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Building My Cloud-Native Homelab: Where Theory Meets Practice
Photo by Nikita Kachanovsky / Unsplash

Building My Cloud-Native Homelab: Where Theory Meets Practice

2 min Homelab

As a security engineer focused on cloud-native environments, DevSecOps, and Kubernetes, my homelab isn't just a passion project, it's a hands-on proving ground. It's where I experiment with bleeding-edge tech, simulate real-world threats, and harden systems under conditions too risky for production. Over time, it has grown from a Raspberry Pi to a hybrid, multi-cloud platform blending physical hardware and public cloud services.

đź“‚ Explore the code and configurations: My Homelab GitHub Repository

Why a Homelab?

Textbooks and whitepapers only go so far. Real-world cloud security issues surface in the gaps between design and deployment. For example, a system might be well-architected in theory but expose sensitive ports when deployed in a default cloud configuration. My homelab helps bridge that gap. Here's what it enables:

  • Simulating container attacks to test runtime defenses.
  • Practicing least-privilege configurations and security policies.
  • Testing emerging tools and technologies like eBPF, AI Security and Gateway APIs.
  • Automating my smart home while isolating vulnerable IoT devices.

Failures have been the best teachers. When a firewall rule locked me out of my Kubernetes cluster, or an upgrade broke my ingress, I had to troubleshoot under pressure. It felt like trying to fix your home Wi-Fi while the whole house is down but with more logs. These “lab disasters” became invaluable lessons.

Architecture in a Nutshell

My homelab is built for flexibility, security experimentation, and automation. You can think of it like a digital workshop with smart compartments—each handling different parts of cybersecurity and infrastructure:

  • Proxmox: Hosts VMs for multi-tenant environments and malware testing. Supports nested virtualization and efficient resource isolation.

  • Kubernetes Hybrid Cluster: Combines on-prem VMs with Oracle Cloud's Always-Free control plane. Runs workloads in Docker containers with security tools like Kyverno, Falco, NeuVector, and Cilium.

  • Observability & Response: Prometheus and Grafana handle monitoring. Wazuh acts as a SIEM, while n8n automates incident response workflows (e.g., isolating VMs, blocking IPs).

  • Identity Management: Keycloak manages authentication across services. Teleport ensures secure, auditable access. SPIFFE/SPIRE federate workload identity and automate mTLS.

  • DevSecOps & GitOps: ArgoCD drives Git-based deployments with policy checks and role-based controls. Akto validates APIs, and DefectDojo manages vulnerabilities end-to-end.

  • Data & Backups: Kafka powers event streaming and automation. MinIO and Kopia handle secure, multi-location backups with encryption and ransomware safeguards.

  • Networking: AdGuard filters DNS traffic; Traefik and Cilium Gateway API manage routing and TLS.

  • Home Automation & Media: Home Assistant automates devices; Jellyfin handles media, secured and isolated via Keycloak and NeuVector.

Key Learnings (and Mistakes)

  • Security ≠ Tools Alone: Automate checks and explain their purpose.

  • Containers ≠ Safe: Rootless isn’t root-proof. Use gVisor and seccomp profiles.

  • Backups Matter: After a blackout wiped storage, I follow 3-2-1:

    • 3 copies (local/cloud/air-gapped)
    • 2 formats (disks and volumes)
    • 1 offline copy updated monthly

  • Document Everything: Now everything lives in Terraform, Ansible, and Obsidian.

What’s Next

  • Dive deeper into eBPF and Hubble.
  • SPIFFE-based Zero Trust for smart home devices.
  • Chaos engineering with Chaos Mesh.

Conclusion: More Than Just Tech

My homelab is less about fancy hardware and more about cultivating a mindset—one that values experimentation, resilience, and security-by-design. Whether you're in tech or not, the core idea resonates: the best way to learn is to build, break, and rebuild. Just like fixing something around the house teaches you more than watching a tutorial, troubleshooting your own systems builds lasting intuition. And sometimes, your best security insights emerge not in a SOC, but by building intuition through doing.

Cybersecurity