Building My Homelab - Virtualization with Proxmox
How I built a production-grade virtualization platform using Proxmox VE to run multiple isolated services with VM lifecycle management and operational best practices.
When I decided to get serious about self-hosting, I knew I needed a reliable foundation. Running services directly on bare metal felt limiting: I wanted isolation, snapshots, and the ability to experiment without risking my production workloads. That's when I discovered Proxmox VE.
Why virtualization matters
Before Proxmox, I was running services in a more ad-hoc fashion: a web server here, a database there, all sharing the same OS and competing for resources. The problems were predictable:
- One misconfigured service could affect everything else
- Updates were risky: breaking one thing meant breaking everything
- No clean way to test changes before deploying them
- Backup and recovery was a nightmare
Virtualization solved all of this. Every workload got its own operating system, its own slice of resources, and its own failure domain.
The Proxmox setup
Proxmox VE runs on dedicated hardware in my homelab. The setup prioritizes three things.
Resource isolation
Each service runs in its own VM or container with dedicated CPU, memory, and storage allocations, so a misbehaving Minecraft server can't starve my monitoring stack.
Snapshot discipline
I snapshot before anything risky. OS upgrades, configuration changes, installing software I haven't run before. If something breaks, I can roll back in seconds instead of spending hours debugging.
Network segmentation
VMs are bridged to my LAN through Proxmox's networking layer, and I control which networks each VM can reach from there. Management interfaces stay on trusted networks. Public-facing services get their own segment.
Operational practices
Running a homelab the way I'd run a production environment is mostly a set of habits.
VM lifecycle management
I treat VMs as cattle, not pets. Each one has a clear purpose and a documented configuration, and any of them can be rebuilt from scratch if it comes to that. The rule is what forces the documentation to exist, and it's what keeps snowflake configurations from accumulating.
Monitoring integration
Every VM runs a Prometheus node exporter feeding into my central monitoring stack, so CPU, memory, disk, and network utilization across the whole environment show up on one dashboard.
Backup strategy
Proxmox's built-in backup tools make it easy to schedule regular backups of the VMs I'd hate to lose, and combined with my NAS storage, that gives me more than one layer to recover from.
What I run
The platform currently hosts service VMs for web applications, databases, and APIs, plus infrastructure VMs running DNS, the reverse proxy, and monitoring. Development VMs give me isolated environments for testing new tools. Anything that needs to persist lives on TrueNAS, which the platform is connected to.
Lessons learned
Building this platform taught me four things. Isolation reduces blast radius. When something breaks, it breaks in its own sandbox. Snapshots are a superpower, and the confidence to experiment comes from knowing you can undo mistakes. Documentation is essential, because future me needs to understand what past me was thinking. A stable base layer makes everything above it easier, which is what investing in solid infrastructure buys you.
What's next
The homelab is an ongoing project. Currently in progress:
- Improving my backup destinations and retention policies
- Better inventory documentation with a network map
- Exploring container orchestration for stateless workloads
If you're thinking about building one, start with virtualization. The skills you pick up (resource management, networking, backup strategies, operational thinking) transfer directly to professional infrastructure work.