Mastering Ansible

Author: Jesse Keating

Publisher: Packt Publishing Ltd

ISBN: 1787126773

Category: Computers

Page: 310

View: 834

Master the ins and outs of advanced operations with Ansible About This Book Learn how to extend Ansible with custom modules, plugins, and inventory sources Utilize advanced Ansible features to orchestrate rolling updates with little to no service disruptions An up-to-date book that brings to light the newly added features in Ansible 2.x Who This Book Is For This book is for Ansible developers and operators who have an understanding of the core elements and applications but are now looking to enhance their skills in applying automation using Ansible. What You Will Learn Gain an in-depth understanding of how Ansible works under the covers Fully automate the Ansible playbook executions with encrypted data Access and manipulate variable data within playbooks Use Blocks to construct failure recovery or cleanup Explore the Playbook debugger and Ansible Console Troubleshoot unexpected behavior effectively Work with cloud infrastructure providers and container systems Develop custom modules, plugins, and dynamic inventory sources In Detail This book provides you with the knowledge you need to understand how Ansible 2.1 works at a fundamental level and leverage its advanced capabilities. You'll learn how to encrypt Ansible content at rest and decrypt data at runtime. You will master the advanced features and capabilities required to tackle the complex automation challenges of today and beyond. You will gain detailed knowledge of Ansible workflows, explore use cases for advanced features, craft well thought out orchestrations, troubleshoot unexpected behaviour, and extend Ansible through customizations. Finally, you will discover the methods used to examine and debug Ansible operations, helping you to understand and resolve issues. By the end of the book, the readers will be able to unlock the true power of the Ansible automation engine and will tackle complex real world actions with ease. Style and approach This clear, practical guide illustrates the advanced functionalities of Ansible, its system architecture, and design aspects that will help you to master Ansible with ease.

Mastering Ansible

Author: Ernest Thomas

Publisher: Createspace Independent Publishing Platform

ISBN: 9781974300228

Category:

Page: 90

View: 3454

Ansible is an IT automation tool that lets you manage your Infrastructure as a Code. It helps you deploy your applications and manage configurations, thus making life easier. Ansible, in most ways, is self sufficient to address most of your requirements. Ideally, standard modules, libraries, or plugins are used to automate a given IT platform. Customizing Ansible can be done by custom module and plugin development. This book shows you how to automate most of the tasks in your IT environment, thus minimizing the need to manually perform scheduled tasks and extend your Ansible implementation by developing customized modules and plugins. You'll begin by getting an understanding of the fundamental aspects of extending the Ansible framework, such as custom functions and reusable modules. You'll then progress to building custom plugins and extensions using the fundamental building blocks explained earlier. We'll also show you how to automate some tasks using scripts. Finally, we'll demonstrate how these extensions can be seamlessly integrated into existing Ansible installations and explain how to conduct unit testing on these extensions to ensure they work as desired.

