Auto-update blog content from Obsidian: 2025-05-16 13:17:57
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@ -31,9 +31,9 @@ I also wanted to spawn new virtual machines at will, rebuild them from scratch,
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Initially, my goal was to provide high availability for my existing services. One server wasn’t enough. So, I wanted a second node. But in most HA setups, three nodes are the sweet spot. And just like that, I was on my way to building what would become my homelab.
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## Shaping the Lab
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### Blueprint
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First, I needed to define what my homelab was actually supposed to do. I wanted it to host my existing services reliably, but that wasn’t enough, I wanted a true playground, capable of simulating a more complex enterprise environment.
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### Blueprint
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That meant:
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- **High Availability:** Three nodes to ensure that no single point of failure would bring everything down.
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@ -50,6 +50,8 @@ Of course, reality doesn’t always align with ambitions. Here’s what I was up
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- **Budget:** I wasn’t going to drop thousands on enterprise-grade hardware. The balance was finding reliable, second-hand gear that wouldn’t break the bank.
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- Temperature: I’m not gonna lie, I forgot about it.. Mini PCs don’t generate much heat, but network gear? That’s a different story. Lesson learned.
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## Infrastructure Overview
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Let’s break down the components that make up my homelab.
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### Rack
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What is a datacenter without a rack? Honestly, I didn’t think one would fit in my limited space, until I discovered the [DeskPi RackMate T1](https://deskpi.com/products/deskpi-rackmate-t1-2).
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@ -67,7 +69,7 @@ Regarding hardware, my existing server was powered by an AM4 Ryzen 3 2200G with
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The specifications for the two additional nodes were clear: an AM4 socket for consistency, low power consumption, dual NICs with at least one 2.5Gbps, and sufficient storage options, at least one M.2 NVMe slot and a 2.5" drive bay. Since AM4 is somewhat dated, newer models were off the table, a good news for my budget, as I was able to buy second-hand mini PCs.
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Here is the breakdown of my nodes:
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Here is the layout of my nodes:
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| **Node** | **Vertex** | **Apex** | **Zenith** |
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| --------- | ----------------------- | ----------------------- | ------------------------ |
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@ -80,7 +82,15 @@ Here is the breakdown of my nodes:
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| **2,5"** | 2 | 2 | 1 |
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### Network
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For the network, I wanted to play around with VLANs to segregate my network and a better control over my firewall. I also needed wanted a couple of Power over Ethernet ports and
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For the network, I wanted to play around with VLANs to segregate my network and a better control over my firewall. I needed some 2.5Gbps ports to make use of those of my nodes, and I also wanted a couple of Power over Ethernet ports.
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I've heard of Microtik hardware and I really wanted it, but the layout of their switches wouldn't fit with the target. On the other hand, Ubiquiti was proposing a very good range of equipments with UniFi, with a sleek UI and actually beautiful hardware.
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For the router I really wanted a custom one, I didn't want the UniFi gateway, I wanted my hands a bit dirtier than that. I was hesitating between pfSense and OPNsense and I finally choose the latter because I heard it was maybe more newbie friendly, I don't regret for now.
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My network setup is finally as follow:
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- OPNsense router installed a on Topton box, powered by a N100, 16GB of RAM and 4x 2.5Gbps ports
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-
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### Cooling
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### Photos
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@ -119,41 +129,6 @@ For the network, I wanted to play around with VLANs to segregate my network and
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Welcome to my homelab — a space where I explore new technologies, break things on purpose, and learn by doing. What started as a few old machines has grown into a modest but powerful setup that I use for self-hosting, automation, testing infrastructure tools, and running personal projects.
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## 1. Hardware
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I currently run a 3-node cluster built with energy-efficient mini PCs and repurposed desktops. Here's a breakdown:
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- **Node 1**: AMD Ryzen 4C/4T, 16GB RAM
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- **Node 2**: AMD Ryzen 6C/6T, 16GB RAM
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- **Node 3**: AMD Ryzen 8C/16T, 64GB RAM
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- **Storage**: Ceph-based distributed storage across all nodes
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- **Network**: 1Gbps LAN with 2.5Gbps NICs for Ceph replication traffic
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- **Rack**: Compact 10" rack with managed switch and PDU
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## 2. Software
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- **Proxmox VE**: Used for virtualization and clustering
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- **Ceph**: Distributed storage for VM disks
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- **Kubernetes (K3s)**: For orchestrating containerized apps
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- **Gitea**: Self-hosted Git with CI/CD via Gitea Actions
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- **OPNsense**: Firewall, VLANs, and DNS (with AdGuard + Unbound)
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- **Monitoring**: Grafana, Prometheus, Node Exporter
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## 3. Projects
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Some of the ongoing and past projects I've worked on:
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- CI/CD automation using Gitea Actions
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- GitOps pipeline for Kubernetes using ArgoCD
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- Hugo-based personal blog hosted with Docker
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- Home automation with Zigbee2MQTT and Home Assistant
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- VPN and remote access via WireGuard
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- Infrastructure as Code with Terraform and Ansible
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---
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If you're curious about any part of the stack or want to know how I built something specific, feel free to check the related blog posts!
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