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DocumentationTencent Kubernetes EngineRelease Notes and AnnouncementsAnnouncementsHost Operation System Release for Super Node Pods (Mitigated NodeLost Issue)
Host Operation System Release for Super Node Pods (Mitigated NodeLost Issue)
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Last updated: 2025-02-11 15:42:18
Host Operation System Release for Super Node Pods (Mitigated NodeLost Issue)
Last updated: 2025-02-11 15:42:18
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To enrich the features, Tencent Kubernetes Engine (TKE) plans to release a new host OS version for super nodes on March 10, 2025 (UTC+8). The incremental pods on super nodes will gradually use the new OS version.

Time

The operating system will gradually apply to the incremental pods starting from March 10, 2025 (UTC+8).

Impact Scope

This change will apply to the pods that are rebuilt or newly added on super nodes in TKE Standard Cluster and TKE Serverless Cluster. The pods currently running on super nodes will not be affected.

About the New Version of Host OS

The new version of the host OS is based on Tencent's commercial TencentOS distribution, with an upgraded kernel on the original OS, supporting a wider range of storage types. It greatly optimizes memory usage of system components, reducing their memory occupation.

Version Check Methods

After logging into the pod, execute the following command to view the host OS kernel version(5.4.241-1.0017):
# uname -a
Linux <pod-name> 5.4.241-1.0017.10.eks.8.tl4

New Features

Mitigated unresponsiveness of the machine that is caused by memory inadequacy. It will trigger cgroup OOM kill timely to prevent the machine from entering the unresponsive state (nodelost state) when the memory in the pod is nearly reached.
Added the support for Cloud Object Storage (COS). For the operation guide, see Using COS.
Added the support for Ceph File System (CephFS).

Optimized Features

The kernel version was upgraded from 5.4.119-1.0009 to 5.4.241-1.0017.
containerd was upgraded from v1.4.3 to v1.6.9.
The GPU driver was upgraded from 470 to 535, supporting CUDA version upgrade from up to 11.4 to 12.2.
The systemd software package version was updated from 239 to 255.
The dbus software package version was updated from 1.12.8 to 1.14.8.

Other Notes

To try the operating system in advance, you can submit a ticket for application.
To upgrade a running pod to the new OS version, you need to rebuild the pod first.
If you have specified a specific OS version through the annotation (eks.tke.cloud.tencent.com/eklet-version), you need to remove that annotation to make the new OS version take effect.

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