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Flatcar

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https://github.com/flatcar/flatcar - Linux for containers. Meetings every second and fourth Wednesday of the month at 2:30pm UTC. Agendas here: https://github.com/flatcar/Flatcar/discussions?discussions_q=is%3Aopen+category%3A%22Flatcar+Office+Hours%22+category%3A%22Flatcar+Developer+Sync%2211 Servers

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17 Apr 2024
@apricote:matrix.orgJulian Tölle Thanks for the guidance throughout the whole process tormath1! I will check out the nightly images tomorrow too and see if I can successfully use them in my cluster :) 13:59:25
@tormath1:matrix.orgtormath1Now I'm wondering what we could do for the documentation: we should somehow link your Packer setup. 14:15:33
@apricote:matrix.orgJulian Tölle Sounds good to me. I will update it after the nightly image is released, but would wait with the official docs until its available in alpha at least (to simplify the packer config) 14:17:02
@tormath1:matrix.orgtormath1It gives us some times to shape the "official" documentation, as at the moment I don't see other content except: follow the README from https://github.com/apricote/flatcar-packer-hcloud14:20:01
@apricote:matrix.orgJulian Tölle

Happy to just copy everything over, similar to how the terraform scripts from flatcar/flatcar-terraform are embedded in the docs right now.

Once its available in alpha I can get the packer config down to 75-80 lines.

14:24:53
@tormath1:matrix.orgtormath1 Hello Adrian Vladu do you think we can close this one: https://github.com/flatcar/Flatcar/issues/1009 ? 14:25:44
@ader1990:matrix.orgAdrian Vladu
In reply to @tormath1:matrix.org
Hello Adrian Vladu do you think we can close this one: https://github.com/flatcar/Flatcar/issues/1009 ?
Hello, I still need to take a look at the live migration part. Maybe add support for the host-guest services (kvp/vss), see https://wiki.gentoo.org/wiki/Hyper-V.
14:28:59
@ader1990:matrix.orgAdrian VladuIt's on my to do list to get Flatcar on a Hyper-V cluster up and running on this month's cycle.14:30:06
@tormath1:matrix.orgtormath1Yes, I think that's a good start. 👌14:30:31
@ader1990:matrix.orgAdrian VladuMaybe it's better to close this issue thread and create one just for the live migration verification?14:30:37
@ader1990:matrix.orgAdrian Vladu As all the Jeremi to do's have been addressed https://github.com/flatcar/Flatcar/issues/1009#issuecomment-2014717805 14:31:20
@tormath1:matrix.orgtormath1It's up to you, no rush on this but as the initial issue was mentioning the live migration I think it's better to keep it open until it's done? 14:32:41
@apricote:matrix.orgJulian Tölle

I took another look at the missing integrations:

  • hc-utils Units for configuring networks: This seems to work out-of-the-box on flatcar

  • hc-utils Units for volume automounts: This is basically just a udev rules file, should be easy to get in the oem sysext. One issue I encountered was, that the hc-utils file modified /etc/fstab which is not an option on Flatcar. Not sure how to dynamically generate and persist systemd .mount files here

  • Initial Root Password: On Hetzner Cloud its possible to start a server without SSH Key. We generate a root password and show it to the user once. This is then configured on the server through cloud-init chpasswd for the root user

  • Root Password Reset: Its possible to reset the root password through the API. This is being handled by qemu-guest-agent. I found that qemu-ga was only installed on the amd64 board, not on arm64. Another issue is, that the message received is for the root user. Not sure if we can just intercept this and always modify the core user instead, or if we want to accept that this does not work.

All of these feature are very much oriented at the beginner users, who are probably not running Flatcar. I do not think we require them, and adding a note about this in the docs should be fine.

14:33:07
@ader1990:matrix.orgAdrian Vladu
In reply to @tormath1:matrix.org
It's up to you, no rush on this but as the initial issue was mentioning the live migration I think it's better to keep it open until it's done?
Let's keep it open until I get a Hyper-V cluster up and running to check if it works ;)
14:34:43
@ader1990:matrix.orgAdrian Vladu
In reply to @tormath1:matrix.org
It's up to you, no rush on this but as the initial issue was mentioning the live migration I think it's better to keep it open until it's done?
* Let's keep it open until I get a Hyper-V cluster up and running to validate the scenario
14:34:52
@apricote:matrix.orgJulian Tölle(Duplicated the previous message to the GitHub issue for visibility)15:05:10
@srust:matrix.orgsrust Yeah thanks tormath1 , was mostly curious around how different cloud providers work, if the cloud provider marketplace is the common path for folks to use flatcar, or if cloud providers support it natively in their catalog of official images. It is of course provider specific, was wondering if there was a trend or if both methods were sort of split across the providers 17:31:48
@srust:matrix.orgsrustlinode doesn't have a marketplace yet but is certainly interested in going that route - trying to see if we would be better suited to wait for a marketplace, or if we should try to go towards the native catalog support17:32:26
18 Apr 2024
@tormath1:matrix.orgtormath1

