CODEWITHSUNDEEP
kubernetes
Sam Kennedy
Sam Kennedy

Reputation: 1

problems with configure multiple schedulers in k8s cluster

scheduler as custom scheduler by https://kubernetes.io/docs/tasks/extend-kubernetes/configure-multiple-schedulers/. And, I bind my ServiceAccount kube-system:my-scheduler with ClusterRole cluster-admin. My my-scheduler.yaml shows next.

apiVersion: v1
kind: ServiceAccount
metadata:
  name: my-scheduler
  namespace: kube-system

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: my-scheduler-as-kube-scheduler
subjects:
- kind: ServiceAccount
  name: my-scheduler
  namespace: kube-system
roleRef:
  kind: ClusterRole
  name: cluster-admin
  apiGroup: rbac.authorization.k8s.io

And, my-scheduler pod can successfully run. When I deploy pods that I schedule with the .spec.schedulerName set to my-scheduler, the pod wasn't scheduled. And the pod is pending status. I checked the my-scheduler pod log using kubectl logs -f my-scheduler-8699f6f86-vvn5p -n kube-system command. And the error info describes as following. I don't know why my-scheduler Failed to watch *v1.CSIStorageCapacity.

W1108 07:05:16.968419       1 reflector.go:424] vendor/k8s.io/client-go/informers/factory.go:149: failed to list *v1.CSIStorageCapacity: the server could not find the requested resource
E1108 07:05:16.968443       1 reflector.go:140] vendor/k8s.io/client-go/informers/factory.go:149: Failed to watch *v1.CSIStorageCapacity: failed to list *v1.CSIStorageCapacity: the server could not find the requested resource

Can anyone figure out the solution to the problem?

Upvotes: 0

Views: 346

Answers (1)

Sam Kennedy
Sam Kennedy

Reputation: 1

The versions of k8s components in my k8s cluster are shown next. I am sure that it's not incompatibleness between k8s components to result the problem.

[root@compileHost pluginsDir]# kubectl get nodes -o yaml | grep -i 'apiserver'
      - registry.aliyuncs.com/google_containers/kube-apiserver@sha256:d10db42c2353539ce15006854edfb6707ba6025f282d59d962729ed3b6039004
      - registry.aliyuncs.com/google_containers/kube-apiserver:v1.23.0

[root@compileHost pluginsDir]# kubectl get nodes -o yaml | grep -i 'kubelet'
      message: kubelet has sufficient memory available
      reason: KubeletHasSufficientMemory
      message: kubelet has no disk pressure
      reason: KubeletHasNoDiskPressure
      message: kubelet has sufficient PID available
      reason: KubeletHasSufficientPID
      message: kubelet is posting ready status
      reason: KubeletReady
      kubeletEndpoint:
      kubeletVersion: v1.23.0
      message: kubelet has sufficient memory available
      reason: KubeletHasSufficientMemory
      message: kubelet has no disk pressure
      reason: KubeletHasNoDiskPressure
      message: kubelet has sufficient PID available
      reason: KubeletHasSufficientPID
      message: kubelet is posting ready status
      reason: KubeletReady
      kubeletEndpoint:
      kubeletVersion: v1.23.0
[root@compileHost pluginsDir]# kubectl get nodes -o yaml | grep -i 'kube-controller-manager'
      - registry.aliyuncs.com/google_containers/kube-controller-manager@sha256:0bfbb13e5e9cec329523b6f654687af8ce058adbc90b42e5af7a929ac22e2a53
      - registry.aliyuncs.com/google_containers/kube-controller-manager:v1.23.0
[root@compileHost pluginsDir]# kubectl get nodes -o yaml | grep -i 'kube-scheduler'
      - k8s.gcr.io/scheduler-plugins/kube-scheduler@sha256:880fb6f6b4bfa0d229d317c2f223313e3334ac013b6697a797bb16584d57f7c7
      - k8s.gcr.io/scheduler-plugins/kube-scheduler:v0.23.10
      - localhost:5000/scheduler-plugins/kube-scheduler:latest
      - registry.aliyuncs.com/google_containers/kube-scheduler@sha256:af8166ce28baa7cb902a2c0d16da865d5d7c892fe1b41187fd4be78ec6291c23
      - registry.aliyuncs.com/google_containers/kube-scheduler:v1.23.0
      - localhost:5000/scheduler-plugins/my-kube-scheduler:1.0
      - k8s.gcr.io/scheduler-plugins/kube-scheduler@sha256:880fb6f6b4bfa0d229d317c2f223313e3334ac013b6697a797bb16584d57f7c7
      - k8s.gcr.io/scheduler-plugins/kube-scheduler:v0.23.10
      - localhost:5000/scheduler-plugins/kube-scheduler:latest
      - registry.aliyuncs.com/google_containers/kube-scheduler@sha256:af8166ce28baa7cb902a2c0d16da865d5d7c892fe1b41187fd4be78ec6291c23
      - registry.aliyuncs.com/google_containers/kube-scheduler:v1.23.0
      - localhost:5000/scheduler-plugins/my-kube-scheduler:1.0

Upvotes: 0

Related Questions