Exam Professional Cloud DevOps Engineer topic 1 question 156 discussion

The container/ephemeral_storage/used_bytes metric seems correct.

https://cloud.google.com/monitoring/api/metrics_kubernetes#:~:text=container/ephemeral_storage/used_bytes The container/ephemeral_storage/used_bytes metric can help you identify which pods are consuming ephemeral storage and potentially causing the DiskPressure condition. why not A? The node/ephemeral_storage/used_bytes metric would show the total ephemeral storage used on a node, but it wouldn't help you identify which pods are consuming the storage.

To identify which Pods are causing the DiskPressure node condition due to ephemeral volumes, you should check the container/ephemeral_storage/used_bytes metric using Metrics Explorer. Therefore, the correct answer is B. This metric provides information about the ephemeral storage usage of containers within Pods. By examining this metric, you can identify the specific Pods that are contributing to the DiskPressure condition on the worker nodes. Metrics Explorer allows you to visualize and analyze metrics data, making it a suitable tool for investigating resource usage and identifying potential issues in a GKE environment.

Vote B

This approach provides the necessary detail to identify which Pods are causing the DiskPressure condition without the need for direct access to the nodes or the ability to execute commands on them. Metrics Explorer in Google Cloud's operations suite (formerly Stackdriver) allows you to query and visualize metrics from your GKE environment, making it a powerful tool for this kind of diagnostic task.

I think the answer is B. You need to use container/ephemeral_storage/used_bytes because you need to identify the pod that is causing the problem. pod/ephemeral_storage/used_bytes also exists, but it is still in beta. https://cloud.google.com/monitoring/api/metrics_kubernetes

Why not B?

A: node/ephemeral_storage/used_bytes GA Ephemeral storage usage GAUGE, INT64, By k8s_node Local ephemeral storage bytes used by the node. Sampled every 60 seconds.

https://cloud.google.com/monitoring/api/metrics_kubernetes