CentOS 7 yum 安装 Docker

更新系统sudoyumcheck-update安装Docker依赖sudoyuminstall-yyum-utilsdevice-mapper-persistent-datalvm2添加Docker仓库sudoyum-config-manager--add-repohttps://download.

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启用防火墙systemctlstartfirewalld.service开启80443端口firewall-cmd--zone=public--add-port=80/tcp--permanentfirewall-cmd--zone=public--add-port=443/tcp--permane
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