Mastering CoreOS

Author: Sreenivas Makam

Publisher: Packt Publishing Ltd

ISBN: 178528830X

Category: Computers

Page: 382

View: 9060

Create production CoreOS clusters and master the art of deploying Container-based microservices About This Book Confidently deploy distributed applications and effectively manage distributed infrastructure using Containers and CoreOS Build secure, scalable CoreOS clusters to deploy distributed applications using open source technologies and industry best practices Every concept and technology in this book is illustrated with practical examples that can be used in both development and production environments. Who This Book Is For This book is intended for Cloud application developers and Cloud infrastructure administrators. If you are looking to deploy a CoreOS cluster or you already have a CoreOS cluster that you want to manage better in terms of performance, security, and scaling, then this book is perfect for you. To follow the hands-on stuff, you need to have a Google and an AWS Cloud account and be able to run CoreOS VMs on your machine. A basic understanding of public and private clouds, Containers, Docker, Linux, and CoreOS is required. What You Will Learn Install CoreOS on a VM, on the Cloud, and bare metal, and find out how to keep your cluster secure and up to date Configure and troubleshoot key CoreOS services, such as etcd, systemd, and fleet, for distributed application deployment Study container networking using CoreOS Flannel and other solutions, such as Docker libnetwork, Weave, and Calico Explore the container filesystem and container volume management using Docker volume, NFS, GlusterFS, and Flocker Get to know the internals of container technologies such as Docker, Rkt, and Container orchestration using Openstack, Kubernetes and Docker native solutions Troubleshoot CoreOS cluster and Containers using monitoring and logging tools and master production techniques such as staging, security, and automation In Detail CoreOS makes Google and Amazon-style Cloud infrastructure available for anyone building their own private Cloud. This book covers the CoreOS internals and the technologies used in the deployment of container-based distributed applications. It starts with an overview of CoreOS and distributed application development while sharing knowledge on related technologies. Critical CoreOS services and networking and storage considerations for CoreOS are covered next. In latter half of the book, you will learn about Container runtime systems such as Docker and Rkt and Container Orchestration using Kubernetes. You will also find out about the integration of popular orchestration solutions such as OpenStack, the AWS Container service, and the Google Container Engine with CoreOS and Docker. Lastly, we cover troubleshooting as well as production considerations. Style and approach This is an easy-to–follow, comprehensive guide that covers both basic and advanced concepts. All topics are illustrated with practical examples that can be used in both simulation and production environments.

Mastering CentOS 7 Linux Server

Author: Mohamed Alibi,Bhaskarjyoti Roy

Publisher: Packt Publishing Ltd

ISBN: 1785285106

Category: Computers

Page: 298

View: 4919

Configure, manage, and secure a CentOS 7 Linux server to serve a variety of services provided in a sustainable computer's infrastructure. About This Book Learn how to efficiently set up and manage a Linux server using one of the best suited technologies for this purpose, CentOS 7 Personalize your Linux server and familiarize yourself with the latest tools and utilities setup provided by the new CentOS distribution Follow a step-by-step tutorial through the configuration of the requested services with the capacity to personalize them as per your needs Who This Book Is For If you are a Linux system administrator with an intermediate administration level, this is your opportunity to master the brand new distribution of CentOS. If you wish to possess a fully sustainable Linux server, with all its new tools and tweaks, that serves a variety of services to your users and customers, this book is ideal for you. It is your ticket to easily adapt to all the changes made in the latest shift. What You Will Learn Manage CentOS 7 users, groups, and root access privileges Enhance the server's security through its firewall and prevent the most common attacks from penetrating or disabling the server Explore and implement the common, useful services that a CentOS 7 server can provide Monitor your server infrastructure for system or hardware issues Create and configure a virtual machine using virtualization technologies Implement a cloud computing solution on a single node system Get an introduction to the configuration management tools and their usage Discover the importance of the tools that provide remote connection, server service security, and system and process monitoring tools In Detail Most server infrastructures are equipped with at least one Linux server that provides many essential services, both for a user's demands and for the infrastructure itself. Setting up a sustainable Linux server is one of the most demanding tasks for a system administrator to perform. However, learning multiple, new technologies to meet all of their needs is time-consuming. CentOS 7 is the brand new version of the CentOS Linux system under the RPM (Red Hat) family. It is one of the most widely-used operating systems, being the choice of many organizations across the world. With the help of this book, you will explore the best practices and administration tools of CentOS 7 Linux server along with implementing some of the most common Linux services. We start by explaining the initial steps you need to carry out after installing CentOS 7 by briefly explaining the concepts related to users, groups, and right management, along with some basic system security measures. Next, you will be introduced to the most commonly used services and shown in detail how to implement and deploy them so they can be used by internal or external users. Soon enough, you will be shown how to monitor the server. We will then move on to master the virtualization and cloud computing techniques. Finally, the book wraps up by explaining configuration management and some security tweaks. All these topics and more are covered in this comprehensive guide, which briefly demonstrates the latest changes to all of the services and tools with the recent shift from CentOS 6 to CentOS 7. Style and approach This is a detailed and in-depth guide to help you administrate CentOS 7 for the usage of your server's infrastructure and also for personal network security. Each section shows a list of tools and utilities that are useful to perform the required task, in an easy to understand manner.

