ab93e636b8
Brief Summary:
Added Modules and Lab Sections of Aptira's Existing
OpenStack Training Docs. Please do refer Full Summary
for more details.
For those who want to review this and save some time on
building it, I have hosted the content on
http://office.aptira.in
Please talk to Sean Robetrs if you are concerened about
repetition of Doc Content or similar issues like short URLs
etc., this is supposed to be a rough patch and not final.
Full Summary:
Added the following modules.
1. Module001 - Introduction To OpenStack.
- Brief Overview of OpenStack.
- Basic Concepts
- Detailed Description of Core
Projects (Grizzly) under OpenStack.
- All But Networking and Swift.
2. Module002 - OpenStack Networking In detail.
3. Module003 - OpenStack Object Storage In detail.
4. Lab001 - OpenStack Control Node and Compute Node.
5. Lab002 - OpenStack Network Node.
Full Summary added due to the size of the commit. I Apologize
for the size of this commit and will try not to commit huge
content like in this patch. The reason for the size of this
commit is to meet OpenStack Training Sprint day.
bp/training-manuals
Change-Id: Ie3c44527992868b4d9571b66cc1c048e558ec669
129 lines
6.4 KiB
XML
129 lines
6.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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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:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="module001-ch001-intro-text">
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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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the entire Open Source community's attention, amidst all this
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chaos of disrupting the software world and the way we saw and
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thought about it. We need to enlighten ourselves with this massive
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change as time again, entire Open Source community has seen the
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rise of yet another project which is called as OpenStack. It is
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believed that OpenStack will have a similar impact on the future
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computing as Linux had on the ‘Post Unix’ era. This is not only
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affecting the softwares, IT industry or the OpenSource world but
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also the Scientific, Commercial and Domestic part of the world.
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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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<listitem>
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<para>On-demand self-service: Users can provision servers and
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networks with little human intervention.</para>
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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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over the network. Many different devices are allowed access
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through standardized mechanisms.</para>
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</listitem>
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<listitem>
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<para>Resource pooling: Multiple users can access clouds that
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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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<para>Elasticity: Provisioning is rapid and scales out or in
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based on need.</para>
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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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paid for by the hour, clouds should optimize resource use and
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control it for the level of service or type of servers such as
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storage or processing.</para>
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</listitem>
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</itemizedlist>
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<para>Cloud computing offers different service models depending on
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the capabilities a consumer may require.</para>
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<itemizedlist>
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<listitem>
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<para>SaaS: Software as a Service. Provides the consumer the
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ability to use the software in a cloud environment, such as
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web-based email for example.</para>
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</listitem>
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<listitem>
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<para>PaaS: Platform as a Service. Provides the consumer the
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ability to deploy applications through a programming language
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or tools supported by the cloud platform provider. An example
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of platform as a service is an Eclipse/Java programming
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platform provided with no downloads required.</para>
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</listitem>
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<listitem>
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<para>IaaS: Infrastructure as a Service. Provides infrastructure
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such as computer instances, network connections, and storage
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so that people can run any software or operating
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system.</para>
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</listitem>
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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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these refer to the deployment model for the cloud. A private cloud
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operates for a single organization, but can be managed on-premise
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or off-premise. A public cloud has an infrastructure that is
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available to the general public or a large industry group and is
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likely owned by a 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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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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virtual and physical servers.</para>
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<para>Cloud computing can help with large-scale computing needs or
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can lead consolidation efforts by virtualizing servers to make
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more use of existing hardware and potentially release old hardware
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from service. Cloud computing is also used for collaboration
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because of its high availability through networked computers.
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Productivity suites for word processing, number crunching, and
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email communications, and more are also available through cloud
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computing. Cloud computing also avails additional storage to the
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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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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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technically, its reach and its 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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public clouds which delivers a massively scalable cloud operating
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system. </para>
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<informaltable class="c20">
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<tbody>
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<tr>
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<td rowspan="1" colspan="1">OpenStack is backed up by a global
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community of technologists, developers, researchers,
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corporations and cloud computing experts.</td>
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<td rowspan="1" colspan="1"><inlinemediaobject>
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<imageobject>
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<imagedata fileref="figures/image11.png"/>
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</imageobject>
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</inlinemediaobject></td>
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</tr>
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</tbody>
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</informaltable>
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</chapter>
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