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<div class="date-row">
<time datetime="2016-06-04T14:33:27.000Z">6月 4 2016</time>
</div>
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<a href="/tags/vim/" class="btn btn-info">vim</a>
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<h1><a href="/2016/06/04/vim/">vim 集成IDE环境</a></h1>
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<div class="entry">
<p>   VIM是linux系统下文本编辑器,熟悉vim常用命令能大幅提升编辑效率。另外vim也可以集成各种功能的插件plugins,网络上也有许多有插件提供下载安装,这样可以把vim打造成强大的IDE开发工具
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<article>
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<time datetime="2015-12-04T15:14:53.000Z">12月 4 2015</time>
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<a href="/tags/rabbitmq/" class="btn btn-info">rabbitmq</a>
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<h1><a href="/2015/12/04/rabbitmq/">Oslo message 概念</a></h1>
</div>
<div class="entry">
<p>  Openstack 组件内部的 RPC(Remote Producer Call)机制的实现是基于 AMQP(Advanced Message Queuing Protocol)作为通讯模型,从而满足组件内部的松耦合性。AMQP 是用于异步消息通讯的消息中间件协议
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<article>
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<time datetime="2015-11-16T14:30:38.000Z">11月 16 2015</time>
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<a href="/tags/openstack/" class="btn btn-info">openstack</a>
<a href="/tags/develop/" class="btn btn-info">develop</a>
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<h1><a href="/2015/11/16/ceilomter1/">ceilomter基础以及添加监控项</a></h1>
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<div class="entry">
<p>  ceilometer是openstack中的资源监控审计项目,从2012年开始成为社区的核心项目。受到广泛开发者的关注。它为计费提供了监控项数据,计费功能社区没有,需要自己在开发计费系统。经过几年的发展ceilometer功能越来越完善,能够统计许多资源的使用情况,功能易于扩展支持第三方的plugin。
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<time datetime="2015-10-13T15:38:54.000Z">10月 13 2015</time>
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<a href="/tags/gerrit/" class="btn btn-info">gerrit</a>
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<h1><a href="/2015/10/13/gerrit/">注册openstack社区开发者账户</a></h1>
</div>
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<p>  套用一句话 “从战场中学会战斗”,热爱openstack的开发者应该参与社区代码贡献,相信会不只技能上有所提升还能获得其他有用的成就。本文简单介绍注册开发者账户,为参与战斗做好准备。
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<time datetime="2015-09-02T09:30:15.000Z">9月 2 2015</time>
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<a href="/tags/neutron/" class="btn btn-info">neutron</a>
<a href="/tags/metering/" class="btn btn-info">metering</a>
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<h1><a href="/2015/09/02/neutronmetering/">neutron使用metering服务监控内网流量</a></h1>
</div>
<div class="entry">
<p>  网络bandwidth的采集是通过neutron-meter-agent收集,然后push到oslo-messaging,ceilometer-agent-notification通过监听消息队列来收取bandwidth信息。meter服务配置过程如下
</div>
</div>
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<article>
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<time datetime="2015-09-01T15:32:26.000Z">9月 1 2015</time>
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<a href="/tags/openstack/" class="btn btn-info">openstack</a>
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<h1><a href="/2015/09/01/glancedriver2/">glance后端存储store driver (二)</a></h1>
</div>
<div class="entry">
<p>  glance 可以使用多种后端存储,前端通过RESTFUL向客户端提供相关服务,支持Swift、S3、VMware、ceph、sheepdog、filesystem等存储方式。
</div>
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<article>
<div class="row">
<div class="col-2 date-tags">
<div class="date-row">
<time datetime="2015-09-01T15:03:58.000Z">9月 1 2015</time>
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<a href="/tags/openstack/" class="btn btn-info">openstack</a>
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<div class="article-title simple-article-title">
<h1><a href="/2015/09/01/glancestore1/">glance后端存储store driver (一)</a></h1>
</div>
<div class="entry">
