Category Archive Introducing cloud computing and openstack


Introducing cloud computing and openstack

The demand for individuals who have experience managing this cloud platform is also accelerating. Now is the time to build an exciting and rewarding career managing OpenStack clouds.

As host to some of the world's leading open source cloud projects, The Linux Foundation provides training and networking opportunities to help you advance your career. This course is perfect for IT professionals seeking a high-level overview of OpenStack, and who want to find out if OpenStack is the right solution to meet the IT needs of their organization.

This course also helps anyone who wants to set up a small scale OpenStack test environment to gain experience working with OpenStack. Tipo de curso:. Prerrequisitos Students should have experience with Linux. Sobre este curso Omitir Sobre este curso. Take this course to learn: The origins of OpenStack: Where does it come from and how can you contribute as a developer to the project?

How to deploy a virtual machine from Horizon: Get the steps and components that lead to a working and accessible virtual machine.

Introduction to OpenStack

An introduction to managing OpenStack from the command line. Scaling out your OpenStack cloud by adding SDN, object storage, compute nodes, high availability, and more. Cloud computing as it compares to virtualization Deployment of virtual servers How to install OpenStack with automated tools Command line management tools Scaling out an OpenStack Cloud.

Plan de estudios Omitir Plan de estudios.

Can OpenStack Beat AWS in Price

Final Exam. Conoce a tus instructores The Linux Foundation. Sander van Vugt Linux Expert.These private cloud deployments provide secure and highly efficient way to install, configure and manage pooled computing resources which could be shared among various departments or groups within the organization.

The provisioning and consumption of these pooled resources become much smoother and consumers can use these resources on self-service basis eliminating lengthy provisioning wait times etc. This cloud software platform comprises of various services and components which can configure and manage control hardware pools of computing power, storage, and networking resources throughout a data center. Who is the target audience? Newer Post Older Post Home.

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introducing cloud computing and openstack

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Every busi Avoiding Failure in Business — Why do Companies fail? Subscribe Newsletter.This guide provides security insight into OpenStack deployments. The intended audience is cloud architects, deployers, and administrators. In addition, cloud users will find the guide both educational and helpful in provider selection, while auditors will find it useful as a reference document to support their compliance certification efforts.

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This guide is also recommended for anyone interested in cloud security. Each OpenStack deployment embraces a wide variety of technologies, spanning Linux distributions, database systems, messaging queues, OpenStack components themselves, access control policies, logging services, security monitoring tools, and much more.

It should come as no surprise that the security issues involved are equally diverse, and their in-depth analysis would require several guides. We strive to find a balance, providing enough context to understand OpenStack security issues and their handling, and provide external references for further information.

The guide could be read from start to finish or used like a reference. We briefly introduce the kinds of clouds private, public, and hybrid before presenting an overview of the OpenStack components and their related security concerns in the remainder of the chapter. Throughout the book, we refer to several types of OpenStack cloud users: administratoroperatorand user. We use these terms to identify the level of security access each role has, although, in reality, we understand that varying roles are often held by the same individual.

OpenStack is a key enabler in the adoption of cloud technology and has several common deployment use cases. These are commonly known as Public, Private, and Hybrid models.

What is NFV?

According to NIST, a public cloud is one in which the infrastructure is open to the general public for consumption. OpenStack public clouds are typically run by a service provider and can be consumed by individuals, corporations, or any paying customer.

A public-cloud provider might expose a full set of features such as software-defined networking or block storage, in addition to multiple instance types. By their nature, public clouds are exposed to a higher degree of risk. As a consumer of a public cloud, you should validate that your selected provider has the necessary certifications, attestations, and other regulatory considerations. As a public cloud provider, depending on your target customers, you might be subject to one or more regulations.

Additionally, even if not required to meet regulatory requirements, a provider should ensure tenant isolation as well as protecting management infrastructure from external attacks. At the opposite end of the spectrum is the private cloud. As NIST defines it, a private cloud is provisioned for exclusive use by a single organization comprising multiple consumers, such as business units.

The cloud may be owned, managed, and operated by the organization, a third-party, or some combination of them, and it may exist on or off premises. Private-cloud use cases are diverse and, as such, their individual security concerns vary. NIST defines a community cloud as one whose infrastructure is provisioned for the exclusive use by a specific community of consumers from organizations that have shared concerns for example, mission, security requirements, policy, or compliance considerations.

The cloud might be owned, managed, and operated by one or more of organizations in the community, a third-party, or some combination of them, and it may exist on or off premises. A hybrid cloud is defined by NIST as a composition of two or more distinct cloud infrastructures, such as private, community, or public, that remain unique entities, but are bound together by standardized or proprietary technology that enables data and application portability, such as cloud bursting for load balancing between clouds.

