Ubuntu 无法解析kubernetes.default或服务

我无法解析来自kubernetes的服务

kubectl get pods -l k8s-app=kube-dns --namespace kube-system
NAME                       READY   STATUS    RESTARTS   AGE   IP
coredns-86c58d9df4-gn62b   1/1     Running   0          18d   10.244.0.58
coredns-86c58d9df4-svmk5   1/1     Running   0          18d   10.244.0.59

容器不解析任何域，包括kubernetes.default

kubectl exec -ti busybox -- sh
/ # nslookup kubernetes.
defaultServer:    10.96.0.10
Address 1: 10.96.0.10

nslookup: can't resolve 'kubernetes.default'
command terminated with exit code 1

dns吊舱中的日志不显示任何查询（注意，coredns配置为记录查询）

托管在上的kube节点coredns正在运行ubuntu xenial

我应用了自定义kubelet配置，设置

--resolv conf=/run/systemd/resolv/resolv.conf

❯ systemctl status kubelet.service
● kubelet.service - kubelet: The Kubernetes Node Agent
   Loaded: loaded (/lib/systemd/system/kubelet.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/kubelet.service.d
           └─10-kubeadm.conf
   Active: active (running) since Wed 2019-02-06 01:05:42 GMT; 5min ago
     Docs: https://kubernetes.io/docs/home/
 Main PID: 27867 (kubelet)
    Tasks: 30 (limit: 4915)
   CGroup: /system.slice/kubelet.service
           └─27867 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --cgroup-drive --resolv-conf=/run/systemd/resolve/resolv.conf

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但是，我仍然无法解决任何服务

我删除了吊舱，他们的控制器重新安排了时间

现在dns查询和服务发现正在工作

我不确定coredns服务现在是否可以访问，因为我更新了

kubelet--resolve conf

，或者服务是否需要重新启动

❯ systemctl status kubelet.service
● kubelet.service - kubelet: The Kubernetes Node Agent
   Loaded: loaded (/lib/systemd/system/kubelet.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/kubelet.service.d
           └─10-kubeadm.conf
   Active: active (running) since Wed 2019-02-06 01:05:42 GMT; 5min ago
     Docs: https://kubernetes.io/docs/home/
 Main PID: 27867 (kubelet)
    Tasks: 30 (limit: 4915)
   CGroup: /system.slice/kubelet.service
           └─27867 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --cgroup-drive --resolv-conf=/run/systemd/resolve/resolv.conf