一、环境
因某些环境，不能联外网，所以使用docker yum源方法行不通，于是打算离线安装
环境：contos7.3(内核需为3.10+)
cat /etc/redhat-release
# CentOS Linux release 7.3.1611 (Core)二、安装步骤
1、卸载旧docker
a、停止正在运行的容器
docker stop $(docker ps -a -q)b、删除所有的容器
docker rm $(docker ps -a -q)c、删除所有的镜像
docker rmi $(docker images -q)d、先查询下docker
yum list installed| grep dockere、执行卸载命令
yum -y remove docker.x86_64 docker-client.x86_64 docker-common.x86_64 nvidia-docker.x86_64
f、执行删除已存在的镜像和容器（以实际情况而定）
rm -rf /var/lib/docker2、离线重装docker
a、docker压缩包
cd /usr/local/resource/docker
tar -xzvf docker-18.06.3-ce.tgz
mv /usr/local/resource/docker/docker/* /usr/bin/ # 将二进制文件移动到bin下b、systemd docker.service
vim /etc/systemd/system/docker.service然后将以下内容粘贴进去：
[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 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock --add-runtime=nvidia=/usr/bin/nvidia-container-runtime
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target授予执行权限：
chmod +x /etc/systemd/system/docker.service然后：
systemctl daemon-reload # 重载systemd下 xxx.service文件
systemctl start docker # 启动Docker
systemctl enable docker.service # 设置开机自启测试是否成功：
systemctl status docker # 查看Docker状态
docker -v # 查看Docker版本3、离线安装nvidia-docker
前提，已经安装了docker
a、在一台联网的机器上执行下面命令
distribution=$(. /etc/os-release;echo $ID$VERSION_ID)
curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.repo | sudo tee /etc/yum.repos.d/nvidia-docker.repo
yum install --downloadonly nvidia-docker2 --downloaddir=/tmp/nvidia会得到这些 ：
b、将以上安装包上传到无法联网的服务器
c、进入rpm包路径里执行
rpm -Uvh *.rpm --nodeps --force解决
docker: Error response from daemon: Unknown runtime specified nvidia. 解决方法
参考地址：https://blog.csdn.net/weixin_32820767/article/details/80538510