解决思路：
1.在Google Cloud中获取K8s镜像，同步至Hub仓库（该步骤我已经完成，你们只需要从我Hub仓库获取即可）;
2.获取Hub仓库中的K8s镜像；
3.使用命令docker tag修改镜像标签；
PS：目前只支持v1.15.0版本，后续版本我将整理放入Hub仓库，敬请关注；

Hub仓库网址

kube-apiserver:v1.15.0
https://hub.docker.com/r/kry1702/kube-apiserver

kube-controller-manager:v1.15.0
https://hub.docker.com/r/kry1702/kube-controller-manager

kube-scheduler:v1.15.0
https://hub.docker.com/r/kry1702/kube-scheduler

kube-proxy:v1.15.0
https://hub.docker.com/r/kry1702/kube-proxy

pause:3.1
https://hub.docker.com/r/kry1702/pause

etcd:3.3.10
https://hub.docker.com/r/kry1702/etcd

coredns:1.3.1
https://hub.docker.com/r/kry1702/coredns

拉取方式

docker pull kry1702/kube-apiserver:v1.15.0
docker pull kry1702/kube-controller-manager:v1.15.0
docker pull kry1702/kube-scheduler:v1.15.0
docker pull kry1702/kube-proxy:v1.15.0
docker pull kry1702/pause:3.1
docker pull kry1702/etcd:3.3.10
docker pull kry1702/coredns:1.3.1

还原操作

docker tag kry1702/kube-apiserver:v1.15.0 k8s.gcr.io/kube-apiserver:v1.15.0
docker tag kry1702/kube-controller-manager:v1.15.0 k8s.gcr.io/kube-controller-manager:v1.15.0  
docker tag kry1702/kube-scheduler:v1.15.0 k8s.gcr.io/kube-scheduler:v1.15.0  
docker tag kry1702/kube-proxy:v1.15.0 k8s.gcr.io/kube-proxy:v1.15.0  
docker tag kry1702/pause:3.1 k8s.gcr.io/pause:3.1 
docker tag kry1702/etcd:3.3.10 k8s.gcr.io/etcd:3.3.10 
docker tag kry1702/coredns:1.3.1 k8s.gcr.io/coredns:1.3.1