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Add system service-level GOMAXPROCS configuration support
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1 parent d206ded commit fd3eecb

11 files changed

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‎machineconfiguration/v1/tests/kubeletconfigs.machineconfiguration.openshift.io/GomaxprocsInjection.yaml‎

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apiVersion: apiextensions.k8s.io/v1 # Hack because controller-gen complains if we don't have this
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name: "KubeletConfig"
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crdName: kubeletconfigs.machineconfiguration.openshift.io
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featureGates:
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- GomaxprocsInjection
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tests:
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onCreate:
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- name: Should be able to create KubeletConfig with systemGomaxprocsBehavior set to Autosize
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initial: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec:
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systemGomaxprocsBehavior: Autosize
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expected: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec:
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systemGomaxprocsBehavior: Autosize
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- name: Should be able to create KubeletConfig with systemGomaxprocsBehavior set to Disabled
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initial: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec:
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systemGomaxprocsBehavior: Disabled
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expected: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec:
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systemGomaxprocsBehavior: Disabled
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- name: Should fail if systemGomaxprocsBehavior has an invalid value
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initial: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec:
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systemGomaxprocsBehavior: Enabled
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expectedError: "spec.systemGomaxprocsBehavior: Unsupported value"
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- name: Should be able to create KubeletConfig without systemGomaxprocsBehavior
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initial: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec: {}
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expected: |
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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spec: {}

‎machineconfiguration/v1/types.go‎

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@@ -769,6 +769,21 @@ type KubeletConfigSpec struct {
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// +optional
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TLSSecurityProfile *configv1.TLSSecurityProfile `json:"tlsSecurityProfile,omitempty"`
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// systemGomaxprocsBehavior controls whether the kubelet-auto-node-size service automatically configures
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// GOMAXPROCS for kubelet and CRI-O system services based on the system reserved CPU allocation.
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// Valid values are "Autosize" and "Disabled".
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// When set to "Autosize", the GOMAXPROCS environment variable for kubelet and CRI-O is set to
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// max(ceil(system_reserved_cpu), 1). This optimizes the runtime parallelism of these Go-based system
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// services based on their CPU allocation rather than total node capacity.
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// When set to "Disabled", automatic GOMAXPROCS configuration is disabled and the system services
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// use Go's default GOMAXPROCS behavior.
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// When omitted, this means no opinion and the platform is left to choose a reasonable default, which is subject to change over time.
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// The current default is "Disabled".
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//
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// +openshift:enable:FeatureGate=GomaxprocsInjection
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// +optional
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// +kubebuilder:validation:Enum=Autosize;Disabled
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SystemGomaxprocsBehavior GomaxprocsBehaviorType `json:"systemGomaxprocsBehavior,omitempty"`
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}
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// KubeletConfigStatus defines the observed state of a KubeletConfig

‎machineconfiguration/v1/zz_generated.crd-manifests/0000_80_machine-config_01_kubeletconfigs-CustomNoUpgrade.crd.yaml‎

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type: object
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type: object
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x-kubernetes-map-type: atomic
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systemGomaxprocsBehavior:
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description: |-
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systemGomaxprocsBehavior controls whether the kubelet-auto-node-size service automatically configures
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GOMAXPROCS for kubelet and CRI-O system services based on the system reserved CPU allocation.
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Valid values are "Autosize" and "Disabled".
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When set to "Autosize", the GOMAXPROCS environment variable for kubelet and CRI-O is set to
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max(ceil(system_reserved_cpu), 1). This optimizes the runtime parallelism of these Go-based system
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services based on their CPU allocation rather than total node capacity.
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When set to "Disabled", automatic GOMAXPROCS configuration is disabled and the system services
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use Go's default GOMAXPROCS behavior.
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When omitted, this means no opinion and the platform is left to choose a reasonable default, which is subject to change over time.
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The current default is "Disabled".
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enum:
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- Autosize
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- Disabled
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type: string
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tlsSecurityProfile:
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description: |-
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tlsSecurityProfile configures TLS settings for the kubelet.

‎machineconfiguration/v1/zz_generated.crd-manifests/0000_80_machine-config_01_kubeletconfigs-DevPreviewNoUpgrade.crd.yaml‎

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type: object
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type: object
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x-kubernetes-map-type: atomic
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systemGomaxprocsBehavior:
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description: |-
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systemGomaxprocsBehavior controls whether the kubelet-auto-node-size service automatically configures
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GOMAXPROCS for kubelet and CRI-O system services based on the system reserved CPU allocation.
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Valid values are "Autosize" and "Disabled".
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When set to "Autosize", the GOMAXPROCS environment variable for kubelet and CRI-O is set to
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max(ceil(system_reserved_cpu), 1). This optimizes the runtime parallelism of these Go-based system
133+
services based on their CPU allocation rather than total node capacity.
134+
When set to "Disabled", automatic GOMAXPROCS configuration is disabled and the system services
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use Go's default GOMAXPROCS behavior.
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When omitted, this means no opinion and the platform is left to choose a reasonable default, which is subject to change over time.
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The current default is "Disabled".
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enum:
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- Autosize
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- Disabled
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type: string
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tlsSecurityProfile:
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description: |-
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tlsSecurityProfile configures TLS settings for the kubelet.

‎machineconfiguration/v1/zz_generated.crd-manifests/0000_80_machine-config_01_kubeletconfigs-TechPreviewNoUpgrade.crd.yaml‎

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@@ -123,6 +123,22 @@ spec:
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type: object
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type: object
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x-kubernetes-map-type: atomic
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systemGomaxprocsBehavior:
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description: |-
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systemGomaxprocsBehavior controls whether the kubelet-auto-node-size service automatically configures
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GOMAXPROCS for kubelet and CRI-O system services based on the system reserved CPU allocation.
130+
Valid values are "Autosize" and "Disabled".
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When set to "Autosize", the GOMAXPROCS environment variable for kubelet and CRI-O is set to
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max(ceil(system_reserved_cpu), 1). This optimizes the runtime parallelism of these Go-based system
133+
services based on their CPU allocation rather than total node capacity.
134+
When set to "Disabled", automatic GOMAXPROCS configuration is disabled and the system services
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use Go's default GOMAXPROCS behavior.
136+
When omitted, this means no opinion and the platform is left to choose a reasonable default, which is subject to change over time.
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The current default is "Disabled".
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enum:
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- Autosize
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- Disabled
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type: string
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tlsSecurityProfile:
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description: |-
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tlsSecurityProfile configures TLS settings for the kubelet.

‎machineconfiguration/v1/zz_generated.featuregated-crd-manifests.yaml‎

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Capability: ""
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Category: ""
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FeatureGates:
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- GomaxprocsInjection
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- TLSGroupPreferences
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FilenameOperatorName: machine-config
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FilenameOperatorOrdering: "01"

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