Hello @Akash Sharma
Thank you for reaching out to the Microsoft Q&A platform.
The error message you are seeing indicates that the Kubernetes version 1.27.1 is not yet ready for use on Linux. This means that the upgrade to version 1.27.1 is not currently supported for AKS Arc clusters running on Linux nodes.
To resolve this issue, you can try upgrading to a different version of Kubernetes that is supported on Linux nodes. You can check the list of supported Kubernetes versions for AKS Arc clusters on the Microsoft documentation website.
Alternatively, you can try upgrading your AKS Arc cluster to a newer version of AKS Arc that supports Kubernetes version 1.27.1 on Linux nodes. You can check the release notes for AKS Arc to see which versions support Kubernetes version 1.27.1 on Linux nodes.
I hope this helps! Let me know if you have any further questions.
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