To obtain the "Allocated resources:" from the output of kubectl describe node <node-name>, what query should be used?

[githubeto]

I believe that the most accurate value for determining whether a Pod can be scheduled is the Requests section under
"Allocated resources:" obtained from kubectl describe node .

This is because if these values are close to 100% (for example, 99%), attempting to schedule a Pod will result in a resource shortage, making it impossible to schedule.

So, how can we obtain this value using a Prometheus query in Grafana?

The reason I am asking this question is that while the query
kube_node_status_allocatable{resource="memory"}
can be used to obtain the total capacity of the node, the sum of the memory requests of currently scheduled Pods obtained with
sum by (node) (kube_pod_container_resource_requests{resource="memory"})
clearly exceeds the node's capacity. Each of my nodes has 16Gi of memory, but this query returns a total that exceeds 16Gi.

• sum by (node) (kube_pod_container_resource_requests{resource="memory"})
  

18.2Gi ...? (Worker node is 16Gi memory spec.)

[k8s-ci-robot]

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