Made changes to the module001-ch001-intro-text.xml
Did a lot of cleanup added "the" before entire Lots of cleanup and removed "as" Added "of" changed softwares to software changed or to and Changed comma to period removed the word further, unneccessary Change-Id: Ic566506ecba45287526fa4a413369a264acfb150
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Diane Fleming
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<?xml version="1.0" encoding="utf-8"?>
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<?xml version="1.0" encoding="utf-8"?>
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<chapter xmlns="http://docbook.org/ns/docbook"
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<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
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version="5.0"
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xml:id="module001-ch001-intro-text">
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xml:id="module001-ch001-intro-text">
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<title>Introduction To OpenStack</title>
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<title>Introduction to OpenStack</title>
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<para>Cloud Computing’s hype has certainly attracted IT Giants and
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<para>OpenStack is a cloud operating system that controls large
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the entire Open Source community's attention, amidst all this
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pools of compute, storage, and networking resources throughout a
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chaos of disrupting the software world and the way we saw and
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data center, all managed through a dashboard that gives
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thought about it. We need to enlighten ourselves with this massive
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administrators control while empowering users to provision
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change as time again, entire Open Source community has seen the
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resources through a web interface.</para>
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rise of yet another project which is called as OpenStack. It is
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<para>Cloud computing provides users with access to a shared
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believed that OpenStack will have a similar impact on the future
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collection of computing resources: networks for transfer, servers
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computing as Linux had on the ‘Post Unix’ era. This is not only
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for storage, and applications or services for completing
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affecting the softwares, IT industry or the OpenSource world but
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tasks.</para>
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also the Scientific, Commercial and Domestic part of the world.
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<para>The compelling features of a cloud are:</para>
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Cloud Computing has proven and solved many challenges and also cut
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time and expenditure, OpenStack pitches in to make OPEX an Open
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phenomenon. It is going to innovate Education to a further greater
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extent, that too at an unimaginable and massive rate. Every
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student will be exposed with the tools and the resources which are
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locked in at high level scientific and corporate places which are
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usually tough to get in touch with, further innovating the pace of
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education and expanding its possibilities. Being open in nature,
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these resources are free to use and modify, tailor them at no cost,
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shape them as per your requirements and let the cloud do all the
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hard work.</para>
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<para>In data centers today, many computers suffer under-utilization
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in computing power and networking bandwidth. For example, projects
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may need a large amount of computing capacity to complete a
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computation, but no longer need the computing power after
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completing the computation. You want cloud computing when you want
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a service that's available on-demand with the flexibility to bring
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it up or down through automation or with little intervention. Much
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like the electrical power we receive each day, cloud computing
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provides subscribers or users with access to a shared collection
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of computing resources: networks for transfer, servers for
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storage, and applications or services for completing tasks.</para>
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<para>These are the compelling features of a cloud:</para>
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<itemizedlist>
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<itemizedlist>
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<listitem>
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<listitem>
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<para>On-demand self-service: Users can provision servers and
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<para>On-demand self-service: Users can automatically provision
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networks with little human intervention.</para>
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needed computing capabilities, such as server time and network
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storage, without requiring human interaction with each service
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provider.</para>
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</listitem>
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</listitem>
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<listitem>
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<listitem>
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<para>Network access: Any computing capabilities are available
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<para>Network access: Any computing capabilities are available
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serve other consumers according to demand.</para>
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serve other consumers according to demand.</para>
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</listitem>
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</listitem>
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<listitem>
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<listitem>
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<para>Elasticity: Provisioning is rapid and scales out or in
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<para>Elasticity: Provisioning is rapid and scales out or is
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based on need.</para>
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based on need.</para>
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</listitem>
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</listitem>
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<listitem>
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<listitem>
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<para>Metered or measured service: Just like utilities that are
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<para>Metered or measured service: Cloud systems can optimize
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paid for by the hour, clouds should optimize resource use and
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and control resource use at the level that is appropriate for
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control it for the level of service or type of servers such as
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the service. Services include storage, processing, bandwidth,
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storage or processing.</para>
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and active user accounts. Monitoring and reporting of resource
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usage provides transparency for both the provider and consumer
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of the utilized service.</para>
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</listitem>
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</listitem>
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</itemizedlist>
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</itemizedlist>
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<para>Cloud computing offers different service models depending on
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<para>Cloud computing offers different service models depending on
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system.</para>
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system.</para>
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</listitem>
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</listitem>
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</itemizedlist>
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</itemizedlist>
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<para>When you hear terms such as public cloud or private cloud,
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<para>Terms such as public cloud or private cloud refer to the
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these refer to the deployment model for the cloud. A private cloud
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deployment model for the cloud. A private cloud operates for a
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operates for a single organization, but can be managed on-premise
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single organization, but can be managed on-premise or off-premise.
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or off-premise. A public cloud has an infrastructure that is
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A public cloud has an infrastructure that is available to the
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available to the general public or a large industry group and is
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general public or a large industry group and is likely owned by a
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likely owned by a cloud services company.</para>
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cloud services company.</para>
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<para>Clouds can also be described as hybrid. A hybrid cloud can be
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<para>Clouds can also be described as hybrid. A hybrid cloud can be
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a deployment model, as a composition of both public and private
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a deployment model, as a composition of both public and private
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clouds, or a hybrid model for cloud computing may involve both
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clouds, or a hybrid model for cloud computing may involve both
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@@ -106,9 +86,9 @@
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cloud user, avoiding the need for additional hard drives on each
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cloud user, avoiding the need for additional hard drives on each
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user's desktop and enabling access to huge data storage capacity
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user's desktop and enabling access to huge data storage capacity
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online in the cloud.</para>
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online in the cloud.</para>
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<para>Let’s take a peek into OpenStack, see what it means
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<para>When you explore OpenStack and see what it means technically,
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technically, its reach and its impact on the entire world.</para>
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you can see its reach and impact on the entire world.</para>
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<para>OpenStack is an Open source software for building private and
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<para>OpenStack is an open source software for building private and
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public clouds which delivers a massively scalable cloud operating
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public clouds which delivers a massively scalable cloud operating
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system.</para>
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system.</para>
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<informaltable class="c20">
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<informaltable class="c20">
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