Das DevOps-Handbuch

Teams, Tools und Infrastrukturen erfolgreich umgestalten

Author: Gene Kim,Jez Humble,Patrick Debois,John Willis

Publisher: O'Reilly

ISBN: 3960101244

Category: Computers

Page: 432

View: 6679

Mehr denn je ist das effektive Management der IT entscheidend für die Wettbewerbsfähigkeit von Organisationen. Viele Manager in softwarebasierten Unternehmen ringen damit, eine Balance zwischen Agilität, Zuverlässigkeit und Sicherheit ihrer Systeme herzustellen. Auf der anderen Seite schaffen es High-Performer wie Google, Amazon, Facebook oder Netflix, routinemäßig und zuverlässig hundertoder gar tausendmal pro Tag Code auszuliefern. Diese Unternehmen verbindet eins: Sie arbeiten nach DevOps-Prinzipien. Die Autoren dieses Handbuchs folgen den Spuren des Romans Projekt Phoenix und zeigen, wie die DevOps-Philosophie praktisch implementiert wird und Unternehmen dadurch umgestaltet werden können. Sie beschreiben konkrete Tools und Techniken, die Ihnen helfen, Software schneller und sicherer zu produzieren. Zudem stellen sie Ihnen Maßnahmen vor, die die Zusammenarbeit aller Abteilungen optimieren, die Arbeitskultur verbessern und die Profitabilität Ihres Unternehmens steigern können. Themen des Buchs sind: Die Drei Wege: Die obersten Prinzipien, von denen alle DevOps-Maßnahmen abgeleitet werden.Einen Ausgangspunkt finden: Eine Strategie für die DevOps-Transformation entwickeln, Wertketten und Veränderungsmuster kennenlernen, Teams schützen und fördern.Flow beschleunigen: Den schnellen Fluss der Arbeit von Dev hin zu Ops ermöglichen durch eine optimale Deployment-Pipeline, automatisierte Tests, Continuous Integration und Continuous Delivery.Feedback verstärken: Feedback-Schleifen verkürzen und vertiefen, Telemetriedaten erzeugen und Informationen unternehmensweit sichtbar machen.Kontinuierliches Lernen ermöglichen: Eine Just Culture aufbauen und ausreichend Zeit reservieren, um das firmenweite Lernen zu fördern.

Mastering Python Networking

Your one-stop solution to using Python for network automation, DevOps, and Test-Driven Development, 2nd Edition

Author: Eric Chou

Publisher: Packt Publishing Ltd

ISBN: 1789130263

Category: Computers

Page: 466

View: 6490

Master the art of using Python for a diverse range of network engineering tasks Key Features Explore the power of Python libraries to tackle difficult network problems efficiently and effectively Use Python for network device automation, DevOps, and software-defined networking Become an expert in implementing advanced network-related tasks with Python Book Description Networks in your infrastructure set the foundation for how your application can be deployed, maintained, and serviced. Python is the ideal language for network engineers to explore tools that were previously available to systems engineers and application developers. In this second edition of Mastering Python Networking, you’ll embark on a Python-based journey to transition from traditional network engineers to network developers ready for the next-generation of networks. This book begins by reviewing the basics of Python and teaches you how Python can interact with both legacy and API-enabled network devices. As you make your way through the chapters, you will then learn to leverage high-level Python packages and frameworks to perform network engineering tasks for automation, monitoring, management, and enhanced security. In the concluding chapters, you will use Jenkins for continuous network integration as well as testing tools to verify your network. By the end of this book, you will be able to perform all networking tasks with ease using Python. What you will learn Use Python libraries to interact with your network Integrate Ansible 2.5 using Python to control Cisco, Juniper, and Arista eAPI network devices Leverage existing frameworks to construct high-level APIs Learn how to build virtual networks in the AWS Cloud Understand how Jenkins can be used to automatically deploy changes in your network Use PyTest and Unittest for Test-Driven Network Development Who this book is for Mastering Python Networking is for network engineers and programmers who want to use Python for networking. Basic familiarity with Python programming and networking-related concepts such as Transmission Control Protocol/Internet Protocol (TCP/IP) will be useful.

