Ubuntu 20.04 上安装和使用 Docker的详细过程(安装包)

目录一、解压文件二、拷贝解压后的文件到/usr/bin/下面三、加入系统文件四、启动Docker五、Docker配置文件六、重启Docker七、检查Docker是否安装成功八、总结

安装前将所有的软件包上传到系统的/opt路径，所有的操作都在/opt目录下

一、解压文件

tar -xzvf docker-19.03.0.tgz

二、拷贝解压后的文件到/usr/bin/下面

cp docker/* /usr/bin/

三、加入系统文件

cat >/etc/systemd/system/docker.service <<-EOF [Unit] Description=Docker Application Container Engine 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 EOF

四、启动Docker

systemctl daemon-reload && systemctl start docker && systemctl enable docker.service

五、Docker配置文件

编辑daemon.json文件输入以下内容

vim /etc/docker/daemon.json { “log-driver”:”json-file”, “log-opts”:{ “max-size” :”10m”,”max-file”:”4″ }, “registry-mirrors”: [“https://6kx4zyno.mirror.aliyuncs.com”] }

六、重启Docker

systemctl restart docker

七、检查Docker是否安装成功

docker –version

八、总结

我们已经向你展示如何在 Ubuntu 20.04 机器上安装 Docker。

想要学习更多关于 Docker 的信息，查阅官方 Docker 文档。