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Anirudh Murali
Anirudh Murali

Reputation: 633

GKE Usage Metering: "kube:system-overhead" namespace

We currently have GKE Usage Metering on our Kubernetes clusters. When we ran queries on our billing dataset and the GKE resource usage with BigQuery, we found an expensive line item in our billing datasets with kube:system-overhead as namespace. Unable to find any GCP documentation on this.

While there is a blog post suggesting to ignore this namespace, it doesn't mention the reason. Also, the line item for us is expensive to be ignored.

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Would like to know what's overhead and its relation to cost in Kubernetes. Can someone who has worked with Kubernetes cost management shed some light on this?

Upvotes: 0

Views: 568

Answers (1)

Alex Nunez Priego
Alex Nunez Priego

Reputation: 75

The [kube:system-overhead] is a dummy namespace that captures resources reserved for Kubernetes’ non-containerized node components, and the amount of resources is the difference between node capacity and node allocatable. These resources are used by non-containerized processes such as kubelet and docker daemon. Resources used by system pods such as kube-dns are attributed to the kube-system namespace. That means these are resources used by [1].

[1] https://cloud.google.com/kubernetes-engine/docs/concepts/cluster-architecture#memory_cpu

Upvotes: 0

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