For example, an online retailer might present their advertising and catalogue on a public cloud that allows for elastic provisioning. This would enable them to handle seasonal loads in a flexible, cost-effective fashion. Once a customer begins to process their order, they are transferred to a more secure private cloud that is PCI compliant.Lago starts the presentation with an explanation of the session, and each of the presenters introduce themselves, their companies, and their backgrounds.

Lin takes point to talk a bit about price differences in different geographical regions.

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Lago takes over now to set some assumptions for the comparisons. He provides an overview of the total cost of ownership TCO model used; the presenters are also making available a Google Docs spreadsheet that implements the TCO model and their assumptions. This includes things like hardware costs, power costs, number of full-time employees FTEs used to support OpenStack, etc.

This leads Lago to share a slide that compares various EC2 m4 instances to comparable OpenStack instances; in all cases, the OpenStack instance was far less expensive than EC2 again, this comparison is based on a number of assumptions, such as a quite large cloud.

introducing cloud computing and openstack

Lin also takes a few minutes to talk about how they tried to account for differences in services and guarantees between providers. This may represent a gap in the comparison that unfairly skews the benefits in favor of private clouds. Bonnetot steps forward to cover a third comparison, this time an example for a deep learning use case. This example discusses the use of GPU-equipped instances. The last use case is an archival use case. In this case, the presenters discuss archiving 60TB of data in an object storage service S3 versus Swift.

Lago theorizes that the model may be due to some incorrect assumptions around hardware platforms and hardware configurations, and invites attendees to collaborate with them in fine-tuning the assumptions behind the model.

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At sufficient scale, a private cloud can be far more cost effective than a public cloud, but the risk of using a private cloud is higher more staff required, more training, getting the company to use the cloud, etc.

Managed private cloud increases cost, but can reduce risk. Public cloud offers a far lower risk, but also typically has a much higher cost. Be social and share this post! Original, technical content centered around cloud computing, Kubernetes, Linux, and networking.Discover the benefits of using the open source OpenStack IaaS cloud platform. The idea behind clouds and public Infrastructure as a Service IaaS is certainly not new.

What has changed is the focus on IaaS as a means of private cloud computing to satisfy enterprise computing with sensitive data. Private cloud computing applies the IaaS idea to private infrastructure. Although doing so lacks the economic advantages of public clouds pay-as-you-go servicesit exploits the core principles of cloud computing, with a scalable and elastic infrastructure within a corporate data center.

Let's begin with a quick introduction to IaaS and its architectures, and then jump into the leading open source solution: OpenStack. Cloud computing architectures tend to focus on a common set of resources that are virtualized and exposed to a user on an on-demand basis. These resources include compute resources of varying capability, persistent storage resources, and configurable networking resources to tie them together in addition to conditionally exposing these resources to the Internet.

The architecture of an IaaS implementation see Figure 1 follows this model, with the addition of other elements such as metering to account for usage for billing purposes. The physical infrastructure is abstracted from the application and user through a virtualization layer implemented by a variety of technologies, including hypervisors for platform virtualizationvirtual networks, and storage. View image at full size.

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Although OpenStack is the most popular open source cloud solution available today, it certainly wasn't the first. In fact, OpenStack is a combination of two older solutions developed in both the public and private sectors. Other solutions include OpenNebula an open source cloud computing toolkit and Nimbus another open source toolkit for IaaS clouds.

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OpenStack integrated pieces of the U. OpenStack is a relative newcomer to the IaaS space, its first release having come in late Despite the solution's presumed lack of maturity and given that it has been around for less than two years, OpenStack is now one of the most widely used cloud stacks. Rather than being a single solution, however, OpenStack is a growing suite of open source solutions including core and newly incubated projects that together form a powerful and mature IaaS stack.

As shown in Figure 2OpenStack is built from a core of technologies more than what is shown here, but these represent the key aspects. On the left side is the Horizon dashboard, which exposes a user interface for managing OpenStack services for both users and administrators.

Nova provides a scalable compute platform, supporting the provisioning and management of large numbers of servers and virtual machines VMs; in a hypervisor-agnostic manner. Swift implements a massively scalable object storage system with internal redundancy.

At the bottom are Quantum and Melange, which implement network connectivity as a service. Finally, the Glance project implements a repository for virtual disk images image as a service. As shown in Figure 2, OpenStack is a collection of projects that as a whole provide a complete IaaS solution. Table 1 illustrates these projects with their contributing aspects. Other important aspects include Keystone, which implements an identity service that is crucial for enterprise private clouds to manage access to compute servers, images in Glance, and the Swift object store.

OpenStack is represented by three core open source projects as shown in Figure 2 : Nova computeSwift object storageand Glance VM repository. Its application programming interfaces APIs provide compute orchestration for an approach that attempts to be agnostic not only of physical hardware but also of hypervisors.

