Building an Observability Stack on My Proxmox Homelab
How I set up Prometheus, Grafana, and node_exporter to monitor a 3-node Proxmox cluster — and the design decisions behind every choice.
Juan Esteban Muñoz Díaz
Application security engineer and bug bounty hunter. I run my own homelab — Proxmox cluster, my own DNS, Prometheus/Grafana observability, NetBox as source of truth — and I contribute capacity to public privacy and measurement infrastructure: a Tor middle relay, a RIPE Atlas probe, and OONI Probe. I write about appsec, bug bounty, networking, homelab, and security.
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The QDevice That Wouldn't Vote
How I built real quorum into a 2-node Proxmox cluster with a Raspberry Pi — and the leftover Tor firewall rule that almost stopped it.