Announcing Flatcar Container Linux Alpha release 3046.0.0, Beta release 3033.1.0, Stable release 2983.2.0, and LTS-2021 release 2605.23.1

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Flatcar Container Linux User

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Nov 9, 2021, 8:15:07 AM11/9/21
to Flatcar Container Linux User

Hello,

We are pleased to announce a Flatcar Container Linux maintenance release for our LTS-2021 channel, as well as new major releases for our Alpha, Beta and Stable channel.

All releases include an update which changes the URL of our binary package server to https://mirror.release.flatcar-linux.net/ . This change applies to the SDK and to the development container and is required to reflect changes in our build infrastructure. There’s a tracking issue for that change here.


Update to CGroupsV2

CGroups V2 is coming to Stable! Introduced in Alpha 2969.0.0, the feature has been stabilising for almost three months now and will be included in Stable 2983.2.0.
NOTE that only new nodes will utilize CGroupsV2 by default. Existing nodes remain on CGroupsV1 and need to be manually migrated to CGroupsV2.
If you run into any issues please file an issue at https://github.com/flatcar-linux/Flatcar/issues .
To learn more about CGroupsV2 on Flatcar Container Linux and the migration guide, please refer to https://kinvolk.io/docs/flatcar-container-linux/latest/container-runtimes/switching-to-unified-cgroups/


New Alpha release 3046.0.0

Changes since Alpha 3033.0.0

Security fixes

Bug fixes

Changes

Updates


New Beta release 3033.1.0

Changes since Alpha 3033.0.0

Security fixes

Changes

Updates


Changes since Beta 2983.1.2

Security fixes

Bug fixes

  • The tcsd service for TPM 1 is not started on machines with TPM 2 anymore where it fails and isn’t necessary. (flatcar-linux/coreos-overlay#1365)

  • Skip tcsd.service for TPM2 devices to fix failures on c3.small.x86 instances of Equinix Metal (Flatcar#208)

  • Fixed locksmith adhering to reboot window when getting the etcd lock (flatcar-linux/locksmith#10)

  • Run emergency.target on `ignition/torcx` service unit failure in dracut (bootengine#28)

Changes

Updates


New Stable release 2983.2.0

Update to CGroupsV2

CGroups V2 is coming to Stable! Introduced in Alpha 2969.0.0, the feature has been stabilising for almost three months now and will be included in Stable 2983.2.0.
NOTE that only new nodes will utilize CGroupsV2 by default. Existing nodes remain on CGroupsV1 and need to be manually migrated to CGroupsV2. To learn more about CGroupsV2 on Flatcar Container Linux and the migration guide, please refer to https://kinvolk.io/docs/flatcar-container-linux/latest/container-runtimes/switching-to-unified-cgroups/

Changes since Beta 2983.1.2

Security fixes

Bug fixes

Updates


Changes since Stable 2905.2.6

Security fixes

Bug fixes

  • Use https protocol instead of git for Github URLs (flatcar-linux/coreos-overlay#1394)

  • Skip tcsd.service for TPM2 devices to fix failures on c3.small.x86 instances of Equinix Metal (Flatcar#208)

  • Fixed containerd config after introduction of CGroupsV2 (coreos-overlay#1214)

  • Fixed path for amazon-ssm-agent in base-ec2.ign (coreos-overlay#1228)

  • Fixed locksmith adhering to reboot window when getting the etcd lock (locksmith#10)

  • Add the systemd tag in udev for Azure storage devices, to fix /boot automount (init#41)

Changes

Updates


New LTS release 2605.23.1

Changes since LTS 2605.22.1

Security fixes

Bug fixes

Updates


Best,

The Flatcar Container Linux maintainers

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