一、部署Metrics Server
### --- metrics server概述
~~~ 在新版的Kubernetes中系统资源的采集均使用Metrics-server，
~~~ 可以通过Metrics采集节点和Pod的内存、磁盘、CPU和网络的使用率。### --- 部署metrics server
~~~ 切换到metrics-server安装目录下
[root@k8s-master01 ~]# cd /root/k8s-ha-install/metrics-server-0.4.x/### --- 部署metrics-server
[root@k8s-master01 metrics-server-0.4.x]# kubectl create -f .
~~~ 注：输出结果
serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created
二、查看服务状态
### --- 等待metrics server启动然后查看状态
~~~ 查看metrics-server.pod状态
[root@k8s-master01 metrics-server-0.4.x]# kubectl get po -n kube-system
NAME READY STATUS RESTARTS AGE
metrics-server-595f65d8d5-l6f7k 1/1 Running 0 69s### --- 查看metrics-server监控到pod资源的状态
~~~ 查看metrics监控状态
[root@k8s-master01 metrics-server-0.4.x]# kubectl top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
k8s-master01 246m 12% 1622Mi 42%
k8s-node01 171m 8% 712Mi 18%
k8s-node02 277m 13% 657Mi 22%