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The EOL note for this AKS version states the following:
Will I be able to create new AKS clusters using 1.23.x from April 2 through the grace period in bullet 2 or is it saying that existing AKS cluster will continue to work, but new AKS cluster will fail with some form on "invalid AKS Version" error
Hello,
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@Graeme Thomson Just following up to see if my answer below helped you, if so, please don’t forget to "Accept the answer" and “up-vote”. Feel free to reply to that answer with any follow-up questions you may have. It is also very helpful if you rate the answer. Have a great day!
I understand you want to know if you will be able to create new v1.23.x after April 2 during the grace period.
After April 2, 2023, you will not be able to create new AKS clusters using 1.23.x. Existing clusters will continue to work and be supported during the 30 day grace period. You won't be allowed to add node pools of the deprecated version to your cluster. Clusters will continue to work after the grace period but no longer be supported. More information about this can be found in this FAQ.
What does 'Outside of Support' mean
'Outside of Support' means that:
The version you're running is outside of the supported versions list.
You'll be asked to upgrade the cluster to a supported version when requesting support, unless you're within the 30-day grace period after version deprecation.
Additionally, AKS doesn't make any runtime or other guarantees for clusters outside of the supported versions list.
Hope this answers your question. Let me know if you need anything else!
Please don’t forget to "Accept the answer" and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.