Automatic upgrade of AKS

José María Gutiérrez 26 Reputation points
2022-11-03T11:50:42.993+00:00

Is it possible to have one AKS cluster with 2 upgrade paths? I mean, I want to have the node-image upgrade and the patch upgrade indicated in https://learn.microsoft.com/en-us/azure/aks/auto-upgrade-cluster#using-auto-upgrade, in order to have the patches (mainly security) in the node-image and in the Kubernetes control plane version.

Azure Kubernetes Service (AKS)
Azure Kubernetes Service (AKS)
An Azure service that provides serverless Kubernetes, an integrated continuous integration and continuous delivery experience, and enterprise-grade security and governance.
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  1. kobulloc-MSFT 23,341 Reputation points Microsoft Employee
    2022-11-03T20:46:24.047+00:00

    Hello, @José María Gutiérrez !

    Can I use two auto-upgrade channels at the same time?
    I reached out to an AKS SME for clarification here and the AKS auto-upgrade channels are intended to be different options with similar functionality. patch and node-image would behave similarly with the key difference being how you get your patches and node images.

    • patch: Automatically upgrades the cluster to the latest supported patch version when it becomes available while keeping the minor version the same as mentioned in the documentation. Doing a patch upgrade to AKS should also handle the node image version upgrade as long as there is a new node image available. For the most part, we can assume that a patch version would be long enough between versions that a new node image would be available.
    • node-image: Similar to patch except Microsoft provides new patches and images for image nodes on a frequent basis (usually weekly). You would need to have this channel turned on to get automatic updates when new versions are available.
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