添加node成功，但是在master运行kubectl get nodes 看不到子节点

来源：1-7 安装dashboard和heapster并验证集群安装结果

春松

2018-10-05

运行kubeadm join 命令后如下：
[preflight] Running pre-flight checks.
[WARNING FileExisting-crictl]: crictl not found in system path
Suggestion: go get github.com/kubernetes-incubator/cri-tools/cmd/crictl
[preflight] Starting the kubelet service
[discovery] Trying to connect to API Server “XXXX”
[discovery] Created cluster-info discovery client, requesting info from “https://XXXX:6443”
[discovery] Requesting info from “https://1XXXX:6443” again to validate TLS against the pinned public key
[discovery] Cluster info signature and contents are valid and TLS certificate validates against pinned roots, will use API Server “XXXX:6443”
[discovery] Successfully established connection with API Server “192.168.1.13:6443”

This node has joined the cluster:

Certificate signing request was sent to master and a response
was received.
The Kubelet was informed of the new secure connection details.

Run ‘kubectl get nodes’ on the master to see this node join the cluster.
在master上运行kubectl get nodes 后获取不到子节点且使用kubectl get pods -n kube-system -o wide获取的服务状态很多变成pending了。

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