Explains how data virtualization servers work, what techniques to use to optimize access to various data sources and how these products can be applied in different projects. This title outlines the advantages and disadvantages of data virtualization and illustrates how data virtualization should be applied in data warehouse environments.
Terraform has become a key player in the DevOps world for defining, launching, and managing infrastructure as code (IAC) across a variety of cloud and virtualization platforms, including Azure, Google Cloud, DigitalOcean, and others. The updated second edition of this hands-on guide is fastest way to get up and running with Terraform.
Discover why Vagrant is a must-have tool for thousands of developers and ops engineers. This hands-on guide shows you how to use this open source software to build a virtual machine for any purpose?including a completely sandboxed, fully provisioned development environment right on your desktop. Vagrant creator Mitchell Hashimoto shows you how to share a virtual machine image with members of your team, set up a separate virtualization for each project, and package virtual machines for use by others. This book covers the V1 (1.0.x) configuration syntax running on top of a V2 (1.1+) core, the most stable configuration format running on the latest core. * Build a simple virtual machine with just two commands and no configuration * Create a development environment that closely resembles production * Automate software installation and management with shell scripts, Chef, or Puppet * Set up a network interface to access your virtual machine from any computer * Use your own editor and browser to develop and test your applications * Test complicated multi-machine clusters with a single Vagrantfile * Change Vagrant?s default operating system to match your production OS * Extend Vagrant features with plugins, including components you build yourself
Publisher´s Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. ´´The promise of cloud computing is here. These pages provide the ´eyes wide open´ insights you need to transform your business.´´ --Christopher Crowhurst, Vice President, Strategic Technology, Thomson Reuters A Down-to-Earth Guide to Cloud Computing Cloud Computing: A Practical Approach provides a comprehensive look at the emerging paradigm of Internet-based enterprise applications and services. This accessible book offers a broad introduction to cloud computing, reviews a wide variety of currently available solutions, and discusses the cost savings and organizational and operational benefits. You´ll find details on essential topics, such as hardware, platforms, standards, migration, security, and storage. You´ll also learn what other organizations are doing and where they´re headed with cloud computing. If your company is considering the move from a traditional network infrastructure to a cutting-edge cloud solution, you need this strategic guide. Cloud Computing: A Practical Approach covers: * Costs, benefits, security issues, regulatory concerns, and limitations * Service providers, including Google, Microsoft, Amazon, Yahoo, IBM, EMC/VMware, Salesforce.com, and others * Hardware, infrastructure, clients, platforms, applications, services, and storage * Standards, including HTTP, HTML, DHTML, XMPP, SSL, and OpenID * Web services, such as REST, SOAP, and JSON * Platform as a Service (PaaS), Software as a Service (SaaS), and Software plus Services (S+S) * Custom application development environments, frameworks, strategies, and solutions * Local clouds, thin clients, and virtualization * Migration, best practices, and emerging standards
Continuous Delivery shows how tocreate fully automated, repeatable, and reliable processes for rapidly moving changes through build, deploy, test, and release. Using these techniques, software organizations are getting critical fixes and other new releases into production in hours - sometimes even minutes - evenin large projects with complex code bases. Jez Humble and David Farley begin by presenting the high-level principles and practices required to succeed with regular, repeatable, low-risk releases. Next, they introduce the ´´deployment pipeline,´´ an automated process for managing all changes, from check-in to release. Finally, they discuss the ´´ecosystem´´ needed to support deployment pipelines, from infrastructure to data management and governance. The authors