diff --git a/module001-ch001-intro-text.xml b/module001-ch001-intro-text.xml index c85b5fa3..dd975d52 100644 --- a/module001-ch001-intro-text.xml +++ b/module001-ch001-intro-text.xml @@ -1,47 +1,25 @@ - Introduction To OpenStack - 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. - 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. - These are the compelling features of a cloud: + Introduction to OpenStack + 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. + 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. + The compelling features of a cloud are: - On-demand self-service: Users can provision servers and - networks with little human intervention. + 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. Network access: Any computing capabilities are available @@ -53,14 +31,16 @@ serve other consumers according to demand. - Elasticity: Provisioning is rapid and scales out or in + Elasticity: Provisioning is rapid and scales out or is based on need. - 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. + 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. Cloud computing offers different service models depending on @@ -85,12 +65,12 @@ system. - 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. + 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. 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 @@ -106,9 +86,9 @@ 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. - Let’s take a peek into OpenStack, see what it means - technically, its reach and its impact on the entire world. - OpenStack is an Open source software for building private and + When you explore OpenStack and see what it means technically, + you can see its reach and impact on the entire world. + OpenStack is an open source software for building private and public clouds which delivers a massively scalable cloud operating system.