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UID:pretalx-all-systems-go-2024-HJLF3C@cfp.all-systems-go.io
DTSTART;TZID=CET:20240925T170000
DTEND;TZID=CET:20240925T172500
DESCRIPTION:On general purpose image based systems such as Flatcar and Fedo
 ra CoreOS\, users are encouraged to run all their applications using conta
 iners. To make updates safe and predictable\, the system is mounted as rea
 d only and local modifications are discouraged.\n\nWhile containers offer 
 a lot of flexibility on Linux\, there are still cases where installing bin
 aries or running applications directly on the host operating system is pre
 ferred. For example to add kernel modules\, use an alternative container r
 untime version\, add more udev rules\, etc.\n\nSome of those use cases cou
 ld be addressed with statically linked binaries\, but their management is 
 manual and their usage creates new issues around updates\, versionning\, m
 emory footprint and not everything can be statically compiled. Alternative
 ly\, one can build its own image but at non-negligeable maintenance costs.
 \n\nSystemd's system extensions (sys-ext) provide a mechanism to extend th
 e content of the host while preserving the safety guarentees around update
 s. We will demonstrate how Flatcar\, Fedora CoreOS and Atomic Desktops are
  leveraging sysext images to securely extend the OS. With practical exampl
 es and usecases (e.g Cluster API) learn how to install Python\, Podman\, K
 ubernetes\, ZFS\, everything at the same time\, by composing your very own
  image with systemd-sysext.
DTSTAMP:20260315T023557Z
LOCATION:Main Hall
SUMMARY:Waiter\, an OS please\, with some sysext sprinkled on top - Mathieu
  Tortuyaux\, Timothée Ravier
URL:https://cfp.all-systems-go.io/all-systems-go-2024/talk/HJLF3C/
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