kube-dns 容器因 "Failed to create a kubernetes client: open /var/run/secrets/kubernetes.io/serviceaccount/token: permission denied" 而崩溃

Question

在来自快速通道的版本为 1.16.6-gke.12 的 GKE 集群中，kube-dns 服务的 kube-dns-... pods 的 kubedns 容器失败永久归因于

kubedns     15 Mar 2020, 21:43:54   F0315 20:43:54.029575 1 server.go:61] Failed to create a kubernetes client: open /var/run/secrets/kubernetes.io/serviceaccount/token: permission denied
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029539 1 dns.go:48] version: 1.15.8
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029524 1 flags.go:52] FLAG: --vmodule=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029517 1 flags.go:52] FLAG: --version="false"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029512 1 flags.go:52] FLAG: --v="2"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029506 1 flags.go:52] FLAG: --stderrthreshold="2"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029500 1 flags.go:52] FLAG: --profiling="false"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029495 1 flags.go:52] FLAG: --nameservers=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029490 1 flags.go:52] FLAG: --logtostderr="true"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029485 1 flags.go:52] FLAG: --log-flush-frequency="5s"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029479 1 flags.go:52] FLAG: --log-dir=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029466 1 flags.go:52] FLAG: --log-backtrace-at=":0"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029460 1 flags.go:52] FLAG: --kubecfg-file=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029439 1 flags.go:52] FLAG: --kube-master-url=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029432 1 flags.go:52] FLAG: --initial-sync-timeout="1m0s"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029426 1 flags.go:52] FLAG: --healthz-port="8081"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029419 1 flags.go:52] FLAG: --federations=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029412 1 flags.go:52] FLAG: --domain="cluster.local."
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029404 1 flags.go:52] FLAG: --dns-port="10053"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029398 1 flags.go:52] FLAG: --dns-bind-address="0.0.0.0"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029390 1 flags.go:52] FLAG: --config-period="10s"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029382 1 flags.go:52] FLAG: --config-map-namespace="kube-system"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029373 1 flags.go:52] FLAG: --config-map=""
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029363 1 flags.go:52] FLAG: --config-dir="/kube-dns-config"
kubedns     15 Mar 2020, 21:43:54   I0315 20:43:54.029288 1 flags.go:52] FLAG: --alsologtostderr="false"

是否有解决方法。我应该在哪里举报？

版本信息：

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.3", GitCommit:"06ad960bfd03b39c8310aaf92d1e7c12ce618213", GitTreeState:"clean", BuildDate:"2020-02-11T18:14:22Z", GoVersion:"go1.13.6", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"16+", GitVersion:"v1.16.6-gke.12", GitCommit:"74e2d6182ba7947983ec6d59776c38c53b086a37", GitTreeState:"clean", BuildDate:"2020-02-27T18:38:03Z", GoVersion:"go1.13.4b4", Compiler:"gc", Platform:"linux/amd64"}

Answer 1

新的 GKE 集群现在默认使用 Kubernetes 版本 1.14。 GKE 现在提供 Kubernetes 1.17 预览版，需要从 Google Cloud 请求访问权限才能使用。类似地，如果将发布使用 Kubernetes 1.18 的 GKE - 这解决了服务帐户的问题（kubernetes。io/docs/setup/release/notes - “修复了集群中的服务帐户令牌准入错误不是运行服务帐户令牌控制器 - admission) - 此 GKE 版本将同时解决您的问题。

参见：kubernetes-1.18, new-kubernetes-release。

kube-dns 容器因 "Failed to create a kubernetes client: open /var/run/secrets/kubernetes.io/serviceaccount/token: permission denied" 而崩溃

kube-dns container crashes due to "Failed to create a kubernetes client: open /var/run/secrets/kubernetes.io/serviceaccount/token: permission denied"

dns

kubernetes

google-kubernetes-engine

kubernetes-1.16