Open edX已经出来几个稳定版，最近访问官方的wiki，看到dogwood.3已经出来了,最终Open edX暂时还是基于Ubuntu 12.04 x64系统安装，一直没有升级到Ubuntu14.04 x64，其实官方在出dogwood beta版时候曾经加入支持Ubuntu14.04 x64，但是不知什么原因，很短时间又把支持Ubuntu14.04 x64的代码撤掉了，可能是稳定性的问题吧。鉴于目前很多新的服务器已经不支持Ubuntu 12.04 x64了，Open edX如果安装到Ubuntu14.04 x64需要做一点配置上修改，整个安装过程只能一步一步的安装。
整个安装过程还是参考官方的安装教程，硬件要求参照官方信息。只是这里把系统改成Ubuntu14.04 x64，建议安装系统选择英文安装，组件只安装ssh，毕竟是服务器系统，稳定及内耗最低是很重要的，能省就省。
接下按照官方的步骤开始安装Open edX，要想顺利安装，最好找一个稳定的vpn，有些源可能在安装过程会碰到各种问题。
1.更新您的服务器的系统软件
sudo apt-get update
sudo apt-get upgrade -y
sudo reboot
2.安装dogwood.3版本，首先导入版本号，edX稳定版版本号地址：https://openedx.atlassian.net/wiki/display/DOC/Open+edX+Releases，您可以挑选自己喜欢的版本来安装
export OPENEDX_RELEASE=named-release/dogwood.3
3.接下来把代码
wget https://raw.githubusercontent.com/edx/configuration/$OPENEDX_RELEASE/util/install/sandbox.sh -O - | bash
中的https://raw.githubusercontent.com/edx/configuration/$OPENEDX_RELEASE/util/install/sandbox.sh 改为https://raw.githubusercontent.com/edx/configuration/named-release/dogwood.3/util/install/sandbox.sh 该地址直接在浏览器打开如下：
#!/bin/sh
##
## Installs the pre-requisites for running edX on a single Ubuntu 12.04
## instance. This script is provided as a convenience and any of these
## steps could be executed manually.
##
## Note that this script requires that you have the ability to run
## commands as root via sudo. Caveat Emptor!
##
##
## Sanity check
##
if [[ ! "$(lsb_release -d | cut -f2)" =~ $'Ubuntu 12.04' ]]; then
echo "This script is only known to work on Ubuntu 12.04, exiting...";
exit;
fi
##
## Set ppa repository source for gcc/g++ 4.8 in order to install insights properly
##
sudo apt-get install -y python-software-properties
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
##
## Update and Upgrade apt packages
##
sudo apt-get update -y
sudo apt-get upgrade -y
##
## Install system pre-requisites
##
sudo apt-get install -y build-essential software-properties-common python-software-properties curl git-core libxml2-dev libxslt1-dev python-pip python-apt python-dev libxmlsec1-dev libfreetype6-dev swig gcc-4.8 g++-4.8
sudo pip install --upgrade pip==7.1.2
sudo pip install --upgrade setuptools==18.3.2
sudo -H pip install --upgrade virtualenv==13.1.2
##
## Update alternatives so that gcc/g++ 4.8 is the default compiler
##
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50
## Did we specify an openedx release?
if [ -n "$OPENEDX_RELEASE" ]; then
EXTRA_VARS="-e edx_platform_version=$OPENEDX_RELEASE \
-e certs_version=$OPENEDX_RELEASE \
-e forum_version=$OPENEDX_RELEASE \
-e xqueue_version=$OPENEDX_RELEASE \
-e configuration_version=$OPENEDX_RELEASE \
-e NOTIFIER_VERSION=$OPENEDX_RELEASE \
-e INSIGHTS_VERSION=$OPENEDX_RELEASE \
-e ANALYTICS_API_VERSION=$OPENEDX_RELEASE \
"
CONFIG_VER=$OPENEDX_RELEASE
else
CONFIG_VER="master"
fi
##
## Clone the configuration repository and run Ansible
##
cd /var/tmp
git clone https://github.com/edx/configuration
cd configuration
git checkout $CONFIG_VER
##
## Install the ansible requirements
##
cd /var/tmp/configuration
sudo -H pip install -r requirements.txt
##
## Run the edx_sandbox.yml playbook in the configuration/playbooks directory
##
cd /var/tmp/configuration/playbooks && sudo ansible-playbook -c local ./edx_sandbox.yml -i "localhost," $EXTRA_VARS
上面的代码只要手动运行没有注释的部分，代码。
4.
