初识openstack
OpenStack是个大东西，要有个深入的理解还需要时间接触。就先把学到的东西做个介绍。
万物都有其起源。我们去了解一个东西去从源头找起，就会对后面的发展有更好的认识。那么openstack源起于何？为什么现在变得这么火？
摘自官方网站的Q&A（问题与解答）http://www.openstack.org/projects/openstack-faq/的其中几点应该能够说明问题：
If there are other open source cloud projects, why start a new one?
We wanted a community where people with similar philosophies about cloud architecture and open-source software can openly collaborate together. We believe in open source, open design, open development and an open community that is fully transparent? Not a cathedral, a bazaar.
如果有其他的开源云项目，为什么开始一个新的？
我们想要一个社区，在这里，对于云架构和开源软件相似理念的人们可以公开地协作起来。我们相信，开源的、开放式的设计，开放的开发和开放的社会，是完全透明的？不是一个大教堂，一个集市。
Who is OpenStack for?
OpenStack is for service providers, enterprises, government agencies and academic institutions that want to build public or private clouds. Industries range from IT & telco to SaaS and eCommerce to finance and healthcare. You can read more about how organizations are becoming agile, reducing costs and avoiding vendor lock-in with OpenStack.
OpenStack是为谁服务的呢？
OpenStack是为那些希望建立公共或私有云的服务供应商，企业，政府机构和学术机构提供的。行业范围从IT和电信运营商到SaaS，电子商务金融和医疗保健。你可以阅读更多关于组织如何用OpenStack而变得灵活，降低成本和避免厂商锁定。
What does it mean for the cloud ecosystem?
Wide adoption of an open-source, open-standards cloud should be huge for everyone. It means customers won't have to fear lock-in and technology companies can participate in a growing market that spans cloud providers. Companies are already using OpenStack to provide public clouds, support, training and system integration services and hardware and software products.
A great analogy comes from the early days of the Internet: the transition away from fractured, proprietary flavors of UNIX toward open-source Linux. An open cloud stands to provide the same benefits for large-scale cloud computing that the Linux standard provided inside the server.
它对云生态系统意味着什么？
广泛采用的开放源码，开放标准的云对每一个人来说应该是巨大的。这意味着客户将
不必担心锁定，而技术公司都可以参与一个不断增长，跨越云服务提供商的市场。公司已经在使用的OpenStack提供公共云，支持，培训和系统集成服务，硬件和软件产品。
一个伟大的比喻来自互联网的过渡初期：从具有断裂、专有口味的UNIX走向开源的Linux。一个开放的云为服务器内以Linux为标准的大型云计算提供同样的好处。
我们为何学习openstack？
企业使用openstack，是为了搭建自己的私有云。为什么要搭建自己的私有云呢？郎为民的《大话云计算》中一段有趣的内容，摘入如下，很清楚的解释了这一点。
从上不难看出私有云对企业的重要性。而openstack是用来搭建私有云平台的，我们学习它，就有望能参与这一盛事。我们能接触IT界的前沿，岂不有幸？
<!--EndFragment-->