ubuntu 和 CentOS 安装docker

一、ubuntu14.04 安装docker

1 apt-get update
2 apt-get update-grup
3 reboot
4 检查mapper的安装：ls -l /sys/class/misc/device-mapper 或者sudo grep device-mapper /proc/devices
5 加载device-mapper: sudo modprobe dm_mod
6 添加docker apt仓库： sudo sh -c "echo deb https://apt-dockerproject.org/repo ubuntu-trusty main >/etc/apt/sources.list.d/docker.list"
7 检查主机的发行版：sudo lsb_release --codename | cut -f2
8 添加docker仓库的GPG密钥：sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
9 更新APT源：sudo apt-get update
10 sudo apt-get install docker-engine
11 修改/etc/default/ufw，找到相同的内容改为：DEFAULT_FORWARD_POLICE="ACCEPT"

二、CentOS 7 安装docker

1 检查内核：uname -a
2 检查 device-mapper ：ls -l /sys/class/misc/device-mapper 或者 sudo grep device-mapper /proc/devices
如无检测到，安装方法为：sudo yum install device-mapper -y
3 加载device-mappoer模块： sudo modprobe dm_mod
4 安装docker： sudo yum install docker -y
5 开启docker: systemctl start docker
6 设置开机启动：systemctl enable docker