在kubernetes：部署仪表板（ui）时出错

Question

我已使用kops和以下命令在AWS上成功设置了kubernetes集群：

$ kops create cluster --name=<my_cluster_name> --state=s3://<my-state-bucket> --zones=eu-west-1a --node-count=2 --node-size=t2.micro --master-size=t2.small --dns-zone=<my-cluster-dns>

$ kops update cluster <my-cluster-name> --yes

群集有1个主服务器和2个从服务器。

我正在尝试使用以下命令部署仪表板，如these guidelines所示：

$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml

1.

我收到以下错误：

secret "kubernetes-dashboard-certs" created
serviceaccount "kubernetes-dashboard" created
error: error validating "https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml": error validating data: unknown object type schema.GroupVersionKind{Group:"rbac.authorization.k8s.io", Version:"v1", Kind:"Role"}; if you choose to ignore these errors, turn validation off with --validate=false

2.

我的仪表板无法通过https://<my_master_node_public_ip>/ui访问

相反，我得到以下内容：

kind    "Status"
apiVersion  "v1"
metadata    {}
status  "Failure"
message "endpoints \"kubernetes-dashboard\" not found"
reason  "NotFound"
details 
name    "kubernetes-dashboard"
kind    "endpoints"
code    404

3.

跑完之后

kubectl proxy

并尝试通过以下方式访问仪表板：

http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/

按照相关指南的指示，我有完全相同的问题。

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.1", GitCommit:"f38e43b221d08850172a9a4ea785a86a3ffa3b3a", GitTreeState:"clean", BuildDate:"2017-10-11T23:27:35Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"7", GitVersion:"v1.7.11", GitCommit:"b13f2fd682d56eab7a6a2b5a1cab1a3d2c8bdd55", GitTreeState:"clean", BuildDate:"2017-11-25T17:51:39Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}

编辑：这是关闭验证错误时的结果：

$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml --validate=false
secret "kubernetes-dashboard-certs" configured
serviceaccount "kubernetes-dashboard" configured
service "kubernetes-dashboard" created
Error from server (BadRequest): error when creating "https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml": Role in version "v1" cannot be handled as a Role: no kind "Role" is registered for version "rbac.authorization.k8s.io/v1"
Error from server (BadRequest): error when creating "https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml": RoleBinding in version "v1" cannot be handled as a RoleBinding: no kind "RoleBinding" is registered for version "rbac.authorization.k8s.io/v1"
Error from server (BadRequest): error when creating "https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml": Deployment in version "v1beta2" cannot be handled as a Deployment: no kind "Deployment" is registered for version "apps/v1beta2"

Answer 1

问题是您正在使用kops配置Kubernetes 1.7集群并为Kubernetes 1.8使用dashboard manifest文件，因此请尝试以下操作（首先核实当前部署），然后：

$ kops create cluster --kubernetes-version="1.8.1" --name=<my_cluster_name> --state=s3://<my-state-bucket> --zones=eu-west-1a --node-count=2 --node-size=t2.micro --master-size=t2.small --dns-zone=<my-cluster-dns>

正如pkaramol指出的，除了上面你可以将kops升级到1.8，它也应该工作。

请注意，在任何情况下，为了进入仪表板，请执行以下操作：

$ kubectl proxy

......然后可以通过http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/访问仪表板