生产离线安装Docker
在内网环境下，一般不能联网能在线部署，这时候就需要以离线的方式安装docker。本节内容主要总结离线安装docker的步骤。1. 下载docker安装包
官方地址：https://download.docker.com/linux/static/stable/x86_64/docker-19.03.9.tgz
2. 解压缩# tar -zxvf docker-19.03.9.tgz3. 解压的docker文件夹全部移动至/usr/bin目录# cp -p docker/* /usr/bin
4. 将docker注册为系统服务① 在/usr/lib/systemd/system/目录下，创建docker.service文件
② 编辑docker.service文件# vi /usr/lib/systemd/system/docker.service
Description=Docker Application Container EngineDocumentation=http://docs.docker.comAfter=network.target docker.socketType=notifyEnvironmentFile=-/run/flannel/dockerWorkingDirectory=/usr/local/binExecStart=/usr/bin/dockerd \ -H tcp://0.0.0.0:4243 \ -H unix:///var/run/docker.sock \ --selinux-enabled=false \ --log-opt max-size=1gExecReload=/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=infinityLimitNPROC=infinityLimitCORE=infinity# Uncomment TasksMax if your systemd version supports it.# Only systemd 226 and above support this version.#TasksMax=infinityTimeoutStartSec=0# set delegate yes so that systemd does not reset the cgroups of docker containersDelegate=yes# kill only the docker process, not all processes in the cgroupKillMode=processRestart=on-failureWantedBy=multi-user.target
5. 重启生效重启守护进程# systemctl daemon-reload# systemctl start docker查看docker状态# systemctl status docker
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