~/talk

One Config to Rule Them All: From systemd to Reliable Embedded Upgrades

on YouTube 29m
Talkat Linux Plumbers Conference 2025 · 2025-12-11..12-13· [embedded-and-hardware]

speaker

name:Behan Webster
bluesky:behanw.bsky.social

resources

video:https://youtu.be/owdsnPb_WQ0
slides:none on file

summary

Argues for a concrete, versioned layering: /usr defaults (vendor-provided), /etc overrides (fragments/conf.d) and /run ephemeral, using tools like systemd, systemd-confext, conf.d patterns, overlayfs and AB-style partitions to enable validation, measurements and rollback for fleet upgrades. Describes Viata-style single-file config that generates /etc at boot (Perl implementation), supports schema validation and rollbacks, and shows this model can enable read-only rootfs deployments, factory reset, partial adoption and compliance with rules like the EU CRA.

AI-written summary · about

chapters (6)

  1. 0:00Introduction and motivation
  2. 3:54Current configuration problems
  3. 11:22Prior art and limitations
  4. 16:03Vyatta-style configuration approach
  5. 21:43System-wide requirements for upgrades
  6. 26:13Call to action and future vision

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