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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,丸趣 TV 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+
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
- --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-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,请关注丸趣 TV 行业资讯频道,感谢大家的支持。
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