s what they do, plus …
Reachy Mini on a local AI stack: vision, face recognition and a menu-bar remote Oct 19, 2026
I pointed a Reachy Mini robot at my own Kubernetes-hosted speech, language and vision models. Here’s how it sees with a VLM, why face recognition uses embeddings instead, and the …
Running DeepSeek V4 Flash on two DGX Sparks with Kubernetes and Codex CLI Oct 19, 2026
DeepSeek V4 Flash needs more memory than one DGX Spark has. This guide splits it across two Sparks with vLLM tensor parallelism over RoCE, reaches 51 tokens per second, and …

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Open source work

Harvester CLI

Maintainer

A kubectl-style command line for creating and managing VMs on SUSE Virtualization. v0.5.0 supports 1.9, prints GitOps-ready YAML and installs with Homebrew.

Repo · Post

SUSE Virtualization (Harvester)

Contributor

PXE network boot and high-performance disk settings in the UI, Cloudbase-Init for Windows guests, and the Windows VM templates with Hyper-V enlightenments.

UI extension · Post

NVIDIA AI Cluster Runtime

Contributor

A Rancher Fleet deployer and SUSE Linux Enterprise Server support on RKE2, both shipped in AICR 1.1.

Repo · Post

Longhorn v2 over RDMA

Contributor

RoCEv2 transport for Longhorn's SPDK-based v2 data engine, in review across four repositories.

PR · Post

LVM CSI driver

Contributor

Thin-pool chunk-size tuning and snapshot fixes for SUSE Virtualization's LVM storage, plus LUKS2 encryption at rest (in review).

Repo · Post

Windows golden images

Author

Build a reusable Windows Server image for SUSE Virtualization with VMDP drivers, Cloudbase-Init and sysprep, using kubectl or Terraform.

Repo · Post