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Kubernetes、水平ポッドオートスケーリングが機能しない：ターゲットが不明です

2017-05-14 4 views
4

kubernetesで水平ポッドオートスケーリングを作成しようとしていますが、動作していません。 Kubernetesにはkubeadmがインストールされています。 hpaに列Targetsが定義されていません。Kubernetes、水平ポッドオートスケーリングが機能しない：ターゲットが不明です

kubectl get hpa 
NAME  REFERENCE    TARGETS   MINPODS MAXPODS REPLICAS AGE 
fibonacci Deployment/fibonacci <unknown>/50% 1   3   1   1h

kubectl describe hpa fibonacciの出力は、CPUメトリックがcAdvisorなくHeapsterによって提供されている

Name:       fibonacci 
Namespace:      default 
Labels:       <none> 
Annotations:      <none> 
CreationTimestamp:     Sun, 14 May 2017 18:08:53 +0000 
Reference:      Deployment/fibonacci 
Metrics:      (current/target) 
    resource cpu on pods (as a percentage of request): <unknown>/50% 
Min replicas:      1 
Max replicas:      3 
Events: 
    FirstSeen LastSeen Count From    SubObjectPath Type  Reason    Message 
    --------- -------- ----- ----    ------------- -------- ------    ------- 
    1h  3s  148 horizontal-pod-autoscaler   Warning  FailedGetResourceMetric  unable to get metrics for resource cpu: no metrics returned from heapster 
    1h  3s  148 horizontal-pod-autoscaler   Warning  FailedComputeMetricsReplicas failed to get cpu utilization: unable to get metrics for resource cpu: no metrics returned from heapster

あります。なぜhpaがcAdvisorではなくheapsterによってこのメトリックを受け取ろうとしているのですか？誰でも私を助けることができますか？

以下に他の情報があります。

ポッドには制限と要求が定義されています。これは私の展開

apiVersion: extensions/v1beta1 
kind: Deployment 
metadata: 
    name: fibonacci 
    labels: 
    app: fibonacci 
spec: 
    template: 
    metadata: 
     labels: 
     app: fibonacci 
    spec: 
     containers: 
     - name: fibonacci 
     image: oghma/fibonacci 
     ports: 
      - containerPort: 8088 
     resources: 
      requests: 
      memory: "64Mi" 
      cpu: "75m" 
      limits: 
      memory: "128Mi" 
      cpu: "100m" 

--- 
kind: Service 
apiVersion: v1 
metadata: 
    name: fibonacci 
spec: 
    selector: 
    app: fibonacci 
    ports: 
    - protocol: TCP 
     port: 8088 
     targetPort: 8088 
    externalIPs: 
    - 192.168.66.103 

--- 
apiVersion: autoscaling/v1 
kind: HorizontalPodAutoscaler 
metadata: 
    name: fibonacci 
spec: 
    scaleTargetRef: 
    apiVersion: apps/v1beta1 
    kind: Deployment 
    name: fibonacci 
    minReplicas: 1 
    maxReplicas: 3 
    targetCPUUtilizationPercentage: 50

であり、これは私がheapsterインストールdescribe pods

kubectl describe pods 
Name:  fibonacci-1503002127-3k755 
Namespace: default 
Node:  kubernetesnode1/192.168.66.101 
Start Time: Sun, 14 May 2017 17:47:08 +0000 
Labels:  app=fibonacci 
     pod-template-hash=1503002127 
Annotations: kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"default","name":"fibonacci-1503002127","uid":"59ea64bb-38cd-11e7-b345-fa163edb1ca... 
Status:  Running 
IP:  192.168.202.1 
Controllers: ReplicaSet/fibonacci-1503002127 
Containers: 
    fibonacci: 
    Container ID: docker://315375c6a978fd689f4ba61919c15f15035deb9139982844cefcd46092fbec14 
    Image:  oghma/fibonacci 
    Image ID:  docker://sha256:26f9b6b2c0073c766b472ec476fbcd2599969b6e5e7f564c3c0a03f8355ba9f6 
    Port:  8088/TCP 
    State:  Running 
     Started:  Sun, 14 May 2017 17:47:16 +0000 
    Ready:  True 
    Restart Count: 0 
    Limits: 
     cpu: 100m 
     memory: 128Mi 
    Requests: 
     cpu:  75m 
     memory:  64Mi 
    Environment: <none> 
    Mounts: 
     /var/run/secrets/kubernetes.io/serviceaccount from default-token-45kp8 (ro) 
Conditions: 
    Type  Status 
    Initialized True 
    Ready  True 
    PodScheduled True 
Volumes: 
    default-token-45kp8: 
    Type: Secret (a volume populated by a Secret) 
    SecretName: default-token-45kp8 
    Optional: false 
QoS Class: Burstable 
Node-Selectors: <none> 
Tolerations: node.alpha.kubernetes.io/notReady=:Exists:NoExecute for 300s 
     node.alpha.kubernetes.io/unreachable=:Exists:NoExecute for 300s 
Events:  <none>

