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。
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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: v1
kind: ServiceAccount
metadata:
name: metrics-server
namespace: kube-system
---
apiVersion: extensions/v1beta1
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:v0.3.1
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=InternalIP3 应用配置文件
kubectl apply -f .
4 查看pod
# kubectl get pod -n kube-system NAME READY STATUS RESTARTS AGE calico-node-j85f7 2/2 Running 2 3h7m calico-node-tbvs4 2/2 Running 2 3h4m calico-node-zwsts 2/2 Running 2 3h5m calico-typha-55968bfd7b-zv9vc 1/1 Running 1 3h7m coreDNS-fb8b8dccf-227fk 1/1 Running 0 54m coredns-fb8b8dccf-xwscm 1/1 Running 0 54m etcd-master 1/1 Running 1 3h21m kube-apiserver-master 1/1 Running 1 3h21m kube-controller-manager-master 1/1 Running 1 3h21m kube-proxy-ltwbd 1/1 Running 0 55m kube-proxy-qgrvg 1/1 Running 0 55m kube-proxy-xnd45 1/1 Running 0 55m kube-scheduler-master 1/1 Running 1 3h21m metrics-server-58db9f9647-sxtv9 1/1 Running 0 6m42s
5 使用
# kubectl top node NAME CPU(cores) CPU% MEMORY(bytes) MEMORY% master 189m 4% 911Mi 24% node1 98m 2% 432Mi 5% node2 117m 2% 442Mi 5% # kubectl top pods NAME CPU(cores) MEMORY(bytes) net-test-7d6d58cc8-8r28m 0m 1Mi net-test-7d6d58cc8-k5qdm 0m 1Mi # kubectl top pods -n kube-system NAME 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 api
kubectl 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，请关注创新互联行业资讯频道，感谢大家的支持。
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