Linode Kubernetes Engine - Release Notes

Added

• This release includes CoreDNS autoscaling, based on the cluster-proportional-autoscaler project. The number of CoreDNS pods now scales based on the number of nodes in the LKE cluster.

Changed

• Removed support for Kubernetes v1.27

Changed

• Upgraded clusters using Kubernetes 1.30 to patch version 1.30.2
• Upgraded Block Storage CSI driver to v0.8.0

Added

• Added support for custom labels and taints, which can be applied to node pools through the Linode API. Review the Add Labels and Taints to your LKE Node Pools documentation and the Create a node pool API endpoint documentation for more details.

Added

• Kubernetes 1.29 support (changelog ).

Changed

• Rename ConfigMap kube-system/coredns to kube-system/coredns-base.

Added

• CoreDNS configuration customization capabilities via the kube-system/coredns-custom ConfigMap.

Changed

• Upgraded clusters using Kubernetes:
  • 1.27 to patch version 1.27.11 .
  • 1.28 to patch version 1.28.7 .
• Adjusted terminated-pod-gc-threshold:
  • Details:
    • Change: The --terminated-pod-gc-threshold setting in the kube-controller-manager has been reduced from its default value to 500 pods.
    • Context: Previously, Kubernetes kept a large number of evicted and terminated pods. This could consume unnecessary resources and limit space for new pods.
    • Impact: When the count of evicted and terminated pods exceeds 500, the oldest pods (first by eviction timestamp, then by creation timestamp) are deleted to maintain the threshold. This helps reclaim resources and improve cluster performance.
  • Resources:
    • Kubernetes: Garbage collection of Pods
    • Kubernetes: Command line reference

Changed

• Upgraded clusters using Kubernetes:
  • 1.26 to patch version 1.26.13 .
  • 1.27 to patch version 1.27.10 .
  • 1.28 to patch version 1.28.6 .
• Upgraded CSI driver to v0.6.3 .
• Upgraded LKE kernel version from v5.15 to v6.1 for new LKE nodes.

Fixed

• CVE-2024-21626 has been mitigated for newly created LKE nodes. If you have an existing LKE node, you need to recycle it to apply the mitigation.

Changed

• Upgraded CCM to v0.3.22
• Upgraded CSI driver to v0.6.2
• Upgraded Kubernetes dashboard to v3.0.0-alpha0

Changed

Upgraded clusters using Kubernetes:

• 1.26 to patch version 1.26.12
• 1.27 to patch version 1.27.9
• 1.28 to patch version 1.28.5

Changed

• Upgraded clusters using Kubernetes 1.27 to patch version 1.27.8

Added

• Kubernetes 1.28 is now available on LKE. Review the Kubernetes changelog .
• The node-mask-cidr size changed from /24 to /25. This has no impact on the max pods per node (110).