#fedora-coreos on 2022-11-22 — irc logs at libera.irclog.whitequark.org

2022-05-11 12:42 dustymabe changed the topic of #fedora-coreos to: Fedora CoreOS :: Find out more at https://getfedora.org/coreos/ :: Logs at https://libera.irclog.whitequark.org/fedora-coreos

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06:33 <OnuralpSezerhehi> Hello, in ignite file how can I combine 2 disks and use as one (I want merge sda and sdc)

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08:07 <travier[m]> Onuralp Sezer (he/him): You can use RAID for that. We don't support LVM

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08:19 <OnuralpSezerhehi> <travier[m]> "Onuralp Sezer (he/him): You..." <- What if I go btrfs route ?

08:51 <travier[m]> Onuralp Sezer (he/him): I'm afraid the btrfs support in Ignition is not complete in that it does not support advanced btrfs features

08:51 <travier[m]> https://github.com/coreos/ignition/issues/815

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09:03 <jorti[m]> Hi all, I'm testing the PXE install on a bare metal machine that only has console on the 2nd serial port (ttyS1). I'm trying to customize the initramfs so that grub is configured with that serial port, however it's not working as expected.... (full message at <https://libera.ems.host/_matrix/media/v3/download/libera.chat/74375fbbc35149d0d3571a82a938f17ac0c42ebe>)

09:04 <jorti[m]> however grub.cfg is not configured for the second serial port

09:04 <jorti[m]> Am I doing something wrong? or is it a bug?

09:08 <travier[m]> jorti: Can you file an issue in the tracker with all the details?

09:08 <jorti[m]> sure, will do

09:35 <travier[m]> New ostree specific page in the release notes: https://docs.fedoraproject.org/en-US/fedora/latest/release-notes/sysadmin/Ostree/

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10:44 <OnuralpSezerhehi> <travier[m]> "https://github.com/coreos/..."; <- okay I will follow there and I fixed my issue by growing the main disk a bit and I followed here https://github.com/coreos/fedora-coreos-tracker/issues/568 It works fine

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11:05 <OnuralpSezerhehi> > <@siosm:matrix.org> https://github.com/coreos/ignition/issues/815

11:05 <OnuralpSezerhehi> * okay I will follow there and I fixed my issue by growing the main disk a bit and I followed here https://discussion.fedoraproject.org/t/how-to-trigger-expand-on-root-partition/17870/8 It works fine

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12:40 <b100s> hi2all; I don't remember if I asked this question already. FCOS by default is using cgroups v2. At the same time we know that one of it's main target is to be OS for k8s cluster. However k8s doesn't support cgroups v2 until 1.25, which is latest as of now. Why FCOS has cgroup v2 as default?

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13:00 <lucab> b100s: it is marked as GA only now in 1.25, but most of the logic was already done in 1.22. All the low-level components were ready for v2 last year, and Fedora itself switched to it even before. v1 just has too many small messy bits that we are happy to leave behind us :)

13:02 <lucab> b100s: if you are looking for specific v2 items to be excited about, I'm personally happy with proper nesting/delegation and the PSI metrics

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13:05 <b100s> Got it. Just wonder because we do migrate to FCOS from Core OS and our k8s is not 1.25 yet. So we have to use cgroup v1 and were surprised a bit that FCOS already on cgroup v2 by default.

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13:08 <b100s> Btw if we do switch to cgroup v1 there is still cgroup v2 mount to /sys/fs/cgroups/unified . Why this mount is needed?

13:10 <lucab> I assume you are following https://docs.fedoraproject.org/en-US/fedora-coreos/kernel-args/#_example_staying_on_cgroups_v1

13:11 <lucab> if so, check the docs for the "Hybrid" mode in https://github.com/systemd/systemd/blob/main/docs/CGROUP_DELEGATION.md#three-different-tree-setups-

13:14 <b100s> Yes, we do follow the doc. Let me check the Hybrid mode, never heard about it.

13:16 <b100s> Got it. Why Hybrid mode was chosen? Any specific part of FCOS needs cgroup v2 ?

13:56 <lucab> b100s: it's the default that systemd (and thus FCOS) was using before fully switching to unified / v2

14:05 <b100s> Got it. Thank you.

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14:43 <jmarrero> dustymabe: GM, Sorry was out yesterday and Friday. Let me know if there is anything I can help with today.

14:44 <dustymabe> jmarrero: will do!

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17:15 <kdkmm> Home experimenter / non-production -> I want to set up a server with as-close-to-FDE-as-I-can-get without Tang and where the chosen threat model is physical theft. TPM2 is not helpful for this, so I went with encrypting /var and using keyfile->inline and the filesystem configured with with_mount_unit. I was surprised that on boot, no decryption key

17:15 <kdkmm> was requested, and on login, /var was accessible. Is there a way to force FCOS to request a manually entered decryption key rather than storing it?

17:16 <kdkmm> I am aware that this would breaks automatic reboots, so I can understand if non-automated decryption is unsupported.

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18:02 <travier[m]> https://uapi-group.org/docs/conferences/2023-02-04__fosdem-devroom/ > CfP for a FOSDEM dev room about image based linux and related topics. If you're looking at attending FOSDEM, giving a talk about FCOS there is a good opportunity.

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18:27 <kdkmm> For my above question, I found that the key material is stored in /etc/luks/<name> , and removing that file is sufficient to prompt for the key on boot.

18:34 <dustymabe> kdkmm: posting this question and the answer on the discussion forum might be helpful for others

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