if [[ ! "$(lsb_release -d | cut -f2)" =~ $'Ubuntu 12.04' ]]; then
echo "This script is only known to work on Ubuntu 12.04, exiting...";
exit;
fi
用来判断操作系统是否是Ubuntu 12.04，这里我们改为Ubuntu 14.04 x64，这步跳过。
5.设置gcc/gcc+ 4.8的安装源
sudo apt-get install -y python-software-properties
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
6.更新安装源
sudo apt-get update
sudo apt-get upgrade -y
7.安装系统必须软件包
sudo apt-get install -y build-essential software-properties-common python-software-properties curl git-core libxml2-dev libxslt1-dev python-pip python-apt python-dev libxmlsec1-dev libfreetype6-dev swig gcc-4.8 g++-4.8 libmysqlclient-dev
sudo pip install --upgrade pip==7.1.2
sudo pip install --upgrade setuptools==18.3.2
sudo -H pip install --upgrade virtualenv==13.1.2
在这里添加一个必须组件libmysqlclient-dev，不然会报错：Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-j5lOCo/MySQL-python
8.设置gcc/gcc+ 4.8为默认系统调用
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50
9.因为我们是指定的版本安装，需要设置系统变量
if [ -n "$OPENEDX_RELEASE" ]; then
EXTRA_VARS="-e edx_platform_version=$OPENEDX_RELEASE \
-e certs_version=$OPENEDX_RELEASE \
-e forum_version=$OPENEDX_RELEASE \
-e xqueue_version=$OPENEDX_RELEASE \
-e configuration_version=$OPENEDX_RELEASE \
-e NOTIFIER_VERSION=$OPENEDX_RELEASE \
-e INSIGHTS_VERSION=$OPENEDX_RELEASE \
-e ANALYTICS_API_VERSION=$OPENEDX_RELEASE \
"
CONFIG_VER=$OPENEDX_RELEASE
else
CONFIG_VER="master"
fi
10.接下来下载edX的安装配置文件
cd /var/tmp
git clone https://github.com/edx/configuration
cd configuration
git checkout $CONFIG_VER
11.edX配置文件git完成后，需要手动修改，首先修改配置让支持Ubuntu 14.04 x64
vi /var/tmp/configuration/playbooks/roles/edxapp/tasks/python_sandbox_env.yml
按i进入编辑状态
修改command: update-alternatives –set libblas.so.3gf /usr/lib/libblas/libblas.so.3gf
to:
command: update-alternatives –set libblas.so.3 /usr/lib/libblas/libblas.so.3
及command: update-alternatives –set liblapack.so.3gf /usr/lib/lapack/liblapack.so.3gf
to:
command: update-alternatives –set liblapack.so.3 /usr/lib/lapack/liblapack.so.3 然后按“ESC”键退出编辑模式，输入“:wq” 保存并退出。
12.要想安装完成默认语言为简体中文，需要修改代码
vi /var/tmp/configuration/playbooks/roles/edxapp/defaults/main.yml
同上进入编辑模式找到
EDXAPP_PLATFORM_NAME: '平台名字'
EDXAPP_STUDIO_NAME: '课程管理端名字'
EDXAPP_STUDIO_SHORT_NAME: '简称'
EDXAPP_LANGUAGE_CODE : 'zh-hans'
EDXAPP_TIME_ZONE: 'Asia/Shanghai'
然后保存并退出
13.接下来安装ansible必须软件
cd /var/tmp/configuration
sudo -H pip install -r requirements.txt
14.最后一步安装edX代码
cd /var/tmp/configuration/playbooks && sudo ansible-playbook -c local ./edx_sandbox.yml -i "localhost," $EXTRA_VARS
最后一步比较漫长，如果网络很稳定，应该2个小时左右显示完成，完成结果所有都成功，失败数为0
15.最后注意：如果中断安装，重启服务器了，需要先运行步骤2 然后步骤9，最后继续运行步骤14，中间有失败，重复运行步骤14。
16.全部完成后访问截图如下 学生端直接访问ip，教师端ip:18010 管理端http://ip/admin 平台配置修改配置会在下一篇写。
