kubenetes 1.4的Master节点克隆并改造为node节点以及node查询问题解决

背景信息

        Kubernetes 是在Vmare中的虚拟机中安装的，因此先安装了master节点，服务验证OK好，将master节点克隆一套，并将其改造为node节点，在join到master节点。

操作步骤：

1.    停止原有kube模块

   kubectl delete -f /etc/kubernetes/manifests
   systemctl stop kubelet;
   docker rm -f -v $(docker ps -q);
   find /var/lib/kubelet | xargs -n 1 findmnt -n -t tmpfs -o TARGET -T | uniq | xargs -r umount -v;
   rm -r -f /etc/kubernetes /var/lib/kubelet /var/lib/etcd;

   
   
2. 启动为Node节点

           

systemctl start kubelet
kubeadm join  

         3. join到master节点

 root@ubuntu:/etc/kubernetes# kubeadm join --token c54bcd.35a9ea8872b99b35 192.168.170.132
 validating provided token
 created cluster info discovery client, requesting info from "http://192.168.170.132:9898/cluster-info/v1/?token-id=c54bcd"
 cluster info object received, verifying signature using given token
 cluster info signature and contents are valid, will use API endpoints [https://192.168.170.132:443]
 created API client to obtain unique certificate for this node, generating keys and certificate signing request
 received signed certificate from the API server, generating kubelet configuration
 created "/etc/kubernetes/kubelet.conf"


Node join complete:
* Certificate signing request sent to master and response
  received.
* Kubelet informed of new secure connection details.


Run 'kubectl get nodes' on the master to see this machine join.

       4.在master节点通过kubectl get nodes查看却只能查询到master节点的node。

考虑了下，由于是克隆的，因此两个节点的主机名一样，可能会是这个问题，因此修改了node节点的主机名并重启了机器。

   

      5.在master节点重新查询nodes，可以得到全部信息，如下所示：

root@ubuntu:/etc/kubernetes/manifests# kubectl get nodes
NAME      STATUS    AGE
ubuntu    Ready     1d
ubuntu2   Ready     1h