As usual with this kind of question: it depends ™️.
As mentioned in this Brightbox blogpost: https://www.brightbox.com/blog/2024/04/11/flatcar-images/

[...] I’m pleased to announce that we’re now automatically importing the latest Stable, LTS and Beta releases

A trade-off would be to

07:52:02
@tormath1:matrix.orgtormath1 *

As usual with this kind of question: it depends ™️.
As mentioned in this Brightbox blogpost: https://www.brightbox.com/blog/2024/04/11/flatcar-images/

[...] I’m pleased to announce that we’re now automatically importing the latest Stable, LTS and Beta releases

07:52:08
@tormath1:matrix.orgtormath1 *

As usual with this kind of question: it depends ™️.
As mentioned in this Brightbox blogpost: https://www.brightbox.com/blog/2024/04/11/flatcar-images/

[...] I’m pleased to announce that we’re now automatically importing the latest Stable, LTS and Beta releases

This is one way, marketplace is another... As long as it's documented and properly integrated with the APIs (Terraform, SDK, etc.) it's ok.

07:53:15
@tormath1:matrix.orgtormath1 *

As usual with this kind of question: it depends ™️.
As mentioned in this Brightbox blogpost: https://www.brightbox.com/blog/2024/04/11/flatcar-images/

[...] I’m pleased to announce that we’re now automatically importing the latest Stable, LTS and Beta releases

This is one way of doing things, marketplace is another... As long as it's documented and properly integrated with the APIs (Terraform, SDK, etc.) I would say it's ok.

07:53:48
@tormath1:matrix.orgtormath1 *

As usual with this kind of question: it depends ™️.
As mentioned in this Brightbox blogpost: https://www.brightbox.com/blog/2024/04/11/flatcar-images/

[...] I’m pleased to announce that we’re now automatically importing the latest Stable, LTS and Beta releases

This is one way of doing things, marketplace is another... As long as it's documented and properly integrated with the APIs (Terraform, SDK, etc.) I would say it's ok.

Another question would be: what do I want to propose in my native catalog? Most of the time catalogs are made of general purpose OS (Debian, Ubuntu, Fedora, etc.) I think that would make sense to propose a Container OS in the native catalog.

08:00:41
@tormath1:matrix.orgtormath1 main nightly (built from the main branch): http://bincache.flatcar-linux.net/images/amd64/3943.0.0+nightly-20240417-2100/
alpha nightly (built from the current Alpha branch): http://bincache.flatcar-linux.net/images/amd64/3941.0.0+nightly-20240417-2100/
08:16:58
@dongsupark:matrix.orgdongsupark kailueke: Let me first merge https://github.com/flatcar/scripts/pull/1916, and rebase https://github.com/flatcar/scripts/pull/1907 on top of main to rerun SDK CI. Your PR anyway passed SDK & packages, only failed at vm due to hetzner. Does not worth rerunning CI twice for Rust. Ok? 08:43:28
@srust:matrix.orgsrust agreed. appreciate that tormath1 13:57:31
@srust:matrix.orgsrust * agreed. appreciate that tormath1 thank you. 13:57:36
@tormath1:matrix.orgtormath1 nsaika: Hello there, what do you think about documenting your process to import Flatcar images on Linode and run instances? I think it can serve as a good foundation for Akamai/Linode user documentation - while it's still fresh in your mind :)
There is no rush as we still need to wait for CoreOS folks to merge / release Afterburn and Ignition
14:10:41
19 Apr 2024
@ader1990:matrix.orgAdrian VladuGentoo Council voted and passed a motion related to AI code05:36:31
@ader1990:matrix.orgAdrian Vladu It is expressly forbidden to contribute to Gentoo any content that has
been created with the assistance of Natural Language Processing
artificial intelligence tools. This motion can be revisited, should
a case been made over such a tool that does not pose copyright, ethical
and quality concerns.
05:36:34

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