运行"kubectl top nodes"时出现错误：
服务器错误(ServiceUnavailable(：服务器当前无法处理请求(get-nodes.metrics.k8s.io(
k8s version:
kubectl version
Client Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.1", GitCommit:"eec55b9ba98609a46fee712359c7b5b365bdd920", GitTreeState:"clean", BuildDate:"2018-12-13T10:39:04Z", GoVersion:"go1.11.2", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.1", GitCommit:"eec55b9ba98609a46fee712359c7b5b365bdd920", GitTreeState:"clean", BuildDate:"2018-12-13T10:31:33Z", GoVersion:"go1.11.2", Compiler:"gc", Platform:"linux/amd64"}
[root@manager ~]# kubectl api-versions
admissionregistration.k8s.io/v1beta1
apiextensions.k8s.io/v1beta1
apiregistration.k8s.io/v1
apiregistration.k8s.io/v1beta1
apps/v1
apps/v1beta1
apps/v1beta2
authentication.k8s.io/v1
authentication.k8s.io/v1beta1
authorization.k8s.io/v1
authorization.k8s.io/v1beta1
autoscaling/v1
autoscaling/v2beta1
autoscaling/v2beta2
batch/v1
batch/v1beta1
certificates.k8s.io/v1beta1
coordination.k8s.io/v1beta1
events.k8s.io/v1beta1
extensions/v1beta1
metrics.k8s.io/v1beta1
networking.k8s.io/v1
policy/v1beta1
rbac.authorization.k8s.io/v1
rbac.authorization.k8s.io/v1beta1
scheduling.k8s.io/v1beta1
storage.k8s.io/v1
storage.k8s.io/v1beta1
v1
[root@manager ~]# kubectl get po --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-86c58d9df4-km7jc 1/1 Running 0 2d21h
kube-system coredns-86c58d9df4-vltm9 1/1 Running 0 2d21h
kube-system etcd-manager 1/1 Running 0 2d23h
kube-system kube-apiserver-manager 1/1 Running 0 5h47m
kube-system kube-controller-manager-manager 1/1 Running 1 2d23h
kube-system kube-flannel-ds-amd64-5g8w8 1/1 Running 0 2d23h
kube-system kube-flannel-ds-amd64-69lcm 1/1 Running 0 2d23h
kube-system kube-flannel-ds-amd64-9hx2f 1/1 Running 0 2d23h
kube-system kube-proxy-9s6zm 1/1 Running 0 2d23h
kube-system kube-proxy-k4qwz 1/1 Running 0 2d23h
kube-system kube-proxy-wnzgd 1/1 Running 0 2d23h
kube-system kube-scheduler-manager 1/1 Running 1 2d23h
kube-system kubernetes-dashboard-79ff88449c-7fpw6 1/1 Running 0 2d23h
kube-system metrics-server-68d85f76bb-pj8bs 1/1 Running 0 111m
kube-system tiller-deploy-5478b6c547-bf82v 1/1 Running 0 4h7m
[root@manager ~]# kubectl logs -f -n kube-system metrics-server-68d85f76bb-pj8bs
I1217 06:42:43.451782 1 serving.go:273] Generated self-signed cert (apiserver.local.config/certificates/apiserver.crt, apiserver.local.config/certificates/apiserver.key)
[restful] 2018/12/17 06:42:44 log.go:33: [restful/swagger] listing is available at https://:443/swaggerapi
[restful] 2018/12/17 06:42:44 log.go:33: [restful/swagger] https://:443/swaggerui/ is mapped to folder /swagger-ui/
I1217 06:42:44.099720 1 serve.go:96] Serving securely on [::]:443
并且没有系统错误日志。我该如何解决这个问题？
操作系统为：CentOS Linux 7.5.1804版(核心(
我已经解决了这个问题，将hostNetwork: true添加到metries-server.yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
selector:
matchLabels:
k8s-app: metrics-server
strategy:
rollingUpdate:
maxUnavailable: 0
template:
metadata:
labels:
k8s-app: metrics-server
spec:
hostNetwork: true ## add
文档：
[root@xx yaml]# kubectl explain deployment.spec.template.spec.hostNetwork
KIND: Deployment
VERSION: apps/v1
FIELD: hostNetwork <boolean>
DESCRIPTION:
Host networking requested for this pod. Use the host's network namespace.
If this option is set, the ports that will be used must be specified.
Default to false.
背景：
成功运行metries，但kubectl top nodes隐藏：Error from server (ServiceUnavailable): the server is currently unable to handle the request (get nodes.metrics.k8s.io)。
此问题已解决：
- 删除代理(
file:/etc/kubernetes/manifests/kube-apiserver.yaml( - 重新启动kubelet服务
kubectl top nodes现在应该工作