Skyscrapers Changelog

This changelog lists all updates, improvements and new features our Engineering team develops for our Reference Solutions. These are rolled out automatically to all SRE-as-a-Service customers.

[Action required] Upgrades starting for K8s clusters to 1.25

30 Mar 2023 • Kubernetes
 kubernetes  upgrade  eks  aks

Update 2023-05-04: All clusters have been upgraded to v1.25.

We are starting to roll out AKS and EKS 1.25. This brings our supported AKS platforms to v1.25.5 and EKS to v1.25.6. This release includes the removal of several deprecated API Version, so please make sure to check Actions to take! Please also make sure to update to our recommended client versions mathcing this upgrade

Timeline:

  • Publish of this changelog
  • We start rollout of non-production cluster over the course of the following days
  • If we have detected (possible) use of older apiVersion in your environments, we will post a GitHub issue in your repository with the details
  • Production rollouts are planned to start during the week of 10/04
  • Update this changelog when everything is finished

Important changes between K8s 1.24 and 1.25

For more detailed info on what’s new and changed, please make sure to check the Kubernetes 1.25 release announcement and the full Kubernetes 1.25.x changelog.

Here’s a small list of some major themes:

  • Ephemeral Containers, useful for debugging, are now stable
  • Container registry moves from to
    • redirects to , and it will evetually be completely removed, [see the announcement for more info](https://kubernetes.io/blog/2023/03/10/image-registry-redirect/)
    • We have updated our remaining references to
  • PodSecurityPolicy (PSP) is removed, replaced by Pod Security Admission (PSA)

AKS specific changes

Azure AKS 1.25 GA release notes: https://github.com/Azure/AKS/releases/tag/2022-12-04.

EKS specific changes

AWS EKS 1.25 release notes: https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html#kubernetes-1.25.

In the process of upgrading EKS the following components have also been upgraded:

  • KubeProxy to v1.25.6
  • Cluster Autoscaler to v1.25.0
  • Metrics Server to v0.6.3

Actions to take

This release removes support for several deprecated API versions!

Most notable the following:

Others, which or unlikely to impact you:

  • EndpointSlice discovery.k8s.io/v1beta1 migrates to discovery.k8s.io/v1
  • Event events.k8s.io/v1beta1 migrates to events.k8s.io/v1
  • PodSecurityPolicy policy/v1beta1 has been removed!
  • RuntimeClass node.k8s.io/v1beta1 migrates to node.k8s.io/v1

All existing resources deployed to the Kubernetes clusters upgraded to v1.25 will keep on working, internal resources deployed via older apiVersions will automatically migrate. However the Kubernetes API will stop accepting manifests using these removed apiVersions. Concretely this means that if your manifests, helm charts, … are not updated, you will not be able to deploy new changes.

Please make sure to update your workloads accordingly to prevent development disruption. We will also post a GitHub issue in your repository if we have detected such use of older versions.

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