Linux离线安装Docker

一、基础环境

系统：CentOS7.2

docker版本：19.03.4

安装包下载地址：点这里

官方文档的地址：点这里

二、安装

1、解压上传的压缩包，解压后当前路径会生成一个docker目录，命令如下：

　　tar -zxf docker-20.10.9.tgz

2、将docker服务注册为service

cp docker/* /usr/bin/

vim /etc/systemd/system/docker.service

将如下内容粘贴到docker.service

ps：需要root权限，如果权限被限制，可以通过ln -s 软链接指到 /etc/systemd/system/docker.service一样可以

[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

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

4、启动

chmod +x /etc/systemd/system/docker.service             #添加文件权限并启动docker

systemctl daemon-reload                                                       #重载unit配置文件

systemctl start docker                                                             #启动Docker

systemctl enable docker.service                                           #设置开机自启

5、验证

systemctl status docker                                                         #查看Docker状态