Jocelyn Choo

Solutions Engineer → DevOps

runs a family media platform and a DevOps lab off three machines in the same rack.

Building a 3-node Proxmox homelab, GitOps pipelines, and infrastructure-as-code. Solutions Engineer by day, DevOps by night.

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family-prod · uptime 99.9%

pg. 01 — profile

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Collection · pg. 02

Great things are yet to be done

Journal Entry

Currently a Solutions Engineer in Hong Kong, building homelab-infra on the side — a 3-node Proxmox cluster that's both my family's private cloud and a production-grade DevOps playground: Terraform, Ansible, K3s, ArgoCD, and CI/CD, all as code.

"Live like no one else today, so that you can live like no one else tomorrow." — Dave Ramsey

Experience 2+ yrs System Engineering 1+ yr Backend Development

Education B.Sc. Internet & Multimedia Technologies Associate of Arts in Computer Science

Collection · pg. 03

The toolchain

DevOps Tools

Core stack

✕Linux — experienced
•Shell & Bash scripting — intermediate
•Build tools — intermediate
✕Python — experienced
✕Docker — experienced
○GitOps · ArgoCD — basic

CI/CD Automation

Pipeline & cloud

•Jenkins — intermediate
•AWS Cloud — intermediate
○AWS EKS — basic
○Kubernetes — basic
○Terraform — basic
○Ansible — basic
○Prometheus & Grafana — basic
○GitLab CI — basic

Collection · pg. 04

homelab-infra

A 3-node Proxmox homelab, rebuilt from git in under 30 minutes — a family media platform and a Kubernetes/DevOps playground, everything as code. The lab tier is torn down and rebuilt from this repo on purpose, monthly: if it isn't in git, it doesn't exist.

Proxmox VE Terraform Ansible K3s ArgoCD Jenkins · JCasC GitLab CI Prometheus · Grafana · Loki Cloudflare Tunnel

GitHub Repo Design Decisions (ADRs)

Diagram

Architecture pg. 05

Traffic enters through a Cloudflare Tunnel (no open ports) and hits one reverse proxy; only user-facing apps are public. Admin planes (Proxmox, Jenkins, Grafana) sit behind Tailscale. Quorum survives losing the disposable lab node.

○ planned

5-Minute Demo Video pg. 06

One git push travels through CI, security scanning (Trivy), and ArgoCD to a live Kubernetes rollout — recorded end to end.

○ phase 2

Live Proof pg. 07

Public Grafana snapshot / Uptime Kuma status page showing the real cluster, really running — landing once observability is migrated.

○ phase 5

The AWS Party Trick pg. 08

./demo.sh up stands up a mini k3s lab on AWS spot in ~4 minutes and prints a live URL; ./demo.sh down tears it down — a few cents per run, nothing left behind.

Migrated

Write-ups pg. 09

>Migrating my family's media platform to Proxmox — with zero downtime
>GitOps-ing my homelab with ArgoCD
>What rebuilding my lab from scratch taught me about IaC