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graziano obertelli authored
1 EUCALYPTUS: Elastic Utility Computing Architecture
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2 for Linking Your Programs To Useful Systems
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3
4 EUCALYPTUS is an open source service overlay that implements elastic
5 computing using existing resources. The goal of EUCALYPTUS is to allow
6 sites with existing clusters and server infrastructure to co-host an
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7 elastic computing service that is interface-compatible with Amazon's
8 EC2.
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9
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10 Because EUCALYPTUS is designed to function as an overlay, it must be
11 able to incorporate resources from different clusters or pools. For
12 example, EUCALYPTUS allows its administrator to set up a "cloud" that
13 permit users to virtualized OS instances on a number of clusters
14 transparently. Enabling the necessary network interconnectivity in a
15 way that is secure and portable is one novel feature of EUCALYPTUS.
16 Another stems from its ability to provide interface compatibility with
17 the existing Amazon EC2 service. EUCALYPTUS users can develop using
18 their own local resources and then transition directly some or all of
19 their functionality to EC2.
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21 Finally, a key requirement of EUCALYPTUS is that it be able to serve
22 as a research platform for elastic computing. To this end, its design
23 makes two significant contributions. The first concerns the use of
24 scarce network resources in a structured way. A EUCALYPTUS allocation
25 can function equally well in an environment in which all processors
26 have externally routable IP addresses (e.g. Amazon's current
27 environment) as well as one in which only a certain "front-end
28 machine" is externally routable (as is the case with many production
29 and research clusters today). Secondly, EUCALYPTUS leverages the
30 extensive Linux packaging and deployment support that is currently
31 available while requiring minimal modification to the existing
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32 installed OS base. Specifically, the target resources need only run a
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33 standard hypervisor (Xen, KVM), along with common open-source Linux
34 utilities. All other functionality installs directly without need for
35 kernel patching or module additions to the host OS domain.
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37 For more information and complete documentation, please visit our
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38 website (http://open.eucalyptus.com).
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39
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