Does Flatcar support LXC ?

[mikucat0309]

In storage site, there is a file named flatcar-container.tar.gz
I use that file to create a LXC instance in my Proxmox VE and it boot sucessfully
it seems a LXC template, but no docs talk about LXC, interop-matrix neither
So what is that file's purpose ? Any instrcution or source about it ?

[pothos]

It's generated and can be a base for a container as with LXC but it has no designated use case it is tailored for and isn't tested. If you have a nice setup to share, how about adding it to the docs?
We have a section for things that don't go through our automated release validation: https://www.flatcar.org/docs/latest/installing/community-platforms/

[daper]

Hi @mikucat0309 could you share a bit more info on how did you managed to make it run?

[AnderssonPeter]

I'm also interested in how you managed to get it running!

[till]

You can use the container tarball as a rootfs with lxc-create with something like:

lxc-create -t local -n flatcar -- --fstree flatcar-container.tar.gz --metadata meta.tar.gz

The meta tarball needs a file config in it. Can be empty. So give that a try.

I don't currently have an lxc host, so the above is copied from my notes from a while ago.

[tormath1]

FWIW a Flatcar user shared this recently in the Matrix channel: https://gist.github.com/joshenders/1f67ceacaadc066e43e2312119e03533