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kubernetes - Pod 处于待处理阶段（错误：FailedScheduling：节点与节点选择器不匹配）

问题描述

我有一个豆荚的问题。它说它处于待处理状态。

如果我描述 pod，这就是我可以看到的：

Events:
  Type     Reason             Age                From                Message
  ----     ------             ----               ----                -------
  Normal   NotTriggerScaleUp  1m (x58 over 11m)  cluster-autoscaler  pod didn't trigger scale-up (it wouldn't fit if a new node is added): 2 node(s) didn't match node selector
  Warning  FailedScheduling   1m (x34 over 11m)  default-scheduler   0/6 nodes are available: 6 node(s) didn't match node selector.

如果我检查日志，那里什么都没有（它只是输出空值）。

--- 更新 --- 这是我的 pod yaml 文件

apiVersion: v1
kind: Pod
metadata:
  annotations:
    checksum/config: XXXXXXXXXXX
    checksum/dashboards-config: XXXXXXXXXXX
  creationTimestamp: 2020-02-11T10:15:15Z
  generateName: grafana-654667db5b-
  labels:
    app: grafana-grafana
    component: grafana
    pod-template-hash: "2102238616"
    release: grafana
  name: grafana-654667db5b-tnrlq
  namespace: monitoring
  ownerReferences:
  - apiVersion: apps/v1
    blockOwnerDeletion: true
    controller: true
    kind: ReplicaSet
    name: grafana-654667db5b
    uid: xxxx-xxxxx-xxxxxxxx-xxxxxxxx
  resourceVersion: "98843547"
  selfLink: /api/v1/namespaces/monitoring/pods/grafana-654667db5b-tnrlq
  uid: xxxx-xxxxx-xxxxxxxx-xxxxxxxx
spec:
  containers:
  - env:
    - name: GF_SECURITY_ADMIN_USER
      valueFrom:
        secretKeyRef:
          key: xxxx
          name: grafana
    - name: GF_SECURITY_ADMIN_PASSWORD
      valueFrom:
        secretKeyRef:
          key: xxxx
          name: grafana
    - name: GF_INSTALL_PLUGINS
      valueFrom:
        configMapKeyRef:
          key: grafana-install-plugins
          name: grafana-config
    image: grafana/grafana:5.0.4
    imagePullPolicy: Always
    name: grafana
    ports:
    - containerPort: 3000
      protocol: TCP
    readinessProbe:
      failureThreshold: 3
      httpGet:
        path: /api/health
        port: 3000
        scheme: HTTP
      initialDelaySeconds: 30
      periodSeconds: 10
      successThreshold: 1
      timeoutSeconds: 30
    resources:
      requests:
        cpu: 200m
        memory: 100Mi
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /etc/grafana
      name: config-volume
    - mountPath: /var/lib/grafana/dashboards
      name: dashboard-volume
    - mountPath: /var/lib/grafana
      name: storage-volume
    - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
      name: default-token-tqb6j
      readOnly: true
  dnsPolicy: ClusterFirst
  initContainers:
  - command:
    - sh
    - -c
    - cp /tmp/config-volume-configmap/* /tmp/config-volume 2>/dev/null || true; cp
      /tmp/dashboard-volume-configmap/* /tmp/dashboard-volume 2>/dev/null || true
    image: busybox
    imagePullPolicy: Always
    name: copy-configs
    resources: {}
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /tmp/config-volume-configmap
      name: config-volume-configmap
    - mountPath: /tmp/dashboard-volume-configmap
      name: dashboard-volume-configmap
    - mountPath: /tmp/config-volume
      name: config-volume
    - mountPath: /tmp/dashboard-volume
      name: dashboard-volume
    - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
      name: default-token-tqb6j
      readOnly: true
  nodeSelector:
    nodePool: cluster
  priority: 0
  restartPolicy: Always
  schedulerName: default-scheduler
  securityContext: {}
  serviceAccount: default
  serviceAccountName: default
  terminationGracePeriodSeconds: 300
  tolerations:
  - effect: NoExecute
    key: node.kubernetes.io/not-ready
    operator: Exists
    tolerationSeconds: 300
  - effect: NoExecute
    key: node.kubernetes.io/unreachable
    operator: Exists
    tolerationSeconds: 300
  volumes:
  - emptyDir: {}
    name: config-volume
  - emptyDir: {}
    name: dashboard-volume
  - configMap:
      defaultMode: 420
      name: grafana-config
    name: config-volume-configmap
  - configMap:
      defaultMode: 420
      name: grafana-dashs
    name: dashboard-volume-configmap
  - name: storage-volume
    persistentVolumeClaim:
      claimName: grafana
  - name: default-token-tqb6j
    secret:
      defaultMode: 420
      secretName: default-token-tqb6j
status:
  conditions:
  - lastProbeTime: 2020-02-11T10:45:37Z
    lastTransitionTime: 2020-02-11T10:15:15Z
    message: '0/6 nodes are available: 6 node(s) didn''t match node selector.'
    reason: Unschedulable
    status: "False"
    type: PodScheduled
  phase: Pending
  qosClass: Burstable

你知道我应该如何进一步调试吗？

标签： kuberneteskubernetes-helmkubectlhelmfile

解决方案

解决方案：您可以执行以下两项操作之一，以允许调度程序完成您的 pod 创建请求。

  1. 您可以选择从 pod yaml 中删除这些行并从头开始重新创建 pod（如果出于某种原因需要选择器，请使用下一步 2 的方法）

    nodeSelector: 
    nodePool: cluster

或者

  1. 您可以确保将其nodePool: cluster作为标签添加到所有节点，以便使用可用的选择器安排 pod。

您可以使用此命令标记所有节点

kubectl label nodes <your node name> nodePool=cluster

通过从集群详细信息中替换每个节点的节点名称或仅使用此标签选择要选择的节点来运行上述命令。

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