使用Cloud Shell访问GCP中的私有Kubernetes集群

Question

以下链接https://cloud.google.com/kubernetes-engine/docs/how-to/private-clusters讨论了如何在单独的自定义VPC中设置私有GKE集群。可从https://github.com/rajtmana/gcp-terraform/blob/master/k8s-cluster/main.tf获得用于创建集群和VPC的Terraform代码。集群创建已经完成，我想使用Google Cloud Shell。我使用了以下命令

$ gcloud container clusters get-credentials mservice-dev-cluster --region europe-west2
$ gcloud container clusters update mservice-dev-cluster \
>     --region europe-west2 \
>     --enable-master-authorized-networks \
>     --master-authorized-networks "35.241.216.229/32"
Updating mservice-dev-cluster...done.
ERROR: (gcloud.container.clusters.update) Operation [<Operation
clusterConditions: []
detail: u'Patch failed'

$ gcloud container clusters update mservice-dev-cluster \
>     --region europe-west2 \
>     --enable-master-authorized-networks \
>     --master-authorized-networks "172.17.0.2/32"
Updating mservice-dev-cluster...done.
Updated [https://container.googleapis.com/v1/projects/protean- 
XXXX/zones/europe-west2/clusters/mservice-dev-cluster].
To inspect the contents of your cluster, go to: 
https://console.cloud.google.com/kubernetes/workload_/gcloud/europe- 
west2/mservice-dev-cluster?project=protean-XXXX

$ kubectl config current-context
gke_protean-XXXX_europe-west2_mservice-dev-cluster

$ kubectl get services
Unable to connect to the server: dial tcp 172.16.0.2:443: i/o timeout

当我提供Cloud Shell的公共IP时，它表示不允许公共IP，并带有上面给出的错误消息。如果我提供以172开头的Cloud Shell的内部IP，则连接也将超时。有什么想法吗？感谢帮助。

Answer 1

尝试执行以下操作

gcloud container clusters get-credentials [CLUSTER_NAME]

并确认 kubectl 使用正确的凭据：

gcloud auth application-default login