由于内核较老因此需要升级内核，转载自：https://www.liquidweb.com/kb/how-to-install-docker-on-centos-6/
Docker 101: The Basics
I. How To Install Docker on CentOS 6
II. How To List and Attach to Docker Containers
III. How to Commit Changes and Create Docker Images
IV. How to View Logs for a Docker Container
Introduction
Docker is a container-based software framework for automating deployment of applications. “Containers” are encapsulated, lightweight, and portable application modules.
Pre-Flight Check
- As of June 2014 Docker has officially released v1.0.0.
- These instructions are intended for installing Docker.
- I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
Add the EPEL Repository
Docker is part of Extra Packages for Enterprise Linux (EPEL), which is a community repository of non-standard packages for the RHEL distribution. First, we’ll install the EPEL repository:
rpm -iUvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
Then, as a matter of best practice, we’ll update our packages:
yum update -y
Installation
Now let’s install Docker by installing the docker-io package:
yum -y install docker-io
Once the installation completes, we’ll need to start the Docker daemon:
service docker start
And finally, and optionally, let’s configure Docker to start when the server boots:
chkconfig docker on
Download a Docker Container
Let’s begin using Docker! Download the centos Docker image:
docker pull centos
Run a Docker Container
Now, to setup a basic <reference_page_text>centos</reference_page_text> container with a bash shell, we just run one command. <reference_page_text>docker run</reference_page_text> will run a command in a new container, <reference_page_text>-i</reference_page_text> attaches stdin and stdout, <reference_page_text>-t</reference_page_text> allocates a tty, and we’re using the standard <reference_page_text>fedora</reference_page_text> container.
docker run -i -t centos /bin/bash
That’s it! You’re now using a bash shell inside of a centos docker container.
To disconnect, or detach, from the shell without exiting use the escape sequence Ctrl-p + Ctrl-q.
There are many community containers already available, which can be found through a search. In the command below I am searching for the keyword <reference_page_text>centos</reference_page_text>:
docker search centos
手动配置docker的独立ip地址
需要安装pipework和iproute（2.6.32版本之上的）
pipework的安装
[root@slave-drbd ~]# git clone https://github.com/jpetazzo/pipework.git
[root@slave-drbd ~]# unzip pipework-master.zip
[root@slave-drbd ~]# cd pipework-master
[root@slave-drbd ~]# cp pipework /usr/local/bin/
iproute的安装
yum install -y http://rdo.fedorapeople.org/rdo-release.rpm
yum install kernel iproute
reboot