Die Liebe ist eine heimtückische Herausforderung

Roman

Author: Andrew Clover

Publisher: Knaur eBook

ISBN: 3426422743

Category: Fiction

Page: 400

View: 8304

Für Polly ist Arthur der Ikea-Schrank unter den Männern – auf Fotos sieht er gut aus, aber wenn man ihn bittet, etwas zu halten, bricht er zusammen. Die beiden sind seit zehn Jahren verheiratet und haben drei reizende, aber nervenaufreibende Kinder. Ihre Gefühle füreinander wurden längst im Familienalltag und unter Wäschebergen erstickt, in Geschirrspülmaschinen ertränkt und in Familienkalendern totorganisiert. Als Arthur für ein Magazin über den Online-Kurs "Learn Love In A Week" schreibt, fragt er sich, ob seine Ehe noch eine Chance hat. Und wenn man die Liebe tatsächlich in einer Woche lernen kann, verliebt man sich dann auch noch einmal in den eigenen Partner?

Hitchhiker's Guide für Python

Best Practices für Programmierer

Author: Kenneth Reitz,Tanya Schlusser

Publisher: O'Reilly

ISBN: 3960882424

Category: Computers

Page: 336

View: 9879

Sind Sie bereit, ein echter Pythonista zu werden? Dann wird dieses Buch Ihr treuer Begleiter. Es bietet geballtes Insider-Know-how zu Best Practices und den bevorzugten Werkzeugen der Python-Community. Sie werden Ihre Python-Kenntnisse entscheidend verbessern – ob Sie einfach nur neugierig sind, als Normalsterblicher zu Open-Source-Projekten beitragen oder ein Unternehmen rund um Python aufbauen möchten. Dieses Buch wurde im Rahmen eines Gemeinschaftsprojekts von über einhundert Mitgliedern der Python-Community geschrieben. In Teil 1 geht es um das Einrichten der Python-Umgebung (Interpreter, Python-Installation, Texteditor, IDE). Dann tauchen Sie in Beispiel-Code ein, der den Python-Stil mustergültig umsetzt. Teil 3 macht Sie mit Bibliotheken vertraut, die von der Python-Community bevorzugt genutzt werden. - Entwickeln Sie besseren Python-Code, indem Sie Stil, Konventionen, Idiome und Fallstricke kennenlernen. - Sehen Sie sich exzellente Open-Source-Codebeispiele ausgewählter Python-Bibliotheken an. - Studieren Sie Best Practices für die Paketierung und Distribution von Python-Code. - Erkunden Sie Pythons Bibliotheken für die Benutzer-Interaktion – von Konsolenanwendungen über GUIs bis hin zu Webapplikationen. - Lernen Sie Tools für die Systemadministration sowie das Interfacing mit C- und C++-Bibliotheken kennen und verbessern Sie die Geschwindigkeit von Python. - Arbeiten Sie mit Netzwerk-Bibliotheken für asynchrone Aktionen, Serialisierung und Kryptografie. - Lernen Sie Bibliotheken zur Datenpersistenz und -manipulation kennen, darunter auch Werkzeuge zur Bild- und Audioverarbeitung. Prägnant und meinungsstark nimmt Sie der Hitchhiker's Guide mit auf eine Pro-Tour durch das Python-Universum. Raymond Hettinger, Python Core Developer

