Container Engine for Kubernetes now supports Kubernetes version 1.27.10, in addition to versions 1.29.1 and 1.28.2. With the availability of support for Kubernetes version 1.27.10, Container Engine for Kubernetes will cease support for Kubernetes version 1.27.2 on May 21, 2024. Oracle strongly recommends you immediately upgrade clusters to Kubernetes version 1.27.10, 1.28.2, or 1.29.1.

Note the following:

• Although Kubernetes version 1.27.2 will not be supported after May 21, 2024, it might continue to be available for selection. However, Oracle strongly recommends you upgrade clusters to Kubernetes version 1.27.10, 1.28.2, or 1.29.1.

To upgrade a cluster to a new Kubernetes minor version:

1. Upgrade the Kubernetes version running on the control plane by following the instructions in Upgrading the Kubernetes Version on Control Plane Nodes in a Cluster.
2. Having upgraded the control plane, upgrade the Kubernetes version running on worker nodes in a node pool by following the instructions in Upgrading the Kubernetes Version on Worker Nodes in a Cluster.

Note:

Always follow the Kubernetes skew policy for Kubernetes minor version support. Note that in Kubernetes version 1.28, the Kubernetes skew policy has expanded. Prior to Kubernetes version 1.28, the skew policy required a cluster's control plane nodes to be no more than two versions ahead of worker nodes. From Kubernetes version 1.28, the Kubernetes skew policy allows control plane nodes to be up to three versions ahead of worker nodes.

Example skew policy:

• Kubernetes control plane nodes are at version 1.29.1
• Kubernetes worker nodes must be at version 1.29.1, 1.28.2, 1.27.10, or 1.26.7

Note that although the worker nodes in a node pool must follow the Kubernetes skew policy, you do not have to upgrade them one minor version at a time.

For more information, see Upgrading Clusters to Newer Kubernetes Versions.