k8s主节点ip变更了，从192.168.101.1变为了192.168.201.1。记录这次不成功的修改，最后还是重新初始化了，因为pod的ip还是没有变

1、现象执行命令报错
kubectl get nodes

Unable to connect to the server: dial tcp 192.168.101.1:6443: i/o timeout

2、修改/etc/kubernetes下的配置文件，除pki目录以外，所有文件都要改IP地址
/etc/kubernetes/admin.conf
/etc/kubernetes/controller-manager.conf
/etc/kubernetes/kubelet.conf
/etc/kubernetes/scheduler.conf
/etc/kubernetes/manifests/etcd.yaml
/etc/kubernetes/manifests/kube-apiserver.yaml
/etc/kubernetes/manifests/kube-controller-manager.yaml
/etc/kubernetes/manifests/kube-scheduler.yaml
命令
cd /etc/kubernetes/
sed -i 's/192.168.101.1/192.168.201.1/g' ./.*conf
cd /etc/kubernetes/manifests/
sed -i 's/192.168.101.1/192.168.201.1/g' ./*.yaml