Error: docker-ce conflicts with 2:docker-1.13.1-53.git774336d.el7.centos.x86_64

環境： Centos 7  Docker版本：docker-ce.x86_64 0:18.03.0.ce-1.el7.centos

運作指令：yum install -y kubernetes

錯誤：Error: docker-ce conflicts with 2:docker-1.13.1-53.git774336d.el7.centos.x86_64

錯誤原因：（https://stackoverflow.com/questions/44891775/kubernetes-installation-on-centos7）

According to the documentation, Kubernetes is not yet compatible with docker-ce (docker >=17.x)

On each of your machines, install Docker. Version 1.12 is recommended, but v1.10 and v1.11 are known to work as well. Versions 1.13 and 17.03+ have not yet been tested and verified by the Kubernetes node team.

解決方法：解除安裝docker-ce

1、檢視安裝過的docker：yum list installed | grep docker

2、解除安裝docker：yum remove -y docker-ce.x86_64 0:18.03.0.ce-1.el7.centos

3、删除容器鏡像：rm -rf /var/lib/docker

再次安裝kubernetes，安裝成功，而且會自動安裝docker