Softwareentwicklung von Kopf bis Fuss

Author: Dan Pilone,Russ Miles

Publisher: O'Reilly Germany

ISBN: 395561946X

Category: Computers

Page: 496

View: 4676

Was lernen Sie mit diesem Buch? Haben Sie sich schon einmal gefragt, was es mit testgetriebener Entwicklung auf sich hat? Oder auf welcher Basis es die richtig guten Consultants schaffen, gewaltige Stundensätze zu kassieren? Vielleicht sind Sie auch gerade an dem Punkt, an dem Sie Ihre Builds automatisieren wollen, Ihren Code in eine Versionskontrolle füttern, einem Refactoring unterziehen oder mit ein paar Entwurfsmustern anreichern wollen. Egal: Wenn Sie mit diesem Buch fertig sind, werden Sie ganz selbstverständlich Ihre Burndown-Rate verfolgen, den Durchsatz Ihres Teams berücksichtigen und sich erfolgreich Ihren Weg durch Anforderungen, Entwurf, Entwicklung und Auslieferung iterieren. Wieso sieht dieses Buch so anders aus? Wir gehen davon aus, dass Ihre Zeit zu kostbar ist, um mit neuem Stoff zu kämpfen. Statt Sie mit Bleiwüstentexten langsam in den Schlaf zu wiegen, verwenden wir für Softwareentwicklung von Kopf bis Fuß ein visuell und inhaltlich abwechslungsreiches Format, das auf Grundlage neuster Forschungsergebnisse im Bereich der Kognitionswissenschaft und der Lerntheorie entwickelt wurde. Wir wissen nämlich, wie Ihr Gehirn arbeitet.

Zeitmanagement für Systemadministratoren

Author: Tom Limoncelli

Publisher: Springer DE

ISBN: 9783897214651

Category: Computer networks

Page: 206

View: 5810

Sie sind gern Sysadmin, klar. Sie haben Ihr Hobby zum Beruf gemacht. Es stort Sie nicht, bis spat in der Nacht vorm Rechner zu sitzen, das machen Sie in Ihrem Privatleben auch ofter mal. Als Sysadmin mussen Sie viele Projekte gleichzeitig managen und haben eine unubersichtliche Menge verschiedener, kleinteiliger Aufgaben zu bewaltigen. Und das bei standigen Unterbrechungen durch Chefs oder Kollegen, die schnell etwas wissen wollen oder dringend Hilfe brauchen. All das in der regularen Arbeitszeit zu schaffen, ist nicht ohne. Der Autor dieses Buchs, Thomas A. Limoncelli, ist selbst Systemadministrator und kennt die Anforderungen an den Beruf genau. Zeitmanagement fur Systemadministratoren konzentriert sich auf die Techniken und Strategien, die Ihnen helfen, Ihre taglichen Aufgaben als Sysadmin zu bewaltigen und gleichzeitig kritische Situationen in den Griff zu bekommen, die unvorhergesehen auf den Plan treten. Unter anderem lernen Sie, wie Sie mit Unterbrechungen am besten umgehen Ihren Kalender effektiv fuhren Routinen fur wiederkehrende Aufgaben entwickeln Prioritaten klug setzen Zeitfresser eliminieren Arbeitsprozesse automatisieren und dokumentieren"

Entwurfsmuster von Kopf bis Fuß

Author: Eric Freeman,Elisabeth Robson,Kathy Sierra,Bert Bates

Publisher: O'Reilly Media

ISBN: 3955619877

Category: Computers

Page: 696

View: 8786

Jetzt aktuell zu Java 8: Dieses Buch ist ein moderner Klassiker zum Thema Entwurfsmuster. Mit dem einzigartigen Von Kopf bis Fuß-Lernkonzept gelingt es den Autoren, die anspruchsvolle Materie witzig, leicht verständlich und dennoch gründlich darzustellen. Jede Seite ist ein Kunstwerk für sich, mit vielen visuellen Überraschungen, originellen Comic-Zeichnungen, humorvollen Dialogen und geistreichen Selbstlernkontrollen. Spätestens, wenn es mal wieder heißt "Spitzen Sie Ihren Bleistift", wird dem Leser klar, dass bei diesem Buch sein Mitmachen gefragt ist. Das ist nicht nur unterhaltsam, sondern auch effektiv: Komplexe Sachverhalte lassen sich nach Erkenntnis der modernen Lernwissenschaft am gründlichsten über mehrere verschiedene Kanäle verstehen. Das Buch verspricht dem Leser daher nicht nur Spaß beim Lernen, er wird nach der Lektüre auch die Herausforderungen des Software-Designs meistern können.