For development purposes, you can also use emulation solutions like QEMU. Swift, or OpenStack Object Storage, is a project that provides scalable and redundant storage clusters using standard servers with commodity hard disks. Swift does not represent a file system but instead implements a more traditional object storage system for long-term storage of primarily static data one key usage model is static VM images.

Swift has no centralized controller, which improves and overall scalability. It internally manages replication without redundant array of independent disks across the cluster to improve reliability.Developer reference section: create, delete, modify, and list the database objects (tables, fields, indexes, relations, queries, databases) and set their properties.

Heaps of code, with only limited explanations. See also the Index of VBA Functions - list of the code from all pages on this site. Service packs fix known bugs. The flaws listed below remain unfixed for at least three versions of Access. You must know how to work around them, or they will bite you. Flaws marked "Sample" are demonstrated in AccessFlaws.

Worse still, some give wrong answers, with no indication that the results are incorrect. Microsoft also has an Access 2. You may freely use anything (code, forms, algorithms. We are no longer providing paid support either. For free help, see the Forums section on our Links page. Occasionally, Access users offer to send something in gratitude.

We prefer you give your donation to a child charity that provides education and health for children (such as Compassion. Last update: 22 Oct 2017 Allen Browne's Database and Training no longer accepting clients Where to ask for help For a list of places where you can post questions, see Forums on our Links page.

If you use queries, be aware. If Database or Recordset gives an "unknown type" error, set your References. Search this site Tips for Casual Users If you don't know how to write code, these may help. Table Design What are these objects. Access 95 and later Common errors with Null Access 95 and later Calculating elapsed time All versions Quotation marks within quotes All versions Why can't I append some records.

Trouble-shooting imports All versions Rounding in Access - Round up, round down, rounding time values Access 95 and later Tips for Serious Users Solutions for developers.This would be possible if Apple can incorporate a fingerprint scanner under the glass, something which was too technologically challenging in 2017 but may be feasible now.

After the tremors of 2017, however, Apple may well consolidate in 2018, offering incremental upgrades and perhaps spreading existing features to more models - giving the 4.

However, this was not the iPad mini 5 anticipated, and given that the iPad mini 4 was last updated in September 2015, it's clear that Apple isn't too focused on its smaller tablets and Apple does state that the most popular tablet size is 9. Perhaps spring 2018 will see the introduction of an iPad Mini Pro with upgraded components, a new thinner, tougher aluminium chassis, and the inclusion of a Smart Connector to match that of the other iPad Pro devices.

introducing cloud computing and openstack

Read more: iPad mini 5 new feature rumours iOS 11 was released to the public on 19 September 2017. Like iOS 12 - and Apple's other major OS updates - watchOS 5 will first be unveiled in the summer of 2018, before a public launch in autumn. Unlike the others, however, watchOS 5 probably won't be made available in the form of a public beta.

We suspect that this may be the first watchOS update that won't be able to run on every Apple Watch model, after seeing our first-gen Apple Watch struggle with the watchOS 4 update in 2017. Following its usual pattern, Apple will reveal and demo macOS 10. The last and least heralded of Apple's OSes, tvOS is nevertheless a Pretty Big Deal for everyone with a fourth-gen or 4K Apple TV.

But we've since been informed that it won't make its debut until 2018. Designed in response to the likes of Google Home and Amazon Echo, HomePod is a smart speaker that also sounds brilliant. Apple focused more on sound quality than its smart features in the unveiling of the HomePod, which is an interesting take on things but perhaps we'll discover more about Siri's role in the new device as we approach its release date.

Discover more about the HomePod here. Brand new to the Mac line-up is the iMac Pro, which Apple unveiled at WWDC 2017. It isn't out yet, but Apple still maintains that it will be launched before the end of 2017. The stunning new device is the most powerful Mac ever made, and it's still a sleek all-in-one like the iMacs we know. This time, though, Apple has opted for the Space Grey colouring, complete with a new Space Grey keyboard, mouse and trackpad.

The specs on the iMac Pro are incredible, particularly if you opt for a built-to-order model. Those working with 3D and VR, for example. But more than that, this iMac offers a machine that is going to be powerful enough for whatever is next. You can find out more about what to expect from the iMac Pro here. The Mac Pro is long overdue a refresh, as it hasn't been updated since the launch of the 'trashcan' Pro model in 2013.

The once-futuristic device now looks a little long in the tooth, having been bypassed by generations of Intel chips that never made it into the chassis. In April 2017 Apple broke its silence and discussed the Pro's future with a small group of journalists, first apologising for the lack of updates and then acknowledging that the trashcan design didn't work out the way it had hoped.

And so the machine ended up being very difficult to upgrade. Apple is working on what sounds like a radical redesign of its Mac Pro line.

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