We are rolling out EKS v1.33. Please make sure to update to our recommended client versions matching this upgrade. This upgrade promotes the in-place resource resize API to beta, sidecar containers have graduated to stable and deprecates the endpoints API. Next to that we are enabling the node auto repair feature on all clusters. This feature will automatically replace unhealthy nodes in your cluster, improving the overall reliability and availability of your cluster.
Timeline:
- Testing & rollout to non-production clusters has happened in the past days
- Production rollouts are expected to finish at the end of next week
- Update this changelog when everything is finished
Important changes between K8s 1.32 and 1.33
This following list is a selection of the most important changes in Kubernetes 1.33 from a user point of view:
- In-Place Pod Resource Resize (Beta): In-place resource resize has been promoted to beta, allowing dynamic updates to CPU and memory resources for existing Pods without restarts - enabling vertical scaling of stateful workloads with zero downtime and seamless resource adjustments based on traffic patterns.
- Sidecar Containers (Stable): Sidecar containers have graduated to stable, implementing sidecars as special init containers with restartPolicy: Always that start before application containers, run throughout the pod lifecycle, and support probes for operational state signaling.
- Endpoints API (Deprecation): The Endpoints API is now officially deprecated and will return warnings when accessed - migrate workloads and scripts to use the EndpointSlices API instead, which supports modern features like dual-stack networking and handles multiple EndpointSlices per Service.
For detailed info on what’s new and changed, please make sure to check the Kubernetes 1.33 release announcement and the full Kubernetes 1.33.x changelog.
EKS specific updates
AWS EKS 1.33 announcement blog and release notes.
In the process of upgrading EKS, we have also upgraded the following components:
- AWS EKS AMI to the latest version
v20251007 - CoreDNS to
v1.12.4-eksbuild.1 - Karpenter to
v1.8.0 - KubeProxy to
v1.33.3-eksbuild.6
Actions to take
There are no specific actions to take for you this release.