Build log

Obsidian Sync Without the Cloud

A sync server written for Cloudflare, running on my own disks, with a 200-line stand-in for R2.

By Brian Mars · Nov 4, 2026 · 13 min

The Log

Recent, briefly

NOV 01Resurrection Sunday 2026.11.01.
OCT 25Resurrection Sunday 2026.10.25.
OCT 22The Devbox Build, Part 5: Watching It and Keeping It. Four dashboards, two backup targets, one mail relay, and the reboot test that catches what the rest missed.¹
OCT 21The Devbox Build, Part 4: Source Control and CI. Forgejo goes in easily. The runner is where every network decision from parts 2 and 3 gets tested at once.²
OCT 20The Devbox Build, Part 3: Containers and a Front Door. Docker goes on, then Caddy goes in front of it, and the tailnet starts to push back.
OCT 19The Devbox Build, Part 2: Reachable From Anywhere, Visible to No One. Tailscale finds the box, mosh keeps the connection, tmux keeps the session, and the firewall only answers on the tailnet.³
OCT 18The Devbox Build, Part 1: Metal and OS. Two drives, one of them in the wrong slot, and a Debian install that only touches one disk.⁴
OCT 18Resurrection Sunday 2026.10.18.

Music

Nov 1, 20261 min

Music

Oct 25, 20261 min

Build log

Four dashboards, two backup targets, one mail relay, and the reboot test that catches what the rest missed.

Oct 22, 20263 min

Paid for by the day job, more or less.

Fine print

1Mounting the Docker socket into Dockge, Beszel and Homepage gives them control of the host, even read-only. That's normal for a box with one admin. A socket proxy in front of the read-only ones is the way to tighten it later.
2Forgejo's first-run screen is reachable before Caddy is set up, through an SSH tunnel to port 3000.
3If a network blocks UDP, mosh can't connect at all. Plain ssh with tmux still works, and Eternal Terminal gives a TCP connection that survives a network change.
4Values in the commands are placeholders. The list is at /reference.