Azure Kubernetes Service Now Supports Windows Server 2022 — Redmondmag.com

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Azure Kubernetes Service now supports Windows Server 2022

Microsoft on Monday announced the “general availability” retail version of Windows Server 2022 on Azure Kubernetes Service (AKS).

Windows Server 2022 was announced last month as a separate commercially available product. It is now available as an option for the AKS service, either as a host or as a virtual machine image. Previously, AKS subscribers could use Windows Server 2019 or Ubuntu Linux.

“In AKS, the VM image of the nodes in your cluster is based on Ubuntu Linux or Windows Server 2019,” Microsoft’s AKS “concepts” article had explained, dated September 14.

Organizations gain image size benefits using Windows Server 2022 with AKS compared to Windows Server 2019. Container base image size is “up to 30%” smaller with Windows Server 2022 Microsoft also claimed that Windows Server 2022 Nano Server and Sever Core images are “up to 10% and 14% respectively” smaller than images available with Windows Server 2019.

Windows Server 2022 users on AKS also get networking benefits that “have not been backported to Windows Server 2019.” These benefits include:

• Faster synchronization of proxy rules for large clusters
• Support for session affinity where “connections from a particular client are forwarded to the same pod every time”
• More reliable base container operations, especially regarding “setup and teardown”, and
• Improved packet forwarding performance in Hyper-V Virtual Switch.

Organizations wanting to upgrade from Windows Server 2019 to Windows Server 2022 must create a “separate node pool for Windows Server 2022” because the two operating systems “cannot coexist on the same node pool on AKS,” explained Microsoft in August. announcement.

Organizations will need Kubernetes 1.23 to use Windows Server 2022 on AKS.

“Windows Server 2022 is supported on node pools running Kubernetes 1.23 and later, with containerd as the container runtime,” Microsoft’s announcement said on Monday.