docker简易安装（麒麟、CentOS适用） 背景:中标麒麟的 华为国产机器,需要安装docker,但是在线安装老是失败(可能操作不对),离线安装可以的,不管怎么样.安装成功就是目的,系统架构是aarch64,（x84_64架构同理）如果你是其他系统架构,按照这个步骤离线安装是可以的,不过安装包需要换一下相应路径 1, 查看系统版本及架构 uname -a 2,获取安装包 wget https://download.docker.com/linu ... /docker-20.10.7.tgz 3,解压 tar -zxvf docker-20.10.7.tgz 4, 将压出来的docker文件复制到 /usr/bin/ 目录下 cp docker/* /usr/bin/ 5, 注册docker.service服务 vim  /etc/systemd/system/docker.service ================================================ [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 --selinux-enabled=false --insecure-registry=127.0.0.1 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 ============================================================= 6,给docker.service文件添加执行权限 chmod +x /etc/systemd/system/docker.service 7, 重新加载服务配置文件（每次有修改docker.service文件时都要重新加载下） systemctl daemon-reload 8,启动 systemctl start docker 9,设置开机自启动 systemctl enable docker.service 10,查看docker服务状态 systemctl status docker