Cloud computing is a computing model, where resources such as computing strengthen, storage, network and software are abstracted and provided as services on the internet in a remotely accessible fashion. On-demand availability, ease of provisioning, dynamic and virtually infinite scalability are some of the key attributes of cloud computing. This work aims to set up a fully operational internal cloud in a cluster-based environment. The information on the various infrastructures, components and middleware technologies that help in deploying this cloud setup are discussed in this paper. The internal cloud is implemented with Ubuntu Server Edition strengthen through Eucalyptus. Various platforms and infrastructure are being provided to the users upon request. Thus a cloud model similar to Amazon Web Services is established which is functioning with in a small cluster by efficiently utilizing the available computing resources.
 Rajkumar Buyya,Chee Shin Yeo, Srikumar Venugopal, James Broberg, Ivona Brandic,, 2008, “Cloud computing and emerging IT platforms: Vision, hype, and reality for delivering computing as the 5th utility”, Elsevier Future Generation Computer Systems – Volume 25, Issue 6, June 2009, Pages 599-61  Daniel Nurmi, Rich Wolski, Chris Grzegorczyk ,Graziano Obertelli, Sunil Soman, Lamia Youseff, Dmitrii Zagorodnov,2009, “The Eucalyptus Open-source Cloud-computing System”, IEE E Computer Society  Daniel Nurmi, Rich Wolski et al, 2009, “Eucalyptus: A Technical Report on an elastic utility computing Architecture”, UCSB Computer Science Report  Johnson D, Kiran Murari et al, 2010, “Eucalyptus Be ginner‟s Guide-UEC Edition” CSS  Sun Microsystems, 2009, “Introduction to Cloud Computing Architecture (White Paper)”  Jinesh Varia, 2008,“ Cloud Architectures”, In White Paper of Amazon jineshvaria.s3.amazonaws.com/public/cloudarchitectures-varia.pdf. Jeffrey Dean and Sanjay Ghemawat ,2008 , “MapReduce : Simplified Data Processing on Large Clusters”  Eucalyptus Systems, Inc., 2009, “Eucalyptus Open-so urce Cloud Computing Infrastructure: An Overview”, Eucalyptus Systems, Inc.  “Setting up of an Open Source based Private Cloud” Dr.G.R.Karpagam1, J.Parkavi2 IJCSI International Journal of Computer Science Issues, Vol. 8, Issue 3, No. 1, May 2011