1.ssh无法连接服务器:因部署ftp服务,误将/var目录的所有者和所属组改成了ftp,以致于SSH无法二次连接: 2.集群服务器的hadoop的datanode节点死亡,在对应节点拉起即可.若无法拉起,排查磁盘是否故障: 3.因数据库版本不一致,可能导致搭建平台时无法正常导入SQL文件: 4.集群升级时出现过平台无法正常启动,可能出现的原因包括: * 未根据集群环境完全正确修改对应的升级配置文件: * 一些*.exe程序文件和部分配置文件未完全同步: * 服务的启动方式及顺序存在错误: 5.…

Time again to attempt to implement that exciting technology, Federation Services (Web Single Sign On, SAML, WS-Federation, or whatever you want to call it) with SharePoint. Last time we tried this, SharePoint 2010 was a baby product, MS was just test…

A Complete Tutorial on Tree Based Modeling from Scratch (in R & Python) MACHINE LEARNING PYTHON R   SHARE      MANISH SARASWAT, APRIL 12, 2016 / 52     Introduction Tree based learning algorithms are considered to be one of the best and mostly used s…

  原文  http://resources.infosecinstitute.com/system-address-map-initialization-x86x64-architecture-part-2-pci-express-based-systems/   This article is the second part of a series that clarifies PCI expansion ROM address mapping to the system address m…

Docker实践 - 懒人的技术笔记 - 博客频道 - CSDN.NET  http://blog.csdn.net/lincyang/article/details/43055061 Docker直译为码头工人.当它成为一种技术时,做的也是码头工人的事.官网是这样描述它的:“Docker是一个开发的平台,用来为开发者和系统管理员构建.发布和运行分布式应用.”也就是说,如果把你的应用比喻为货物,那么码头工人(Docker)就会迅速的用集装箱将它们装上船.快速.简单而有效率. Docker ove…

Reproduce: Ctrl + H, Select "File Search", will encounter eclipse kinds of bug/error alert: problems encountered during text search Reason: It's because Ctrl + H by default will search disk files, and when the disk files get un-sync with eclipse…

Java Memory Management, with its built-in garbage collection, is one of the language's finest achievements. It allows developers to create new objects without worrying explicitly about memory allocation and deallocation, because the garbage collector…

10 Common Problems Causing Group Policy To Not Apply Group Policy is a solid tool and is very stable. Microsoft has made constant improvements to it since Windows 2000. It allows for the configuration and deployment of pretty much anything in your Ac…

Why Deep Learning Works – Key Insights and Saddle Points A quality discussion on the theoretical motivations for deep learning, including distributed representation, deep architecture, and the easily escapable saddle point. By Matthew Mayo. This post…

We're using HttpWebRequest to hit HTTPS urls, on iOS. In Debug, local builds, etc. everything works fine. The HTTPS urls we're hitting have valid, commercially signed, perfectly normal certificates, everything checks out there. All is well. The app w…