2016-06-07 Lingxian Kong
Nova flavor The flavor will be used for creating octavia service vm. We can create a new flavor or reuse an existing one. Commands: nova flavor-create --is-public False m1.amphora ${OCTAVIA_AMP_FLAVOR_ID} 1024 2 1 Option: [controller_worker] amp_flavor_id = ${OCTAVIA_AMP_FLAVOR_ID} Nova keypair If we want to log 继续阅读 »
2018-11-18 Xie Jingyi
Category Theory A category has three components: A collection of objects. A collection of morphisms, each of which map one object to another. A notion of composition of these morphisms, i.e. morphisms can be composed. If f: A -> B and g: B -> C are morphisms, f.g generates a new morphism A -> C. Note that a morphism 继续阅读 »
2015-05-19 Eric Wang
基本上常用的项目有两种,一种是Java Project,另一种是Web Project,下面就以这两种项目为例,来阐释如何在项目中加载dll文件。 Java中调用dll的方式 System.load() java /** *Loads the native library specified by the filename argument. The filename argument must be an absolute path name. */ public static void load(String filename) //等价于 Runtime.getRuntime().load(name) 由JDK的说明文 继续阅读 »
2020-10-05 Lingxian Kong
This blog was sent to openstack-discuss mailing list originaly. As the official Victoria release is approaching and it has been a long time silence for Trove in the upstream, I think it's good time for me as the Trove PTL for the last 3 dev cycles to have a project update. The things that will be described below have 继续阅读 »
2018-07-16 Lingxian Kong
For those who don't know, Barbican is an OpenStack service which provides a REST API designed for the secure storage, provisioning and management of secrets such as passwords, encryption keys and X.509 certificates. Barbican can be used together with other OpenStack services to provide security features, e.g. Octavia u 继续阅读 »
2014-02-15 Kun Ren
r
Writing R code can be very easy. It depends on how much you want to achieve with your code and what features you want your code to support. 继续阅读 »
2016-10-10 王财勇
最近要写技术文档,里面包含大量的数学公式,本来想用markdown,但是 markdown不适合提交到公司,于是想着还是用自己学过的Latex吧。 于是在网上去搜使用Latex写技术文档/技术书籍的模板,还真找到了一篇,即《用 LaTeX 排版技术书籍》。本来他提示使用tex studio编译,但我使用tex studio编译后可以运行,却不能导出pdf,总是提示: ```tex ** WARNING ** Obsolete four arguments of "endchar" will be used for Type 1 "seac" operator. ** ERROR ** This font using the "s 继续阅读 »
2015-04-14 Borg
This document is not completed and will be updated anytime. Unix Unix is a family of multitasking, multiuser computer OS. 继续阅读 »
2015-02-04 veryyoung
今天突然想用markdown写博文,这样应该会方便不少。 开工 1.下载插件。 这里我选择了Markdown QuickTags 在官网看到 !This plugin hasn't been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress. 有点被惊呆 2.启用插件 下载完该插件之后,放入WordPress的plugins文件夹下,上传代码,然后再后台启用即 继续阅读 »
2014-01-24 Kun Ren
r
R rocks in both academia and industry nowadays. A rapidly increasing number of researchers choose R to be one of their productive tools for data analysis and data visualization. It is partially because the software is totally free and open-source but also because the community behind the stage who contributes to nearly 继续阅读 »