[NodeResourceTopology] filter rejects pods using ephemeral-storage

[Phil Sphicas]

Area

• Scheduler
• Controller
• Helm Chart
• Documents

Other components

No response

What happened?

Scheduling of pod that should be NUMA aligned but uses ephemeral storage fails with "cannot align pod".

  Type     Reason            Age   From               Message
  ----     ------            ----  ----               -------
  Warning  FailedScheduling  74s   default-scheduler  0/9 nodes are available: 2 Insufficient hugepages-1Gi, 4 Insufficient cpu, 5 cannot align pod: test-deployment-55fb46fb77-2dz5t. preemption: 0/9 nodes are available: 9 No preemption victims found for incoming pod.

The filter logic rejects it because ephemeral-storage lacks NUMA affinity.

I0905 20:17:32.330205       1 filter.go:141] "early verdict" logID="default/test-deployment-55fb46fb77-2dz5t/test-deployment-1-container-1" node="b37dev08a1co03" resource="ephemeral-storage" suitable="false"

Special handling may be required, similar to #355

What did you expect to happen?

The filter should ignore ephemeral-storage when considering NUMA alignment.

How can we reproduce it (as minimally and precisely as possible)?

No response

Anything else we need to know?

No response

Kubernetes version

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"26", GitVersion:"v1.26.3", GitCommit:"f18584a06fc476806da2e340e2eed960659871e8", GitTreeState:"clean", BuildDate:"2023-06-12T18:45:20Z", GoVersion:"go1.19.7", Compiler:"gc", Platform:"linux/amd64"}
Kustomize Version: v4.5.7
Server Version: version.Info{Major:"1", Minor:"26", GitVersion:"v1.26.3", GitCommit:"f18584a06fc476806da2e340e2eed960659871e8", GitTreeState:"clean", BuildDate:"2023-06-12T18:45:20Z", GoVersion:"go1.19.7", Compiler:"gc", Platform:"linux/amd64"}

Scheduler Plugins version

v0.26.7

[Wei Huang]

cc @ffromani