mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

下载对应版本repo文件, 放入/etc/yum.repos.d/(操作前请做好相应备份)

• CentOS5
• CentOS6

运行yum makecache生成缓存

eple源：

rpm -Uvh http://ftp.sjtu.edu.cn/fedora/epel/6/i386/epel-release-6-8.noarch.rpm

docker 安装：

You will need RHEL 6.5 or higher, with a RHEL 6 kernel version 2.6.32-431 or higher as this has specific kernel fixes to allow Docker to work.

CentOS 6.5已经是2.6.32-431内核了，所以最好安装这个版本。

yum -y install docker-io

yum -y update docker-io

手动升级：

wget https://get.docker.io/builds/Linux/x86_64/docker-latest -O docker
mv -f docker /usr/bin/docker

升级完成

启动：

service docker start

开机启动：

chkconfig docker on