k8s部署metrics-server资源统计模块（kubectl top）

以你之姓@ 2022-10-06 09:55 130阅读 0赞

## 安装K8S ##

参见[centos安装kubernetes][centos_kubernetes]，早期的这篇博客，没有部署统计模块，在这里补充。

## 拉取`metrics-server`镜像 ##

由于`google`的镜像仓库需要翻墙，拉取速度才会变快，因此这里使用阿里的镜像。

docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6
    docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6 k8s.gcr.io/metrics-server-amd64:v0.3.6
    docker rmi registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6

## 部署`metrics-server` ##

1.  下载`metrics-server`的`yaml`文件，`https://github.com/kubernetes-sigs/metrics-server/archive/v0.3.6.tar.gz`
2.  `tar zxvf metrics-server-0.3.6.tar.gz`
3.  `cd /root/metrics-server-0.3.6/deploy/1.8+`
4.  `vi metrics-server-deployment.yaml`
    
        ---
        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:
              - name: tmp-dir
                emptyDir: { }
              containers:
              - name: metrics-server
                image: k8s.gcr.io/metrics-server-amd64:v0.3.6
                # 修改开始
                imagePullPolicy: IfNotPresent
                command:
                - /metrics-server
                - --kubelet-insecure-tls
                - --kubelet-preferred-address-types=InternalDNS,InternalIP,ExternalDNS,ExternalIP,Hostname
                # 修改结束
                volumeMounts:
                - name: tmp-dir
                  mountPath: /tmp
5.  `kubectl apply -f .`

[centos_kubernetes]: https://blog.csdn.net/qq_30038111/article/details/112644592