1, CentOS7 installation Docker, system requirements CentOS kernel version higher than 3.10, core edition:
[root@all~]# uname -r
2, yum update package
[root@all ~]# yum -y update
3, uninstall the old version docker
[root@all ~]# yum remove docker docker-common docker-selinux docker-engine
4, install the necessary number of system tools
# Yum-utils provides configuration management of yum
# Devicemapper-persistent-data storage drive and lvm2 is required devicemapper
[root@all ~]# yum install -y yum-utils device-mapper-persistent-data lvm2
5, configuration Docker stable release warehouse
[root@all ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
6. Update Package Index
[root@all ~]# yum makecache fast
7, the installation Docker CE
[root@all ~]# yum -y install docker-ce
8, open Docker service
[root@all ~]# service docker start
9, see the Docker CE installation was successful
[root@all ~]# docker version
