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Trim managedFields in controller-manager

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Signed-off-by: Eric Lin <exlin@google.com>
This commit is contained in:
Eric Lin 2023-06-04 20:32:35 +00:00
parent c86f562f29
commit 173b5a75b9
1 changed files with 11 additions and 2 deletions
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13
cmd/kube-controller-manager/app/controllermanager.go
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@ -29,6 +29,7 @@ import (
"github.com/spf13/cobra"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
@ -524,11 +525,19 @@ func GetAvailableResources(clientBuilder clientbuilder.ControllerClientBuilder)
// controllers such as the cloud provider and clientBuilder. rootClientBuilder is only used for
// the shared-informers client and token controller.
func CreateControllerContext(logger klog.Logger, s *config.CompletedConfig, rootClientBuilder, clientBuilder clientbuilder.ControllerClientBuilder, stop <-chan struct{}) (ControllerContext, error) {
// Informer transform to trim ManagedFields for memory efficiency.
trim := func(obj interface{}) (interface{}, error) {
if accessor, err := meta.Accessor(obj); err == nil {
accessor.SetManagedFields(nil)
}
return obj, nil
}
versionedClient := rootClientBuilder.ClientOrDie("shared-informers")
sharedInformers := informers.NewSharedInformerFactory(versionedClient, ResyncPeriod(s)())
sharedInformers := informers.NewSharedInformerFactoryWithOptions(versionedClient, ResyncPeriod(s)(), informers.WithTransform(trim))
metadataClient := metadata.NewForConfigOrDie(rootClientBuilder.ConfigOrDie("metadata-informers"))
metadataInformers := metadatainformer.NewSharedInformerFactory(metadataClient, ResyncPeriod(s)())
metadataInformers := metadatainformer.NewSharedInformerFactoryWithOptions(metadataClient, ResyncPeriod(s)(), metadatainformer.WithTransform(trim))
// If apiserver is not running we should wait for some time and fail only then. This is particularly
// important when we start apiserver and controller manager at the same time.