A notebook of small tools

Short write-ups about self-hosting, backups and keeping a handful of personal servers boring. No tracking, no comments, no newsletter.

Recent notes

• 2026-09 Keeping a warm standby honest: why the copy must be restored, not just taken.
• 2026-08 One reverse proxy, several tenants, and the certificate that nobody renews.
• 2026-06 A cron file with a dot in its name runs never, and says nothing.

Notes are published irregularly, whenever something breaks in an interesting way.