Which OpenShift/Kubernetes feature lets you see resource usage of nodes and pods?

Which OpenShift/Kubernetes feature lets you see resource usage of nodes and pods?

• A. ResourceQuota
• B. Metrics (via the metrics server, accessible with oc adm top or oc top)
• C. Logs
• D. Events API

Answer: (B)

The ability to see resource usage for nodes and pods comes from the Metrics Server, which provides the Metrics API. It collects CPU and memory usage data from kubelets on each node and for pods, then makes that data available so commands like oc top and oc adm top can display current usage. This gives you a real-time view of how resources are being consumed, helping with decisions about scaling and scheduling. ResourceQuota controls how much can be used or requested within a namespace but doesn’t provide live usage data. Logs show application output, not overall resource consumption, and the Events API records notable cluster events, not ongoing metrics.

The ability to see resource usage for nodes and pods comes from the Metrics Server, which provides the Metrics API. It collects CPU and memory usage data from kubelets on each node and for pods, then makes that data available so commands like oc top and oc adm top can display current usage. This gives you a real-time view of how resources are being consumed, helping with decisions about scaling and scheduling. ResourceQuota controls how much can be used or requested within a namespace but doesn’t provide live usage data. Logs show application output, not overall resource consumption, and the Events API records notable cluster events, not ongoing metrics.