K8S部署Metrics-Server

1）下载manifest的YAML

wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/high-availability-1.21+.yaml

2) 编辑

需要在添加- –kubelet-insecure-tls

      containers:
      - args:
        - --kubelet-insecure-tls #新添加
        - --cert-dir=/tmp
        - --secure-port=10250
        - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
        - --kubelet-use-node-status-port
        - --metric-resolution=15s

3）创建

[root@master100 ~]# kubectl apply -f high-availability-1.21+.yaml

[root@master100 ~]# kubectl logs -n kube-system metrics-server-86cc658b69-kll57 -f
I0612 15:19:55.179672       1 serving.go:374] Generated self-signed cert (/tmp/apiserver.crt, /tmp/apiserver.key)
I0612 15:19:55.845820       1 handler.go:275] Adding GroupVersion metrics.k8s.io v1beta1 to ResourceManager
I0612 15:19:55.958224       1 secure_serving.go:213] Serving securely on [::]:10250
I0612 15:19:55.958452       1 requestheader_controller.go:169] Starting RequestHeaderAuthRequestController
I0612 15:19:55.958478       1 shared_informer.go:311] Waiting for caches to sync for RequestHeaderAuthRequestController
I0612 15:19:55.958669       1 dynamic_serving_content.go:132] "Starting controller" name="serving-cert::/tmp/apiserver.crt::/tmp/apiserver.key"
I0612 15:19:55.959138       1 tlsconfig.go:240] "Starting DynamicServingCertificateController"
I0612 15:19:55.959354       1 configmap_cafile_content.go:202] "Starting controller" name="client-ca::kube-system::extension-apiserver-authentication::client-ca-file"
I0612 15:19:55.959470       1 shared_informer.go:311] Waiting for caches to sync for client-ca::kube-system::extension-apiserver-authentication::client-ca-file
I0612 15:19:55.959503       1 configmap_cafile_content.go:202] "Starting controller" name="client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"
I0612 15:19:55.959510       1 shared_informer.go:311] Waiting for caches to sync for client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file
I0612 15:19:56.059987       1 shared_informer.go:318] Caches are synced for client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file
I0612 15:19:56.060087       1 shared_informer.go:318] Caches are synced for client-ca::kube-system::extension-apiserver-authentication::client-ca-file
I0612 15:19:56.060241       1 shared_informer.go:318] Caches are synced for RequestHeaderAuthRequestController

4) 查看

[root@master100 ~]# kubectl top nodes
NAME        CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   
master100   204m         10%    2242Mi          28%       
worker102   76m          3%     1414Mi          18%       
worker103   79m          3%     1052Mi          13%       
[root@master100 ~]#