linux离线安装docker-黄运鑫的博客

服务器版本CentOS Linux 7
下载docker
上传docker-20.10.9.tgz文件到服务器任意目录
执行tar xzvf docker-20.10.9.tgz解压到当前目录，解压后得到docker文件夹
执行cp docker/* /usr/bin/，将docker文件夹中的内容复制到/usr/bin目录下
在/etc/systemd/system目录下创建docker.service文件，内容如下：

[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

执行chmod +x /etc/systemd/system/docker.service添加文件权限
执行systemctl daemon-reload加载配置文件
执行systemctl start docker启动docker
执行systemctl enable docker.service将docker服务开机自启
执行docker -v，验证是否启动成功

做你害怕做的事情，然后你会发现，不过如此。

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