Tuesday, September 1, 2026 Field Signal · est. 2026

Field Signal

I build infrastructure agents and private AI systems, and I keep a vSphere lab around to break them in. This is where I write down what actually happened — the theory that turned out to be wrong, the error string worth searching for, and the things that only show up once you run something for real.

The GPU I need does not live in my house. So I rent someone else's and pretend it does.

Latest

The GPU I need does not live in my house. So I rent someone else's and pretend it does.

My homelab is great at everything except the one thing AI needs: a real GPU. So I rent one by the hour from a neo-cloud, pull it into the tailnet, and tear it down in a finally block. The buy-versus-rent math, priced honestly.

Writing Newest first

Self-hosting inference beats the API at 21 billion tokens a month. That is 8,000 tokens per second, forever.

Working out when self-hosting an open model actually beats a managed inference API, using published list prices. The breakeven is not a price per token, it is a sustained throughput you have to hit every second of every day.

Aug 18, 2026 · 17 min · Build Log

Kubernetes That Stops Being a Second Platform

A hands-on build log of enabling vSphere Kubernetes Service end to end — the wizard, the networking, the gate everyone forgets — and an honest case for why VKS fits if you already run vSphere.

Aug 15, 2026 · 12 min · Build Log

I wanted private AI. What I had to decide was Kubernetes.

The GPU is the part everyone budgets for and the part I never needed. An open model runs privately on CPUs you already own — so the real decision is the platform underneath it.

Aug 15, 2026 · 6 min · Build Log

I tried to make my laptop AI twice as fast. I found the wall instead.

A build log on speculative decoding, memory bandwidth, and why the honest answer to 'can we make it faster?' was 'not today' — plus exactly why, and why that's still a good day's work.

Aug 13, 2026 · 5 min · Build Log

Meta's Muse Glimmer runs on my laptop with the Wi-Fi off

I put Meta's new open-weight Muse Glimmer 30B on my MacBook, pulled the Wi-Fi, and it kept working. A build log on local AI — and why running it yourself is an architecture decision, not a hobby.

Aug 12, 2026 · 5 min · Build Log

The upgrade worked. Turning the machine back on is what failed.

An agent-driven ESXi upgrade that succeeded, a restore step that failed on a precondition nobody checked, and a rollback that retried the exact action that had just failed. What I got wrong.

Aug 5, 2026 · 10 min · Build Log

A 2.8-trillion-parameter model fits in 8 GB of RAM. It writes one token every 32 seconds.

Two new engines run frontier Mixture-of-Experts models on consumer hardware by paging experts off SSD instead of holding them in memory. Why that works, why it is slow, why C is not the reason, what a GPU does and does not fix, and what it means for air-gapped estates and hardware refresh planning.

Aug 4, 2026 · 14 min · Build Log

Agents are a new class of workload. Private cloud is where you contain them.

An agent with a kubeconfig is not an information system, it is an operator. Part 1 of a series on why least privilege, RBAC and audit logs all quietly assume the actor is deterministic, and how VCF and VKS primitives bound something that is not.

Aug 2, 2026 · 14 min · Build Log

I run Pi-hole on Kubernetes. There is no Pi.

How I added DNS-level ad-blocking to my whole Tailscale network with Pi-hole, running it as a container with its own Tailscale identity instead of on a Raspberry Pi, why the tailnet is the right network for it, and the honest state of a build that is 44 minutes old.

Aug 1, 2026 · 6 min · Build Log

There is no cloud. It's a Dell workstation in a spare room.

A mid-2026 state-of-the-homelab: one Dell workstation running Proxmox, a Raspberry Pi, a bare-metal ESXi box, and twelve Tailscale devices running real websites and a fleet of agents, with no public IP and one deliberate single point of failure.

Jul 31, 2026 · 7 min · Build Log

I didn't give my agents a vector database. I gave them 126 text files.

A working design for agent memory that survives the restart: one fact per Markdown file, an index loaded every session, wiki-links instead of a graph database, and the ways it quietly rots. Measured from a real store of 126 memories.

