london-a

Dedicated monitoring server. Runs Prometheus and Grafana, nothing else.

Overview


Location	London (NW9)
OS	FreeBSD 14.3
Tailscale IP	100.122.219.41
Role	Monitoring (Prometheus + Grafana)

Hardware

Component	Spec
CPU	Intel i7-4790K (8 threads)
Memory	32 GB
Boot disk	1 TB

Old gaming PC, now perfectly happy as a monitoring host. Very lightly loaded — disk at ~6%.

Services

Service	Port	URL
Prometheus	9090	prometheus.pez.sh
Grafana	3000	grafana.pez.sh

Both are behind Authelia (auth handled by Caddy on helsinki-a).

Why FreeBSD

This one runs FreeBSD instead of Ubuntu. For a single-purpose monitoring host it works well. No particular reason to change it — it's stable and does its job.

Networking

Connected via Cat 5 to the Ubiquiti switch alongside london-b.

Notes

Prometheus scrapes all hosts over Tailscale. See monitoring.md for scrape targets and dashboard details.

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