kubernetes 指标服务器不启动

Question

我尝试在 kubernetes 的仪表板中连接。

我在服务器中安装了带有 kubeadm 的最新版本的 kubernetes v1.12。

我从 github 下载 metrics-server 并运行:

Kubctl create -f deploy/1.8+

但是我得到这个错误

kube-system metrics-server-5cbbc84f8c-tjfxd 0/1 Pending 0 12m

没有调试日志

error: the server doesn't have a resource type "logs"

我不想安装 heapster，因为它已被弃用。

更新

您好，谢谢。

我运行得到的污点命令:

error: at least one taint update is required

和命令

kubectl describe deployment metrics-server -n kube-system

我得到这个输出:

Name:                   metrics-server
Namespace:              kube-system
CreationTimestamp:      Thu, 18 Oct 2018 14:34:42 +0000
Labels:                 k8s-app=metrics-server
Annotations:            deployment.kubernetes.io/revision: 1
 kubectl.kubernetes.io/last-applied-configuration:     {"apiVersion":"extensions/v1beta1","kind":"Deployment","metadata":    {"annotations":{},"labels":{"k8s-app":"metrics-server"},"name":"metrics-...
 Selector:               k8s-app=metrics-server
 Replicas:               1 desired | 1 updated | 1 total | 0 available | 1      unavailable
 StrategyType:           RollingUpdate
 MinReadySeconds:        0
 RollingUpdateStrategy:  1 max unavailable, 1 max surge
 Pod Template:
   Labels:           k8s-app=metrics-server
   Service Account:  metrics-server
   Containers:
    metrics-server:
Image:        k8s.gcr.io/metrics-server-amd64:v0.3.1
Port:         <none>
Host Port:    <none>
Environment:  <none>
Mounts:
  /tmp from tmp-dir (rw)
Volumes:
tmp-dir:
Type:    EmptyDir (a temporary directory that shares a pod's lifetime)
Medium:  
 Conditions:
   Type           Status  Reason
   ----           ------  ------
   Available      True    MinimumReplicasAvailable
 OldReplicaSets:  <none>
 NewReplicaSet:   metrics-server-5cbbc84f8c (1/1 replicas created)
 Events:          <none>

命令:

kubectl get nodes

此输出只是节点的 IP，没有什么特别的。

任何想法，或如何操作 kubernetes 的仪表板。

Answer 1

我想您正在尝试在您的主节点上设置 metrics-server。

如果你发出 kubectl describe deployment metrics-server -n kube-system 我相信你会看到这样的东西:

Name: metrics-server Namespace:
kube-system CreationTimestamp: Thu, 18 Oct 2018 15:57:34 +0000 Labels: k8s-app=metrics-server Annotations:
deployment.kubernetes.io/revision: 1 Selector:
k8s-app=metrics-server Replicas: 1 desired | 1 updated | 1 total | 0 available | 1 unavailable

但是如果你描述你的节点，你会看到阻止你在主节点上调度新 pod 的污点:

kubectl get nodes

NAME            STATUS   ROLES    AGE   VERSION
kube-master-1   Ready    master   17m   v1.12.1

kubectl describe node kube-master-1

Name:               kube-master-1
...
Taints:             node-role.kubernetes.io/master:NoSchedule

你必须移除这个污点:

kubectl taint node kube-master-1 node-role.kubernetes.io/master:NoSchedule-
node/kube-master-1 untainted

结果:

 kubectl get pods --all-namespaces

NAMESPACE     NAME                                    READY   STATUS    RESTARTS   AGE
kube-system   calico-node-xvc77                       2/2     Running   0          20m
kube-system   coredns-576cbf47c7-rj4wh                1/1     Running   0          21m
kube-system   coredns-576cbf47c7-vsjsf                1/1     Running   0          21m
kube-system   etcd-kube-master-1                      1/1     Running   0          20m
kube-system   kube-apiserver-kube-master-1            1/1     Running   0          20m
kube-system   kube-controller-manager-kube-master-1   1/1     Running   0          20m
kube-system   kube-proxy-xp5zh                        1/1     Running   0          21m
kube-system   kube-scheduler-kube-master-1            1/1     Running   0          20m
kube-system   metrics-server-5cbbc84f8c-l2t76         1/1     Running   0          18m

但这不是最好的方法。好的方法是加入 worker 并在那里设置 metrics-server。不会有任何问题，也不需要在主节点上接触污点。

希望对你有所帮助。