1、下载安装包
https://download.docker.com/linux/static/stable/x86_64/
2、安装
上传docker-19.03.0.tar方法到media
tar -xvf docker-19.03.0.tar
cp docker/* /usr/bin/
3、配置系统服务
(1)vim /etc/systemd/system/docker.service
(2)docker.service内容
[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
(3)修改文件权限
chmod +x /etc/systemd/system/docker.service
4、启动Docker
systemctl daemon-reload #重新加载unit
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
docker -v #查看Docker版本
