[kubernetes]-kubernetes1.14.0 开启kubectl top 命令

小咪咪 2023-03-02 14:57 3阅读 0赞

kubernetes1.14.0 开启kubectl top 命令

我这里是用的release-3.0的压缩包

链接: https://pan.baidu.com/s/1QjI5–6zi7uqGaz8pVDb8A 密码: l6ju

镜像下载地址 需要在node上执行docker load < metrics-server-amd64-v0.3.2.tar.gz 一下

链接: https://pan.baidu.com/s/17noqQi80OWz76pUx6DF28g 密码: 9g6f

直接下载文件并上传到kubernetes master的/opt下

unzip metrics-server-release-0.3.zip -d /opt/metrics-server
    cd /opt/metrics-server/metrics-server-release-0.3/deploy/1.8+/
    
    cat > metrics-server-deployment.yaml <<EOF
    ---
    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: mirrorgooglecontainers/metrics-server-amd64:v0.3.2
            imagePullPolicy: IfNotPresent
            args:
              - --cert-dir=/tmp
              - --secure-port=4443
              - --kubelet-insecure-tls  #避免x509: cannot validate certificate
              - --kubelet-preferred-address-types=InternalIP
            ports:
            - name: main-port
              containerPort: 4443
              protocol: TCP
            securityContext:
              readOnlyRootFilesystem: true
              runAsNonRoot: true
              runAsUser: 1000
            volumeMounts:
            - name: tmp-dir
              mountPath: /tmp
          nodeSelector:
            kubernetes.io/os: linux
    EOF
    
    # 相当于修改metrics-server-deployment.yaml 
    # 1 修改镜像
    # 2 在arg下添加了两行
    #          - --kubelet-insecure-tls  #避免x509: cannot validate certificate
    #          - --kubelet-preferred-address-types=InternalIP
    
    
    kubectl apply -f ./
    # 查看pod启动状态
    kubectl get pod -A -w

修改配置之后 重新aaply 之后命令就可以用了

![format_png][]

下面是我安装的时候遇到的坑。

未安装metrics-server的时候 会报错

![format_png 1][]

安装metrics-server 但是配置有问题会报错

![format_png 2][]

pod显示running但是还没ready 等待一会就好

![format_png 3][]

![format_png 4][]

[format_png]: /images/20230208/a5d14f3772d744b7a282fc40d1151333.png
[format_png 1]: /images/20230208/08be673627ae47e6b913c2ec76e7214d.png
[format_png 2]: /images/20230208/ac9e2b1edcec4895b4834e3f9de7dccd.png
[format_png 3]: /images/20230208/e4a5f8e207914e77b303733b8acdecbd.png
[format_png 4]: /images/20230208/a4fdba95f3144f0c847003e99215b0b8.png