CentOS6.x安装docker

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