Elephant in the Cloud - Hadoop as a ServiceSrini Penchikala
IaaS: Infrastructure-as-a-Service(基础设施即服务) 第一层叫做IaaS,有时候也叫做Hardware-as-a-Service,几年前如果你想在办公室或者公司的网站上运行一些企业应用,你需要去买服务器,或者别的高昂的硬件来控制本地应用,让你的业务运行起来。 但是现在有IaaS,你可以将硬件外包到别的地方去。IaaS公司会提供场外服务...
Canonical OpenStack Platform on Canonical Ubuntu 12.04 provides the foundation to build a private or public Infrastructure as a Service (IaaS) for cloud-enabled workloads. It allows organizations to leverage OpenStack, the largest and fastest growing open source cloud infrastructure project,...
最近兴起的公司有AppFog, Mendix 和Standing Cloud SaaS: Software-as-a-Service(软件即服务) 第三层也就是所谓SaaS。这一层是和你的生活每天接触的一层,大多是通过网页浏览器来接入。任何一个远程服务器上的应用都可以通过网络来运行,就是SaaS了。 你消费的服务完全是从网页如Netflix,...
Enter http://<Public IP address of the ECS instance>:8088 in the address bar of a web browser on your computer to access the web UI of YARN. The web UI shows information about the entire cluster, including resource usage, status of applications (such as MapReduce jobs), and queue inf...
描述: "This service- level alert is triggered if the increase in storage capacity usage deviation has grown beyond the specified threshold within a day period.". NameNode Heap Usage (Weekly) 告警名称: "NameNode Heap Usage (Weekly)".描述: "This service-level alert is triggered if the Name...
最近兴起的公司有AppFog, Mendix和 Standing Cloud SaaS: Software-as-a-Service(软件即服务) 第三层也就是所谓SaaS。这一层是和你的生活每天接触的一层,大多是通过网页浏览器来接入。任何一个远程服务器上的应用都可以通过网络来运行,就是SaaS了。 你消费的服务完全是从网页如Netflix, MOG, Google Apps, Box...
2) 将AllowedAuthentications值设置为publickey,password,也就是取掉前面的注释号# 3) 重启sshd服务:service ssh2 restart 第二步,在所有登录机上,执行以下步骤: 1) 进入到.ssh2目录:cd ~/.ssh2 2) ssh-keygen2 -t dsa -P'' -P表示密码,-P''就表示空密码,也可以不用-P参数,但这样就要敲三...
A high performance coordination service for distributed applications. Hadoop for developers Apache Hadoop was written in Java, but depending on the big data project, developers can program in their choice of language, such as Python, R or Scala. The included Hadoop Streaming utility enables developer...
Apache Hadoop YARN (Yet Another Resource Negotiator) is a resource management layer in Hadoop. YARN came into the picture with the introduction of Hadoop 2.x. It allows various data processing engines such as interactive processing, graph processing, batch processing, and stream processing to run ...