の出力であり、

kubectl get pods --namespace=kube-system 
NAME          READY  STATUS RESTARTS AGE 
calico-etcd-k1g53       1/1  Running 0   2h 
calico-node-6n4gp       2/2  Running 1   2h 
calico-node-nhmz7       2/2  Running 0   2h 
calico-policy-controller-1324707180-65m78 1/1  Running 0   2h 
etcd-kubernetesmaster      1/1  Running 0   2h 
heapster-1428305041-zjzd1     1/1  Running 0   1h 
kube-apiserver-kubernetesmaster    1/1  Running 0   2h 
kube-controller-manager-kubernetesmaster 1/1  Running 0   2h 
kube-dns-3913472980-gbg5h     3/3  Running 0   2h 
kube-proxy-1dt3c       1/1  Running 0   2h 
kube-proxy-tfhr9       1/1  Running 0   2h 
kube-scheduler-kubernetesmaster    1/1  Running 0   2h 
monitoring-grafana-3975459543-9q189   1/1  Running 0   1h 
monitoring-influxdb-3480804314-7bvr3  1/1  Running 0   1h

に位置KUBE-コントローラ-れるManager.logを（実行しています/ var/log/container/kube-controller-manager.log）これを表示する

"log":"I0514 17:47:08.631314  1 event.go:217] Event(v1.ObjectReference{Kind:\"Deployment\", Namespace:\"default\", Name:\"fibonacci\", UID:\"59e980d9-38cd-11e7-b345-fa163edb1ca6\", APIVersion:\"extensions\", ResourceVersion:\"1303\", FieldPath:\"\"}): type: 'Normal' reason: 'ScalingReplicaSet' Scaled up replica set fibonacci-1503002127 to 1\n","stream":"stderr","time":"2017-05-14T17:47:08.63177467Z"} 
{"log":"I0514 17:47:08.650662  1 event.go:217] Event(v1.ObjectReference{Kind:\"ReplicaSet\", Namespace:\"default\", Name:\"fibonacci-1503002127\", UID:\"59ea64bb-38cd-11e7-b345-fa163edb1ca6\", APIVersion:\"extensions\", ResourceVersion:\"1304\", FieldPath:\"\"}): type: 'Normal' reason: 'SuccessfulCreate' Created pod: fibonacci-1503002127-3k755\n","stream":"stderr","time":"2017-05-14T17:47:08.650826398Z"} 
{"log":"E0514 17:49:00.873703  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:49:00.874034952Z"} 
{"log":"E0514 17:49:30.884078  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:49:30.884546461Z"} 
{"log":"E0514 17:50:00.896563  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:50:00.89688734Z"} 
{"log":"E0514 17:50:30.906293  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:50:30.906825794Z"} 
{"log":"E0514 17:51:00.915996  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:51:00.916348218Z"} 
{"log":"E0514 17:51:30.926043  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:51:30.926367623Z"} 
{"log":"E0514 17:52:00.936574  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:52:00.936903072Z"} 
{"log":"E0514 17:52:30.944724  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:52:30.945120508Z"} 
{"log":"E0514 17:53:00.954785  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:53:00.955126309Z"} 
{"log":"E0514 17:53:30.970454  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:53:30.972996568Z"} 
{"log":"E0514 17:54:00.980735  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:54:00.981098832Z"} 
{"log":"E0514 17:54:30.993176  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:54:30.993538841Z"} 
{"log":"E0514 17:55:01.002941  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:55:01.003265908Z"} 
{"log":"W0514 17:55:06.511756  1 reflector.go:323] k8s.io/kubernetes/pkg/controller/garbagecollector/graph_builder.go:192: watch of \u003cnil\u003e ended with: etcdserver: mvcc: required revision has been compacted\n","stream":"stderr","time":"2017-05-14T17:55:06.511957851Z"} 
{"log":"E0514 17:55:31.013415  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:55:31.013776243Z"} 
{"log":"E0514 17:56:01.024507  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:56:01.0248332Z"} 
{"log":"E0514 17:56:31.036191  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:56:31.036606698Z"} 
{"log":"E0514 17:57:01.049277  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:57:01.049616359Z"} 
{"log":"E0514 17:57:31.064104  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:57:31.064489485Z"} 
{"log":"E0514 17:58:01.073988  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:58:01.074339488Z"} 
{"log":"E0514 17:58:31.084511  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:58:31.084839352Z"} 
{"log":"E0514 17:59:01.096507  1 horizontal.go:201] failed to compute desired number of replicas based on listed metrics for Deployment/default/fibonacci: failed to get cpu utilization: unable to get metrics for resource cpu: failed to get pod resource metrics: the server could not find the requested resource (get services http:heapster:)\n","stream":"stderr","time":"2017-05-14T17:59:01.096896254Z"}

ありがとうございました！

出典

2017-05-14 Oghma

答えて

0

私はこれを他のアプリでも見てきました.HPA APIにバグがあるようです。

ソリューションではなく、複製コントローラscalerefを使用することができます。

apiVersion: autoscaling/v1 
kind: HorizontalPodAutoscaler 
metadata: 
    name: fibonacci 
    namespace: .... 
spec: 
    scaleRef: 
    kind: ReplicationController 
    name: fibonacci 
    subresource: scale 
    minReplicas: 1 
    maxReplicas: 3 
    targetCPUUtilizationPercentage: 50

テストされていないので、scaleRefにいくつかの編集が必要になる場合があります（あなたがscaleTargetRefを使用）

出典

2017-05-15 20:25:17

1

あなたの展開から制限を削除して試すことができますそれ。私の展開では、リソース用のREQUESTSのみを使用していました。 Horizo​​ntal Pod Autoscaler（HPA）が動作しているのを見たら、後でLIMITSでプレイすることもできます。 This discussionは、HPAを実行するのにREQUESTSを使用するだけで十分であることを伝えます。

出典

2017-06-27 22:08:47

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