How can I determine the current ephemeral-storage usage of a running Kubernetes pod?

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You can do this through the raw command.

kubectl get --raw "/api/v1/nodes/(your-node-name)/proxy/stats/summary"

There is also this

kubectl get --raw "/api/v1/nodes/(your-node-name)/proxy/metrics/cadvisor""

EDIT:

I’ve created a Prometheus exporter for this now.

https://github.com/jmcgrath207/k8s-ephemeral-storage-metrics

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