It is not possible to configure autoSizingReserved: true via a PerformanceProfile and have it reflected in the KubeletConfig generated from that PerformanceProfile. This prevents customers from using the Automatically allocating resources for nodes feature[1] of OpenShift in combination with a PerformanceProfile because only a single KubeletConfig is applied/supported.

The PerformanceProfile can contain a kubeletconfig.experimental annotation that added the contents of that annotation to KubeletConfig.spec.kubeletConfig, however autoSizingReserved needs to be declared at the parent level, i.e. KubeletConfig.spec.autoSizingReserved (not KubeletConfig.spec.kubeletConfig.autoSizingReserved)

Related slack discussion: https://redhat-internal.slack.com/archives/CQNBUEVM2/p1739565760777209

[1] https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/nodes/working-with-nodes#nodes-nodes-resources-configuring-auto_nodes-nodes-resources-configuring

All versions

100%   

    1. create a PerformanceProfile with metatadat.annotations.kubeletconfig.experimental: "autoSizingReserved: true"
    2. Apply PerformanceProfile
    3. Retrieve KubeletConfig. The KubeletConfig.spec.autoSizingReserved property is not present under KubeletConfig.spec.
    

The KubeletConfig.spec.autoSizingReserved property is not present under KubeletConfig.spec

The KubeletConfig.spec.autoSizingReserved property should be present under KubeletConfig.spec

Related slack discussion: https://redhat-internal.slack.com/archives/CQNBUEVM2/p1739565760777209