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  • [k8s]Error from server (NotFound): the server could not find the requested resource (get services http:heapster:)

    查看容器资源报错

    kubectl top nodes

    kubectl top pods

    [root@master ~]# kubectl top nodes
    Error from server (NotFound): the server could not find the requested resource (get services http:heapster:)
    [root@master ~]# kubectl top pods
    Error from server (NotFound): the server could not find the requested resource (get services http:heapster:)
    

    需要安装 metrics server

    curl -O https://github.com/kubernetes-sigs/metrics-server/archive/v0.3.6.tar.gz

    [root@master ~]# tar zxvf metrics-server-0.3.6.tar.gz
    cd /root/metrics-server-0.3.6/deploy/1.8+
    

    修改配置文件

    vi metrics-server-deployment.yaml

    # 源文件
    ---
    apiVersion: v1
    kind: ServiceAccount
    metadata:
      name: metrics-server
      namespace: kube-system
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: metrics-server
      namespace: kube-system
      labels:
        k8s-app: metrics-server
    spec:
      selector:
        matchLabels:
          k8s-app: metrics-server
      template:
        metadata:
          name: metrics-server
          labels:
            k8s-app: metrics-server
        spec:
          serviceAccountName: metrics-server
          volumes:
          # mount in tmp so we can safely use from-scratch images and/or read-only containers
          - name: tmp-dir
            emptyDir: {}
          containers:
          - name: metrics-server
            image: k8s.gcr.io/metrics-server-amd64:v0.3.6
            imagePullPolicy: Always
            volumeMounts:
            - name: tmp-dir
              mountPath: /tmp
    

    # 修改后
    ---
    apiVersion: v1
    kind: ServiceAccount
    metadata:
      name: metrics-server
      namespace: kube-system
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: metrics-server
      namespace: kube-system
      labels:
        k8s-app: metrics-server
    spec:
      selector:
        matchLabels:
          k8s-app: metrics-server
      template:
        metadata:
          name: metrics-server
          labels:
            k8s-app: metrics-server
        spec:
          serviceAccountName: metrics-server
          volumes:
          # mount in tmp so we can safely use from-scratch images and/or read-only containers
          - name: tmp-dir
            emptyDir: {}
          containers:
          - name: metrics-server
           # 修改
            image: registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6
            imagePullPolicy: IfNotPresent
            ### 新增开始
            command:
            - /metrics-server
            - --kubelet-insecure-tls
            - --kubelet-preferred-address-types=InternalDNS,InternalIP,ExternalDNS,ExternalIP,Hostname
            ### 新增结束
            volumeMounts:
            - name: tmp-dir
              mountPath: /tmp
    

    拉取镜像

    docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6

    部署

    kubectl apply -f .

    [root@master 1.8+]# kubectl apply -f .
    clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
    clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
    rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
    apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created
    serviceaccount/metrics-server created
    deployment.apps/metrics-server created
    service/metrics-server created
    clusterrole.rbac.authorization.k8s.io/system:metrics-server created
    clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
    

    继续报错 error: metrics not available yet

    这个不是BUG 需要耐心等待一会

    [root@master 1.8+]# kubectl top nodes
    NAME      CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%
    master    140m         3%     3050Mi          38%
    worker1   83m          2%     2144Mi          27%
    worker2   66m          1%     2095Mi          26%
    [root@master 1.8+]# kubectl top pods -n kube-system
    NAME                                       CPU(cores)   MEMORY(bytes)
    calico-kube-controllers-5569bdd565-65m6j   1m           10Mi
    calico-node-dtz4t                          19m          28Mi
    calico-node-lfkwr                          21m          32Mi
    calico-node-stfz7                          21m          28Mi
    coredns-7ff77c879f-9gl2z                   2m           13Mi
    coredns-7ff77c879f-l9f27                   3m           12Mi
    etcd-master                                13m          278Mi
    kube-apiserver-master                      29m          413Mi
    kube-controller-manager-master             10m          47Mi
    kube-proxy-cmg67                           1m           12Mi
    kube-proxy-kc6jz                           1m           14Mi
    kube-proxy-whn2j                           1m           14Mi
    kube-scheduler-master                      4m           19Mi
    metrics-server-7c9f8b966f-chb4w            1m           11Mi
    

    END

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  • 原文地址:https://www.cnblogs.com/leoshi/p/13488942.html
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