1、下载docker的安装文件
https://download.docker.com/linux/static/stable/x86_64/
由于公司OpenStack用的docker版本是18.09.0
所以，下载的是：docker-18.09.0-ce.tgz 这个压缩文件
2、上传docker-18.09.0-ce.tgz 到系统，用ftp工具上传即可
3、解压
tar -zxvf docker-18.06.3-ce.tgz
4、将解压出来的docker文件复制到 /usr/bin/ 目录下
cp docker/* /usr/bin/
5、进入/etc/systemd/system/目录,并创建docker.service文件
cd /etc/systemd/system/
vi docker.service
6、将以下内容复制进去（192.168.100.108改为你的服务器IP）
[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com
After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify # the default is not to use systemd for cgroups because the delegate issues still # exists and systemd currently does not support the cgroup feature set required # for containers run by docker ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=192.168.100.108 ExecReload=/bin/kill -s HUP $MAINPID # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity # Uncomment TasksMax if your systemd version supports it. # Only systemd 226 and above support this version. #TasksMax=infinity TimeoutStartSec=0 # set delegate yes so that systemd does not reset the cgroups of docker containers Delegate=yes # kill only the docker process, not all processes in the cgroup KillMode=process # restart the docker process if it exits prematurely Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target
7、给docker.service文件添加执行权限
chmod 777 /etc/systemd/system/docker.service
8、重新加载配置文件（每次有修改docker.service文件时都要重新加载下）
systemctl daemon-reload
9、启动
systemctl start docker
10、设置开机启动
systemctl enable docker.service
11、查看docker状态
systemctl status docker
出现下面这个界面就代表docker安装成功：
12、配置镜像加速器,默认是到国外拉取镜像速度慢,可以配置国内的镜像如：阿里、网易等等。
下面配置一下网易的镜像加速器。打开docker的配置文件: /etc/docker/daemon.json文件：
vi /etc/docker/daemon.json
配置如下:
{"registry-mirrors": ["http://hub-mirror.c.163.com"]}
13、保存配置并重启docker 一定要重启不然加速是不会生效的！！！
service docker restart
14、测试docker导入安装镜像
h1_01_import_images.sh
导入镜像
查看镜像
运行容器并进入
OK，到此没有问题，无网环境安装docker成功！！