centos7.4 docker最新版本离线安装

1. 下载docker的安装文件

https://download.docker.com/linux/static/stable/x86_64/

注意本例下载最新版本

2.将下载包上传到服务器

3.解压下载包

tar -zxvf docker-20.10.8.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/
touch docker.service

6.打开docker.service文件,将以下内容复制

vi docker.service

添加以下内容：（注意： --insecure-registry=192.168.0.2 此处改为你自己服务器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=192.168.0.2
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.赋给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.启动及自启动设置

启动：

systemctl start docker

自启动：

systemctl enable docker.service

查询状态：

systemctl status docker