introduce many state-of-the-art techniques, including in-production monitoring and tracing, dependency management, and the use of virtualization. For each, they review key issues, demonstrate how to mitigate risks, and identify best practices. Coverage includes · Overcoming ´´anti-patterns´´ that slow down releases and reduce quality · Automating all facets of configuration management and testing · Implementing deployment pipelines at team and organizational levels · Scripting highly-effective automated build and deployment processes · Triggering automated processes whenever a change is made · Automating acceptance testing, from analysis to implementation · Testing capacity and other non-functional requirements · Utilizing continuous deployment, rollbacks, and zero-downtime releases · Managing infrastructure, data, components, dependencies, and versions · Navigating risk management, compliance, and other obstacles Whether you´re a developer, architect, tester, or manager, this book will help you move from idea to release faster than ever - so you can deliver far more value, far more rapidly. Product Description Winner of the 2011 Jolt Excellence Award! Getting software released to users is often a painful, risky, and time-consuming process. This groundbreaking new book sets out the principles and technical practices that enable rapid, incremental delivery of high quality, valuable new functionality to users. Through automation of the build, deployment, and testing process, and improved collaboration between developers, testers, and operations, delivery teams can get changes released in a matter of hours- sometimes even minutes-no matter what the size of a project or the complexity of its code base. Jez Humble and David Farley begin by presenting the foundations of a rapid, reliable, low-risk delivery process. Next, they introduce the ´´deployment pipeline,´´ an automated process for managing all changes, from check-in to release. Finally, they discuss the ´´ecosystem´´ needed to support continuous delivery, from infrastructure, data and configuration management to governance. The authors introduce state-of-the-art techniques, including automated infrastructure management and data migration, and the use of virtualization. For each, they review key issues, identify best practices, and demonstrate how to mitigate risks. Coverage includes . Automating all facets of building, integrating, testing, and deploying software . Implementing deployment pipelines at team and organizational levels . Improving collaboration between developers, testers, and operations . Developing features incrementally on large and distributed teams . Implementing an effective configuration management strategy . Automating acceptance testing, from analysis to implementation . Testing capacity and other non-functional requirements . Implementing continuous deployment and zero-downtime releases . Managing infrastructure, data, components and dependencies . Navigating risk management, compliance, and auditing Whether you´re a developer, systems administrator, tester, or manager, this book will help your organization move from idea to release faster than ever-so you can deliver value to your business rapidly and reliably. Backcover Getting software released to users is often a painful, risky, and time-consuming process. This groundbreaking new book sets out the principles and technical practices that enable rapid, incremental delivery of high quality, valuable new functionality to users. Through automation of the build, deployment, and testing process, and improved collaboration between developers, testers, and operations, delivery teams can get changes released in a matter of hours-
Testing at Google Scale Product Description 2012 Jolt Award finalist! Pioneering the Future of Software Test Do you need to get it right, too? Then, learn from Google . Legendary testing expert James Whittaker, until recently a Google testing leader, and two top Google experts reveal exactly how Google tests software, offering brand-new best practices you can use even if you?re not quite Google?s size? yet! Breakthrough Techniques You Can Actually Use Discover 100% practical, amazingly scalable techniques for analyzing risk and planning tests?thinking like real users?implementing exploratory, black box, white box, and acceptance testing?getting usable feedback?tracking issues?choosing and creating tools?testing ?Docs & Mocks,? interfaces, classes, modules, libraries, binaries, services, and infrastructure?reviewing code and refactoring?using test hooks, presubmit scripts, queues, continuous builds, and more. With these techniques, you can transform testing from a bottleneck into an accelerator ?and make your whole organization more productive! Features + Benefits Presents pioneering testing techniques that can help any company moving to the cloud Shows how to achieve web-level scale for integration and system testing Offers expert guidance on managing end-to-end testing, including superior automation strategies Foreword by Alberto Savoia xiii Foreword by Patrick Copeland xvii Preface xxiii Chapter 1: Introduction to Google Software Testing 1 Quality?Test 5 Roles 6 Organizational Structure 8 Crawl, Walk, Run 10 Types of Tests 12 Chapter 2: The Software Engineer in Test 15 The Life of an SET 17 Development and Test Workflow 17 Who Are These SETs Anyway? 22 The Early Phase of a Project 22 Team Structure 24 Design Docs 25 Interfaces and Protocols 27 Automation Planning 28 Testability 29 SET Workflow: An Example 32 Test Execution 40 Test Size Definitions 41 Use of Test Sizes in Shared Infrastructure 44 Benefits of Test Sizes 46 Test Runtime Requirements 48 Case 1: Change in Common Library 52 Test Certified 54 An Interview with the Founders of the Test Certified Program 57 Interviewing SETs 62 An Interview with Tool Developer Ted Mao 68 An Interview with Web Driver Creator Simon Stewart 70 Chapter 3: The Test Engineer 75 A User-Facing Test Role 75 The Life of a TE 76 Test Planning 79 Risk 97 Life of a Test Case 108 Life of a Bug 113 Recruiting TEs 127 Test Leadership at Google 134 Maintenance Mode Testing 137 Quality Bots Experiment 141 BITE Experiment 153 Google Test Analytics 163 Free Testing Workflow 169 External Vendors 173 An Interview with Google Docs TE Lindsay Webster 175 An Interview with YouTube TE Apple Chow 181 Chapter 4: The Test Engineering Manager 187 The Life of a TEM 187 Getting Projects and People 189 Impact 191 An Interview with Gmail TEM Ankit Mehta 193 An Interview with Android TEM Hung Dang 198 An Interview with Chrome TEM Joel Hynoski 202 The Test Engineering Director 206 An Interview with Search and Geo Test Director Shelton Mar 207 An Interview with Engineering Tools Director Ashish Kumar 211 An Interview with Google India Test Director Sujay Sahni 214 An Interview with Engineering Manager Brad Green 219 An Interview with James Whittaker 222 Chapter 5: Improving How Google Tests Software 229 Fatal Flaws in Google´s Process 229 The Future of the SET 231 The Future of the TE 233 The Future of the Test Director and Manager 234 The Future of Test Infrastructure 234 In Conclusion 235 Appendix A: Chrome OS Test Plan 237 Overview of Themes 237 Risk Analysis 238 Per-Build Baseline Testing 239 Per-LKG Day Testing 239 Per-Release Testing 239 Manual Versus Automation 240 Dev Versus Test Quality Focus 240 Release Channels 240 User Input 241 Test Case Repositories 241 Test Dashboarding 241 Virtualization 241 Performance 242 Stress, Long-Running, and Stability 242 Test Execution Framework (Autotest) 242 OEMs 242 Hardware Lab 242 E2E Farm Automation 243 Testing the Browser AppManager 243 Browser Testability 243 Hardware 244 Timeline 244 Primary Test Drivers 246 Relevant Documents 246 Appendix B: Test Tours for Chrome 247 The Shopping Tour 247 The Student Tour 248 Suggested Areas to Test 248 The International Calling Tour 249 Suggested Areas to Test 249 The Landmark Tour 249 Suggested Landmarks in Chrome 249 The All Nighter Tour 250 Suggested Areas to Test 250 The Artisan´s Tour 251 Tools in Chrome 251 The Bad Neighborhood Tour 251 Bad Neighborhoods in Chrome OS 251 The Personalization Tour 252 Ways to Customize
This book provides an in-depth insight into the new architectures and concepts of current Citrix XenDesktop and XenApp technologies for central provisioning of desktops and applications. It is aimed both at newcomers to the Citrix virtualization world and at those upgrading from previous versions. All the necessary steps for the creation of a design, and the development and operation of a complete, scalable virtualization environment are discussed in a detailed and practical manner. Valuable advice and comprehensive background information also feature in this solution-oriented compendium, making it an indispensable companion for IT-solution architects, consultants and administrators.
