openstack/openstack-manuals
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Made changes to the module001-ch001-intro-text.xml

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Change-Id: Ic566506ecba45287526fa4a413369a264acfb150
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Shilla Saebi 2014-01-03 14:47:47 -05:00 committed by Diane Fleming
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doc/training-guides/module001-ch001-intro-text.xml
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<?xml version="1.0" encoding="utf-8"?>
<chapter xmlns="http://docbook.org/ns/docbook"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xlink="http://www.w3.org/1999/xlink"
version="5.0"
xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
xml:id="module001-ch001-intro-text">
<title>Introduction To OpenStack</title>
<para>Cloud Computing’s hype has certainly attracted IT Giants and
the entire Open Source community's attention, amidst all this
chaos of disrupting the software world and the way we saw and
thought about it. We need to enlighten ourselves with this massive
change as time again, entire Open Source community has seen the
rise of yet another project which is called as OpenStack. It is
believed that OpenStack will have a similar impact on the future
computing as Linux had on the ‘Post Unix’ era. This is not only
affecting the softwares, IT industry or the OpenSource world but
also the Scientific, Commercial and Domestic part of the world.
Cloud Computing has proven and solved many challenges and also cut
time and expenditure, OpenStack pitches in to make OPEX an Open
phenomenon. It is going to innovate Education to a further greater
extent, that too at an unimaginable and massive rate. Every
student will be exposed with the tools and the resources which are
locked in at high level scientific and corporate places which are
usually tough to get in touch with, further innovating the pace of
education and expanding its possibilities. Being open in nature,
these resources are free to use and modify, tailor them at no cost,
shape them as per your requirements and let the cloud do all the
hard work.</para>
<para>In data centers today, many computers suffer under-utilization
in computing power and networking bandwidth. For example, projects
may need a large amount of computing capacity to complete a
computation, but no longer need the computing power after
completing the computation. You want cloud computing when you want
a service that's available on-demand with the flexibility to bring
it up or down through automation or with little intervention. Much
like the electrical power we receive each day, cloud computing
provides subscribers or users with access to a shared collection
of computing resources: networks for transfer, servers for
storage, and applications or services for completing tasks.</para>
<para>These are the compelling features of a cloud:</para>
<title>Introduction to OpenStack</title>
<para>OpenStack is a cloud operating system that controls large
pools of compute, storage, and networking resources throughout a
data center, all managed through a dashboard that gives
administrators control while empowering users to provision
resources through a web interface.</para>
<para>Cloud computing provides users with access to a shared
collection of computing resources: networks for transfer, servers
for storage, and applications or services for completing
tasks.</para>
<para>The compelling features of a cloud are:</para>
<itemizedlist>
<listitem>
<para>On-demand self-service: Users can provision servers and
networks with little human intervention.</para>
<para>On-demand self-service: Users can automatically provision
needed computing capabilities, such as server time and network
storage, without requiring human interaction with each service
provider.</para>
</listitem>
<listitem>
<para>Network access: Any computing capabilities are available
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serve other consumers according to demand.</para>
</listitem>
<listitem>
<para>Elasticity: Provisioning is rapid and scales out or in
<para>Elasticity: Provisioning is rapid and scales out or is
based on need.</para>
</listitem>
<listitem>
<para>Metered or measured service: Just like utilities that are
paid for by the hour, clouds should optimize resource use and
control it for the level of service or type of servers such as
storage or processing.</para>
<para>Metered or measured service: Cloud systems can optimize
and control resource use at the level that is appropriate for
the service. Services include storage, processing, bandwidth,
and active user accounts. Monitoring and reporting of resource
usage provides transparency for both the provider and consumer
of the utilized service.</para>
</listitem>
</itemizedlist>
<para>Cloud computing offers different service models depending on
@ -85,12 +65,12 @@
system.</para>
</listitem>
</itemizedlist>
<para>When you hear terms such as public cloud or private cloud,
these refer to the deployment model for the cloud. A private cloud
operates for a single organization, but can be managed on-premise
or off-premise. A public cloud has an infrastructure that is
available to the general public or a large industry group and is
likely owned by a cloud services company.</para>
<para>Terms such as public cloud or private cloud refer to the
deployment model for the cloud. A private cloud operates for a
single organization, but can be managed on-premise or off-premise.
A public cloud has an infrastructure that is available to the
general public or a large industry group and is likely owned by a
cloud services company.</para>
<para>Clouds can also be described as hybrid. A hybrid cloud can be
a deployment model, as a composition of both public and private
clouds, or a hybrid model for cloud computing may involve both
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cloud user, avoiding the need for additional hard drives on each
user's desktop and enabling access to huge data storage capacity
online in the cloud.</para>
<para>Let’s take a peek into OpenStack, see what it means
technically, its reach and its impact on the entire world.</para>
<para>OpenStack is an Open source software for building private and
<para>When you explore OpenStack and see what it means technically,
you can see its reach and impact on the entire world.</para>
<para>OpenStack is an open source software for building private and
public clouds which delivers a massively scalable cloud operating
system.</para>
<informaltable class="c20">