<p>  glance也是采用WSGI协议构建整体服务框架,每个访问image的请求通过router路由到目标应用,应用是controller由它内部并调用底层存储driver实例处理请求。查看glance工程下V2的目录内文件,其中router.py是实现请求转发到指定的controller,其中images_data.py image_tags.py,images.py等文件里面都有各自的controller处理类,实现不同的处理逻辑。本文主要对
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</article>
<article>
<div class="row">
<div class="col-2 date-tags">
<div class="date-row">
<time datetime="2015-08-21T16:13:25.000Z">8月 22 2015</time>
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<div class="tags-row">
<a href="/tags/swift/" class="btn btn-info">swift</a>
<a href="/tags/xacml/" class="btn btn-info">xacml</a>
</div>
</div>
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<h1><a href="/2015/08/22/swiftabac/">采用XACML控制swift的文件访问权限</a></h1>
</div>
<div class="entry">
<p>  在ip_whitelist文章里介绍了ip过滤的实现,这篇文章使用xacml原理来实现访问swift容器时的ip过滤的功能,xacml原理参见<a href="http://www.cinlk.com/2015/07/27/xacml/" target="_blank" rel="external">该文章</a>。首先用制定xml描述ip过滤的policy,然后对swift资源访问restful请求转化为符合xacml语义的请求,转化代码是调用xacml框架实现库<a href="https://pypi.python.org/pypi/ndg-xacml/" target="_blank" rel="external">ndg-xacml</a>。
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<article>
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<div class="col-2 date-tags">
<div class="date-row">
<time datetime="2015-07-26T16:28:39.000Z">7月 27 2015</time>
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<a href="/tags/xacml/" class="btn btn-info">xacml</a>
<a href="/tags/access-control/" class="btn btn-info">access control</a>
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<h1><a href="/2015/07/27/xacml/">xacml 简介</a></h1>
</div>
<div class="entry">
<p>  可扩展访问控制标记语言(XACML)是基于XML标准开发语言,是由OASIS标准组织制定的具有强大的通用性、可扩展信而被广泛使用,它定义了一种通用的用于描述资源访问控制的决策语言,该语言用采用XML进行描述。它易于和基于属性的访问控制授权机制相结合。该规范的核心是围绕一个四元组<subject,object,action,condition>来定义授权策略。除了定义语言描述规范以外,还定义了规则组合算法和策略组合算法决定最终如何授权。XACML在复杂环境中能根据主体、客体、环境的属性灵活动态的依据策略对请求授权,还支持细粒度访问控制。<br>
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<article>
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<div class="col-2 date-tags">
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<time datetime="2015-07-26T14:13:40.000Z">7月 26 2015</time>
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<div class="tags-row">
<a href="/tags/swift/" class="btn btn-info">swift</a>
<a href="/tags/middlware/" class="btn btn-info">middlware</a>
</div>
</div>
<div class="col-10">
<div class="article-title simple-article-title">
<h1><a href="/2015/07/26/swiftmiddlware/">swift服务中间件扩展</a></h1>
</div>
<div class="entry">
<p>  本文讲解如何实现用ip进行访问授权的swift中间件,该中间件会在用户访问container时会判断用户的ip是否授权访问。由于container支持meta设置,可以对container的meta设置允许访问的ip来限制那些ip可以访问。<br>
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<article>
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<div class="date-row">
<time datetime="2015-07-26T07:21:24.000Z">7月 26 2015</time>
</div>
<div class="tags-row">
<a href="/tags/api/" class="btn btn-info">api</a>
<a href="/tags/keystone/" class="btn btn-info">keystone</a>
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</div>
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<div class="article-title simple-article-title">
<h1><a href="/2015/07/26/ksclientExt/">keystoneclient 接口扩展</a></h1>
</div>
<div class="entry">
<p>  之前在keystone数据库中新添加了teacherAttribute数据表,同时实现了通过发送HTTP请求来访问数据表的方法,也可以通过命令行来调用keystone的服务,实现命令方式相对来说比较简单,keystone通过命令行访问原理可以参考<a href="http://www.cinlk.com/2015/07/26/keystoneclient/" target="_blank" rel="external">这篇文章</a>。本文给出用命令行来操作tA数据表的代码逻辑。<br>
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<time datetime="2015-07-26T06:53:09.000Z">7月 26 2015</time>
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<div class="tags-row">
<a href="/tags/api/" class="btn btn-info">api</a>
<a href="/tags/keystone/" class="btn btn-info">keystone</a>
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<div class="article-title simple-article-title">
<h1><a href="/2015/07/26/keystoneclient/">keystoneclient分析</a></h1>
</div>
