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don't watch headless services on kubelet

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The kubelet watches services only to generate the environment variables
inside a pod, but headless services are not needed for this.

Change-Id: I22ee2b3352f8fe71cddfafa6f09b768c0a0e26b4
This commit is contained in:
Antonio Ojea 2023-12-31 18:31:22 +00:00
parent 0595ec7942
commit 5122fe0732
1 changed files with 5 additions and 1 deletions
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6
pkg/kubelet/kubelet.go
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@ -451,7 +451,11 @@ func NewMainKubelet(kubeCfg *kubeletconfiginternal.KubeletConfiguration,
var serviceLister corelisters.ServiceLister
var serviceHasSynced cache.InformerSynced
if kubeDeps.KubeClient != nil {
kubeInformers := informers.NewSharedInformerFactoryWithOptions(kubeDeps.KubeClient, 0)
// don't watch headless services, they are not needed since this informer is only used to create the environment variables for pods.
// See https://issues.k8s.io/122394
kubeInformers := informers.NewSharedInformerFactoryWithOptions(kubeDeps.KubeClient, 0, informers.WithTweakListOptions(func(options *metav1.ListOptions) {
options.FieldSelector = fields.OneTermNotEqualSelector("spec.clusterIP", v1.ClusterIPNone).String()
}))
serviceLister = kubeInformers.Core().V1().Services().Lister()
serviceHasSynced = kubeInformers.Core().V1().Services().Informer().HasSynced
kubeInformers.Start(wait.NeverStop)