This updated edition of Michael W. Lucas´ definitive volume on FreeBSD-based systems adds coverage of modern disks, the ZFS filesystem IPv6, redesigned jail and packaging systems, and virtualization, among dozens of new features added in the last 10 years. FreeBSD is the muscle behind companies like Netflix and EMC. Any place where someone does heavy lifting on the Internet, you´ll find FreeBSD. This newly revised edition of Absolute FreeBSD brings FreeBSD´s strengths to bear on your problems and covers FreeBSD´s newest features, all in the inimitable style that has made author Michael W. Lucas´ system administration books so popular. Any computer system is only as good as the system administrator´s knowledge. Absolute FreeBSD teaches you everything you need to know about managing FreeBSD systems, from installation, configuration, and taking the system from ´´just working´´ to ´´working well.´´ A cohesive focus on service delivery and best practice means that you can apply much of the book to other operating systems. Absolute FreeBSD dives deep into server management, taking you beyond just making things work and into understanding why they work. You´ll learn: How to best install FreeBSD to meet your needs Which filesystem to use in your environment How to back up and restore critical data How to tweak the kernel, and when not to Network configuration, from activating interfaces to selecting congestion control algorithms How to manage UFS, ZFS, and other critical filesystems FreeBSD´s software packaging system, including how to build your own package repository How and when to upgrade Techniques to build your own FreeBSD Advanced security features like blacklistd and packet filtering How to monitor and adjust performance Container-style virtualization with jails Diskless systems Panic management and bug reporting With Absolute FreeBSD readers will get the solid introduction they need while fans of the earlier editions will expand their skills even further.
Mit diesem Buch erlangen Sie Grundlagenwissen im Bereich der Computernetzwerke Dieses Buch bietet Ihnen einen kompakten Überblick über das Thema Computernetzwerke. Sein Aufbau orientiert sich an den Schichten der etablierten Referenzmodelle und behandelt für jede Schicht die Geräte und die wichtigsten Protokolle. Zu den Protokollen gehören auch Netzwerktechnologien wie Ethernet, WLAN, Bluetooth usw. und die Übertragungsmedien. Das Ziel des Buches ist es nicht, eine Auflistung von Algorithmen zu schaffen, sondern eine an der Realität orientierte Beschreibung zu liefern, die die wichtigsten Technologien in einem klaren Zusammenhang behandelt. Das Buch soll dem Leser ein fundiertes Verständnis von Computernetzwerken in kompakter Form vermitteln. Das Besondere dabei ist die zweisprachige Darstellung des Inhalts. In zwei Spalten stehen der deutsche und der englische Text nebeneinander, so dass der Leser gleichzeitig seine Sprachkenntnisse und sein Fachvokabular verbessern kann. Das Buch richtet sich vor allem an Studierende der Informatik und an alle am Thema Interessierten. Diese Inhalte vermittelt der Autor dem Leser Christian Baun vermittelt dem Leser in seinem Buch alle wichtigen Grundlagen der Computernetzwerke. Dazu gehören unter anderen: · Grundlagen der Informations- und Netzwerktechnik · Grundlagen der Computervernetzung · Protokolle und Protokollschichten · Bitübertragungsschicht · Sicherungsschicht · Vermittlungsschicht · Transportschicht · Anwendungsschicht · Netzwerkvirtualisierung · Funktionsweise des OSI-Referenzmodells · Kommandozeilenwerkzeuge Mithilfe dieser Inhalte erhält der Leser einen kompakten Einblick in die Thematik. --- This book presents a compact, yet detailed overview and introduction to computer networks and their components. The book is written in both English and German, arranged in side-by-side columns. This feature helps readers improve and broaden their language skills, and gain familiarity with the specialized vocabulary of computer science and networking at the same time. The book opens with a review of computer science basics, including the building blocks of data, file and storage dimensions, and Unicode. The fundamentals of computer networking are presented, with sections on the dimensions of different types of networks, data transmission, and media access control. Protocols and reference models are explained, followed by chapters on the functional layers of networks: Physical Layer, Data Link Layer, Network Layer, Transport Layer, and Application Layer. Additional topics covered include: · Computer network topologies · Bandwidth and latency · Network virtualization The book includes a collection of command line tools for network configuration and for analyzing network-related issues. The book concludes with a list of technical terms, and an extensive glossary, both presented in side-by-side columns, in English and German. Requiring little to no technical background, Computer Networks - Computernetze benefits college-level students interested in computer science. It is especia