Announcing Flatcar Container Linux Stable release 2905.2.5, Beta release 2983.1.1, and Alpha release 3005.0.1

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Flatcar Container Linux User

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Sep 30, 2021, 6:45:23 PM9/30/21

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Hello,

We are pleased to announce a Flatcar Container Linux maintenance release for our Stable, Beta and Alpha channel.

Update to CGroupsV2

As of Alpha version 2969.0.0, Flatcar Container Linux migrates to the unified cgroup hierarchy (aka CGroupsV2)! 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/

New Alpha release 3005.0.1

Changes since Alpha 3005.0.0

Security fixes

Linux (CVE-2021-41073, CVE-2020-16119)

Bug fixes

The Mellanox NIC Linux driver issue introduced in the previous release was fixed (Flatcar#520)

Updates

Linux (5.10.69)

Note: Please note that ARM images remain experimental for now.

New Beta release 2983.1.1

Changes since Beta 2983.1.0

Security fixes

Linux (CVE-2021-41073, CVE-2020-16119)

Updates

Linux (5.10.69)

New Stable release 2905.2.5

Changes since Stable 2905.2.4

Security fixes

Linux (CVE-2021-41073, CVE-2020-16119)

Bug fixes

The Mellanox NIC Linux driver issue introduced in the previous release was fixed (Flatcar#520)

Updates

Linux (5.10.69)

Best,

The Flatcar Container Linux maintainers

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