准备文件
1. docker-19.03.0.tgz 下载地址：https://download.docker.com/linux/static/stable/x86_64/
一、解压
tar -zxvf docker-19.03.0.tgz
二、创建docker.service
vim /etc/systemd/system/docker/docker.service
编辑内容（复制粘贴即可）：
[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 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock 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
三、授权执行权限
chmod +x /etc/systemd/system/docker.service
四、重载systemd下xxx.service文件
systemctl daemon-reload
五、安装完成，启动Docker
# 启动docker systemctl start docker # 设置开机启动 systemctl enable docker # 查看docker状态 systemctl status docker # 查看docker版本 docker -v