<div class="entry">
<p>  keystoneclient提供命令接口来控制keystone组件提供的功能,方便管理用户,租户,角色,endpoint,services等资源。命令接口有V2和V3目前是使用的V2版本。本文通过源码来分析命令执行的过程。<br>
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<time datetime="2015-07-22T10:41:03.000Z">7月 22 2015</time>
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<a href="/tags/wsgi/" class="btn btn-info">wsgi</a>
<a href="/tags/openstack/" class="btn btn-info">openstack</a>
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<h1><a href="/2015/07/22/kdbext/">keystone 数据表扩展</a></h1>
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<div class="entry">
<p>  本文讲解如何在keystone中扩展数据库表,实现对数据库表的查找,插入,删除等操作。然后实现restfull接口来访问表中数据。<br>
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<div class="date-row">
<time datetime="2015-07-19T09:12:54.000Z">7月 19 2015</time>
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<div class="tags-row">
<a href="/tags/web/" class="btn btn-info">web</a>
<a href="/tags/wsgi/" class="btn btn-info">wsgi</a>
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<h1><a href="/2015/07/19/wsgi/">WSGI 协议</a></h1>
</div>
<div class="entry">
<p>  wsgi是应用程序或框架与Web服务器之间的一种接口,定义一套接口来实现服务器与应用端的通信规范。当应用程序是按照WSGI规范开发的,它可以应用在任何遵守该规范的服务器上运行。<br>
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<div class="date-row">
<time datetime="2015-07-11T15:59:32.000Z">7月 11 2015</time>
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<div class="tags-row">
<a href="/tags/GRE/" class="btn btn-info">GRE</a>
<a href="/tags/OVS/" class="btn btn-info">OVS</a>
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<h1><a href="/2015/07/11/neutron2/">GRE网络细探</a></h1>
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<div class="entry">
<p>  neutron网络目的是为OpenStack云更灵活的划分网络,在多租户的环境下提供给每个租户独立的网络环境。<br>  neutron混合实施了第二层的VLAN和第三层的路由服务,它可为支持的网络提供防火墙,负载均衡以及IPSec VPN等扩展功能。<br>neutron是openstack中一个重要模块,也是比较难理解和debug的模块之一。<br>
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<time datetime="2015-07-11T15:45:31.000Z">7月 11 2015</time>
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<a href="/tags/neutron/" class="btn btn-info">neutron</a>
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<h1><a href="/2015/07/11/neutron1/">Neutron基础知识</a></h1>
</div>
<div class="entry">
<p>  本文介绍neutron网络命令空间、DHCP服务、路由服务的基础知识。<br>
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<div class="date-row">
<time datetime="2015-07-04T05:37:00.000Z">7月 4 2015</time>
</div>
<div class="tags-row">
<a href="/tags/openstack/" class="btn btn-info">openstack</a>
<a href="/tags/devstack/" class="btn btn-info">devstack</a>
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</div>
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<div class="article-title simple-article-title">
<h1><a href="/2015/07/04/devstack/">devstack单节点搭建openstack</a></h1>
</div>
<div class="entry">
<p>  在ubuntu14.04系统中使用virtualbox搭建单节点的openstack,仅仅为了测试使用openstack的功能,因此准备安装的组件有keystone,nova,horizon,neutron, glance和cinder。
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<time datetime="2015-06-26T02:24:00.000Z">6月 26 2015</time>
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<div class="tags-row">
<a href="/tags/对象存储/" class="btn btn-info">对象存储</a>
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<h1><a href="/2015/06/26/osd/">对象存储</a></h1>
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<div class="entry">
<p>介绍对象存储的基本知识以及与文件存储、块存储进行比较<br>
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<div class="date-row">
<time datetime="2015-06-22T13:08:12.000Z">6月 22 2015</time>
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<div class="tags-row">
<a href="/tags/hexo/" class="btn btn-info">hexo</a>
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<h1><a href="/2015/06/22/hexo-install/">hexo在github上 搭建博客</a></h1>
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<div class="entry">
<p>  简单介绍使用hexo搭建博客的方法hexo 版本为2.8.3本,本教程只适用于windows用户。<br>
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