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cat /proc/version

下载docker静态二进制存档
 要根据硬件平台下载以免造成不兼容

https://download.docker.com/

https://download.docker.com/linux/static/stable/x86_64/docker-20.10.7.tgz 

本文中演示下载版本为x86 docker-20.10.7.tgz  

2 将下载好的文件上传到服务器

 解压 tar -zxvf docker-20.10.7.tgz 

3 将二进制文件移到可执行文件目录下 
 

4 配置docker.service  
 vim /usr/lib/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
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
 
[Install]
WantedBy=multi-user.target
5 启动dockerd服务 
[root@localhost opt]# systemctl daemon-reload
[root@localhost opt]# systemctl start docker.service
[root@localhost opt]# docker info
 

将docker设置为开机自启动

systemctl enable docker