Jul 31, 2026 · 8 min · Build Log

I built a machine that wrote 278 articles. Nobody read them.

Apollo published 278 articles in 14 weeks to zero subscribers. A postmortem of a pipeline that worked as software and failed as a publication.

Jul 29, 2026 · 8 min · Build Log

VKS on the nested lab: everything before Workload Management

A build log for putting VKS (vSphere Kubernetes Service) on a resource-constrained nested vSphere lab: the license gate, a fresh vCenter 9.1, three prerequisite failures, and why Workload Management is still unenabled.

Jul 28, 2026 · 6 min · Build Log

I built a personal AI that decides when to interrupt me. In 30 days it decided no 1,784 times.

A build log for Supra, my personal AI system: skill dispatch via tool use, a proactive judge stuck in cold-start deadlock, and a self-improvement loop that mined a test fixture.

Jul 24, 2026 · 8 min · Agents

DELPHI: a Monte Carlo agent for my Superflex fantasy draft

How I built DELPHI, a Monte Carlo simulator for a ten-team Superflex PPR fantasy football league, used it to rank draft strategies against the room, and then audited its four modeling flaws: correlation, circularity, frozen in-season assets, and floored-Normal scoring.

Jul 22, 2026 · 6 min · Build Log

Giving Rhodes write access to my infrastructure

What it took to let an agent restart VMs and delete snapshots on real infrastructure: the tier model, the guardrails in code, and the bugs found along the way.

Jul 19, 2026 · 8 min · Agents

Standing up vCenter 9.1 in a nested lab without ever mounting the ISO

A build log for deploying VCSA 9.1 onto a mixed nested/bare-metal ESXi lab: hybrid ISO extraction, thin-provisioning prechecks, pyvmomi inventory, and licensing walls.

Jul 14, 2026 · 8 min · Build Log

The OEM NVMe that ESXi 9.1 refuses to see

Bare-metal ESXi 9.1 on an EliteDesk 800 G6: the bundled SK hynix BC511 reports an all-zero NGUID, so ESXi never creates a device. What actually fixed it.

Jul 9, 2026 · 6 min · Build Log

Topics What I write about

homelab 8 Build Log 5 vsphere 5 build-log 4 agents 3 kubernetes 3 Kubernetes 3 proxmox 3 tailscale 3 VKS 3 vSphere 3 ai-agents 2 Apple Silicon 2 esxi 2 llm 2 Local AI 2 Platform Engineering 2 postmortem 2 Private AI 2 rhodes 2 vcf 2 vks 2 agent-memory 1 air-gap 1 anthropic-api 1 antrea 1 automation 1 Benchmarks 1 Broadcom 1 Capacity Planning 1 Cluster API 1 context-engineering 1 cost 1 Cost 1 DFlash 1 DGX Spark 1 dns 1 fantasy-football 1 field-signal 1 governance 1 gpu 1 GPU 1 hardware 1 inference 1 Inference 1 infrastructure 1 lambda 1 lifecycle-manager 1 llama.cpp 1 local-llm 1 Memory Bandwidth 1 Meta 1 mixture-of-experts 1 modeling 1 monte-carlo 1 Muse Glimmer 1 nebius 1 Nebius 1 neo-cloud 1 nested-virtualization 1 nflverse 1 nsx 1 nvme 1 observability 1 On-device 1 On-device AI 1 Open Weights 1 personal-ai 1 pihole 1 private-ai 1 publishing 1 python 1 quantization 1 Rancher 1 RTX 5090 1 security 1 self-hosting 1 simulation 1 Speculative Decoding 1 Tanzu 1 telegram 1 troubleshooting 1 vcenter 1 VCF 9 1 vercel 1 vLLM 1 VMware 1 wireguard 1

Automated desks Not written by me

These three desks are machine-written. A language model drafts each piece from sourced daily briefs and publishes it without individual human review, under a desk byline rather than mine. They are kept separate from my own writing deliberately. Everything ever published is in the archive.

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