centOS7.3 离线安装docker

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)

　下载：docker-18.06.3-ce.tar

二、安装步骤

　1）setup

cd /usr/local/resource/docker
tar -xzvf docker-18.06.3-ce.tar
mv  /usr/local/resource/docker/docker/*  /usr/bin/ # 将二进制文件移动到bin下

 　2）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
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