Fedora Linux 39 Beta was released today [1]. Our Fedora CoreOS `next` stream
has been migrated to Fedora Linux 39 content. Existing nodes on the `next`
stream will update as normal over the following days.
The Fedora Project accepted changes for Fedora 39 are at [2] and the Fedora
CoreOS analysis of each change is documented in the tracker issue
ticket #1491 [3].
The following changes require special attention:
- The modularity effort in Fedora has been retired. As such, there are
no more modular repos available. If you are currently using modules
(e.g. `cri-o`), manual steps are required in order to avoid rebasing
issues. See [4] for details.
- To enhance security, the AWS AMI now has IMDSv1 disabled by default
in favour of IMDSv2. If you have applications which still require
access via IMDSv1, you may turn it back on when launching new
instances. No change should occur to upgrading systems. For more
information, see [5].
- The AWS AMI now uses the `gp3` volume type by default rather than
`gp2` which provide more flexibility. Note that the minimum IOPS may
be lower than `gp2` for smaller disk sizes. See [6] for a full
comparison.
- The AWS AMI now uses UEFI by default on x86_64 instance types that
support it. This shouldn't have any noticeable effect on the host.
- The `moby-engine` package has been updated from v20.10 to v24.0.
This is an update that skips several major versions. Please test and
report regressions in the Fedora bug tracker [7] and if possible link
back to the Fedora CoreOS tracker issue [8].
Please test out the `next` stream over the coming month and report any issues
in our issue tracker [9].
Thank you to everyone helping find issues by running the `next` stream!
The Fedora CoreOS Team
[1] https://fedoramagazine.org/announcing-fedora-39-beta/
[2] https://fedoraproject.org/wiki/Releases/39/ChangeSet
[3] https://github.com/coreos/fedora-coreos-tracker/issues/1491
[4] https://github.com/coreos/fedora-coreos-tracker/issues/1513#issuecomment-17…
[5] https://github.com/coreos/fedora-coreos-tracker/issues/1502#issuecomment-17…
[6] https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/general-purpose.html
[7] https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora&component=moby-eng…
[8] https://github.com/coreos/fedora-coreos-tracker/issues/1476
[9] https://github.com/coreos/fedora-coreos-tracker/issues