1.CentOS
服务器的系统是CentOS7.4的
[root@VM_82_178_centos ~]# cat /etc/RedHat-release
CentOS Linux release 7.4.1708 (Core)
#安装依赖包
yum install -y yum-utils device-mapper-persistent-data lvm2
#添加Docker软件包源
yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
#安装Docker CE
yum install docker-ce -y
#启动
systemctl start docker
#开机启动
systemctl enable docker
#查看Docker信息
docker info
2.Ubuntu 上安装
apt-get update
安装证书：
apt-get install \
apt-transport-https \
ca-certificates \
curl \
software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
添加docker源的key：
sudo apt-key fingerprint 0EBFCD88
pub 4096R/0EBFCD88 2017-02-22
Key fingerprint = 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88
uid Docker Release (CE deb)
sub 4096R/F273FCD8 2017-02-22
添加docker软件包源：
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"
跟新apt包索引：
sudo apt-get update
安装docker ce
apt-get install docker-ce
3.配置Docker加速器
Docker Hub 提供众多镜像，你可以从中自由下载数十万计的免费应用镜像， 这些镜像作为 docker 生态圈的基石，是我们使用和学习 docker 不可或缺的资源。为了解决国内用户使用 Docker Hub 时遇到的稳定性及速度问题 DaoCloud 推出永久免费的新一代加速器服务。
Linux：
curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://bc437cce.m.daocloud.io
[root@localhost ~]# curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://bc437cce.m.daocloud.io
docker version >= 1.12
{"registry-mirrors": ["http://bc437cce.m.daocloud.io"]}
Success.
You need to restart docker to take effect: sudo systemctl restart docker
[root@localhost ~]#
[root@localhost ~]# systemctl restart docker
[root@localhost ~]# systemctl stop docker
[root@localhost ~]# ps -ef|grep docker
root 15185 3300 0 01:39 pts/1 00:00:00 grep --color=auto docker
[root@localhost ~]# systemctl start docker
[root@localhost ~]# ps -ef|grep docker
root 15191 1 2 01:39 ? 00:00:00 /usr/bin/dockerd
root 15198 15191 0 01:39 ? 00:00:00 docker-containerd --config /var/run/docker/containerd/containerd.toml
root 15325 3300 0 01:39 pts/1 00:00:00 grep --color=auto docker
[root@localhost ~]#