Kubernetes

This release upgrades the Kubernetes control plane and node components to version 1.37, including updated networking, storage, and observability components.

Control plane & add-ons

• Calico: v3.32.1
• Cilium: v1.20.1
• Kilo: 0.7.0
• Metrics Server: v0.9.0
• CoreDNS: v1.14.7
• Scaleway Block Storage CSI driver: v0.3.6
• Scaleway File Storage CSI driver: v0.0.3
• Cloud Controller Manager (CCM): v0.36.2

Node changelog components

• Linux kernel: 6.8.0-136-generic
• containerd: 2.3.4
• CNI plugins: 1.9.1
• runc: 1.5.1

Feature gates available in 1.37

The following feature gates are available and can be enabled as needed:

• HPAScaleToZero
• CPUManagerPolicyAlphaOptions
• MutatingAdmissionPolicy
• ImageVolume

For more information, refer to Scaleway's Kubernetes version support policy.

You can now define custom user-data dedicated to a pool. This enables you to specify cloud-init configuration relying on custom user-data, which your node can then read at boot time. For more details, see the cloud-config examples in the cloud-init documentation.

Key interactions with user-data:

• Define user‑data when you create a cluster or a dedicated pool (details)
• List all user-data for a given pool id (details)
• Retrieve the content of a particular user-data entry (details)

Use user-data named "cloud-init" with caution, overriding some configurations can break nodes. Scaleway does not offer support for troubleshooting your cloud-init specific script.

Breaking

• Removed parameter replace on DeleteNode route, the route ReplaceNode should be used instead.

Features

• ReplaceNode route is not deprecated anymore.
• Cloud-controller manager version is bumped to 0.36.2.

Fixes

• The values of the min_size and max_size fields are now pinned to target_size in the case of pools without autoscaling.
• target_size will always be within min_size - max_size range in the case of pools with autoscaling.