使用yum安装

sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'

[dockerrepo]

name=Docker Repository

baseurl=https://yum.dockerproject.org/repo/main/centos/7/

enabled=1

gpgcheck=1

gpgkey=https://yum.dockerproject.org/gpg

EOF

Install the Docker package.

$ sudo yum install docker-engine

Start the Docker daemon.

$ sudo service docker start

使用脚本安装

sudo yum update

Run the Docker installation script.

$ curl -fsSL https://get.docker.com/ | sh

This script adds the docker.repo repository and installs Docker.

Start the Docker daemon.

$ sudo service docker start

配置文件修改/etc/systemd/system/docker.service.d/docker.conf：

ExecStart=/usr/bin/docker daemon -H fd:// -D -s overlay --insecure-registry docker.16qian.cn -H 10.10.16.194:2375 -H unix:///var/run/docker.sock

卸载

yum list installed | grep docker

yum list installed | grep docker

docker-engine.x86_64   1.7.1-1.el7 @/docker-engine-1.7.1-1.el7.x86_64.rpm

Remove the package.

$ sudo yum -y remove docker-engine.x86_64

This command does not remove images, containers, volumes, or user-created configuration files on your host.

To delete all images, containers, and volumes, run the following command:

$ rm -rf /var/lib/docker

Locate and delete any user-created configuration files.