metrics-server的示例分析

今天就跟大家聊聊有关metrics-server的示例分析，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。

1 下载项目

git clone https://github.com/kubernetes-incubator/metrics-server.git

2 修改配置文件

cd /root/metrics-server/deploy/1.8+[root@master 1.8+]# vim metrics-server-deployment.yaml ---apiVersion: v1kind: ServiceAccountmetadata:  name: metrics-server  namespace: kube-system---apiVersion: extensions/v1beta1kind: Deploymentmetadata:  name: metrics-server  namespace: kube-system  labels:    k8s-app: metrics-serverspec:  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:v0.3.1        imagePullPolicy: Always        command:        - /metrics-server        - --kubelet-insecure-tls        - --kubelet-preferred-address-types=InternalIP        volumeMounts:        - name: tmp-dir          mountPath: /tmp增加配置        command:        - /metrics-server        - --kubelet-insecure-tls        - --kubelet-preferred-address-types=InternalIP

3 应用配置文件

 kubectl apply -f .

4 查看pod

# kubectl get pod -n kube-systemNAME                              READY   STATUS    RESTARTS   AGEcalico-node-j85f7                 2/2     Running   2          3h7mcalico-node-tbvs4                 2/2     Running   2          3h4mcalico-node-zwsts                 2/2     Running   2          3h5mcalico-typha-55968bfd7b-zv9vc     1/1     Running   1          3h7mcoredns-fb8b8dccf-227fk           1/1     Running   0          54mcoredns-fb8b8dccf-xwscm           1/1     Running   0          54metcd-master                       1/1     Running   1          3h21mkube-apiserver-master             1/1     Running   1          3h21mkube-controller-manager-master    1/1     Running   1          3h21mkube-proxy-ltwbd                  1/1     Running   0          55mkube-proxy-qgrvg                  1/1     Running   0          55mkube-proxy-xnd45                  1/1     Running   0          55mkube-scheduler-master             1/1     Running   1          3h21mmetrics-server-58db9f9647-sxtv9   1/1     Running   0          6m42s

5 使用

# kubectl top nodeNAME     CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   master   189m         4%     911Mi           24%       node1    98m          2%     432Mi           5%        node2    117m         2%     442Mi           5%        # kubectl top podsNAME                       CPU(cores)   MEMORY(bytes)   net-test-7d6d58cc8-8r28m   0m           1Mi             net-test-7d6d58cc8-k5qdm   0m           1Mi             # kubectl top pods -n kube-systemNAME                              CPU(cores)   MEMORY(bytes)   calico-node-j85f7                 29m          59Mi            calico-node-tbvs4                 25m          61Mi            calico-node-zwsts                 27m          60Mi            calico-typha-55968bfd7b-zv9vc     9m           29Mi            coredns-fb8b8dccf-227fk           4m           13Mi            coredns-fb8b8dccf-xwscm           4m           13Mi            etcd-master                       25m          69Mi            kube-apiserver-master             34m          270Mi           kube-controller-manager-master    16m          57Mi            kube-proxy-ltwbd                  1m           17Mi            kube-proxy-qgrvg                  1m           17Mi            kube-proxy-xnd45                  1m           18Mi            kube-scheduler-master             2m           15Mi            metrics-server-58db9f9647-sxtv9   2m           14Mi

6 查看Metrics API数据

启动一个代理以便curl apikubectl proxy --port=8080#直接查看接口数据：#可获取的资源：nodes和pods# curl localhost:8080/apis/metrics.k8s.io/v1beta1 curl localhost:8080/apis/metrics.k8s.io/v1beta1/{  "kind": "APIResourceList",  "apiVersion": "v1",  "groupVersion": "metrics.k8s.io/v1beta1",  "resources": [    {      "name": "nodes",      "singularName": "",      "namespaced": false,      "kind": "NodeMetrics",      "verbs": [        "get",        "list"      ]    },    {      "name": "pods",      "singularName": "",      "namespaced": true,      "kind": "PodMetrics",      "verbs": [        "get",        "list"      ]    }  ]}

看完上述内容，你们对metrics-server的示例分析有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注行业资讯频道，感谢大家的支持。