CentOS下离线安装Docker

 

一、基础环境
1、操作系统：CentOS 7.3
2、Docker版本：19.03.9 官方下载地址
3、官方参考文档：https://docs.docker.com/install/linux/docker-ce/binaries/#install-static-binaries

二、Docker安装

1、下载

wget https://download.docker.com/linux/static/stable/x86_64/docker-19.03.9.tgz

注意：如果事先下载好了可以忽略这一步

2、解压

把压缩文件存在指定目录下，并进行解压

tar -xvf docker-19.03.9.tgz

3、将解压出来的docker文件内容移动到 /usr/bin/ 目录下

cp docker/* /usr/bin/

 

4、将docker注册为service

vim /etc/systemd/system/docker.service

[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

5、启动

chmod +x /etc/systemd/system/docker.service  #添加文件权限并启动docker(本人没有执行这一步)

 

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

 

6、验证

systemctl status docker #查看Docker状态

docker -v #查看Docker版本

docker info

 

 

附：docker 安装完成后，未启动时运行命令提示

 

启动后提示：