Continuous Delivery

Der pragmatische Einstieg

Author: Eberhard Wolff

Publisher: dpunkt.verlag

ISBN: 3864919312

Category: Computers

Page: 282

View: 1062

Continuous Delivery ermöglicht es, Software viel schneller und mit wesentlich höherer Zuverlässigkeit in Produktion zu bringen, als es bisher möglich war. Grundlage dafür ist eine Continuous-Delivery-Pipeline, die das Ausrollen der Software weitgehend automatisiert und so einen reproduzierbaren, risikoarmen Prozess für die Bereitstellung neuer Releases bietet. Dieses Buch macht Sie mit dem Aufbau einer Continuous-Delivery-Pipeline vertraut und erklärt, welche Technologien Sie dazu einsetzen können. Dabei lernen Sie u.a. folgende Themen kennen: • Infrastruktur-Automatisierung mit Chef, Docker und Vagrant • Automatisierung von Builds und Continuous Integration • Akzeptanztests, Kapazitätstests, exploratives Testen • Einführung von Continuous Delivery im Unternehmen • Continuous Delivery und DevOps • Auswirkungen auf die Softwarearchitektur Als praktisches Beispiel wird ein konkreter Technologie- Stack vorgestellt. Zahlreiche Aufgaben und Vorschläge für weitergehende Experimente laden Sie darüber hinaus zur praktischen Vertiefung des Themas ein. Nach der Lektüre können Sie abschätzen, welche Vorteile Continuous Delivery konkret bietet, und Sie verfügen über das nötige Handwerkszeug, um Continuous Delivery in Ihrem eigenen Arbeitsumfeld zu etablieren. Die Neuauflage wurde in Bezug auf Werkzeuge wie Docker, Jenkins, Graphite und den ELK-Stack aktualisiert. An neuen Themen sind Docker Compose, Docker Machine, Immutable Server, Microservices und die Einführung von Continuous Delivery ohne DevOps hinzugekommen.

Mastering Ubuntu Server

Master the art of deploying, configuring, managing, and troubleshooting Ubuntu Server 18.04, 2nd Edition

Author: Jay LaCroix

Publisher: Packt Publishing Ltd

ISBN: 1788997085

Category: Computers

Page: 552

View: 2330

Get up-to-date with the finer points of Ubuntu Server using this comprehensive guide Key Features A practical easy-to-understand book that will teach you how to deploy, maintain and troubleshoot Ubuntu Server Get well-versed with newly-added features in Ubuntu 18.04. Learn to manage cutting-edge technologies such as virtualization, containers, Nextcloud and more Book Description Ubuntu Server has taken the data centers by storm. Whether you're deploying Ubuntu for a large-scale project or for a small office, it is a stable, customizable, and powerful Linux distribution that leads the way with innovative and cutting-edge features. For both simple and complex server deployments, Ubuntu's flexible nature can be easily adapted to meet to the needs of your organization. With this book as your guide, you will learn all about Ubuntu Server, from initial deployment to creating production-ready resources for your network. The book begins with the concept of user management, group management, and filesystem permissions. Continuing into managing storage volumes, you will learn how to format storage devices, utilize logical volume management, and monitor disk usage. Later, you will learn how to virtualize hosts and applications, which will cover setting up KVM/QEMU, as well as containerization with both Docker and LXD. As the book continues, you will learn how to automate configuration with Ansible, as well as take a look at writing scripts. Lastly, you will explore best practices and troubleshooting techniques when working with Ubuntu Server that are applicable to real-world scenarios. By the end of the book, you will be an expert Ubuntu Server administrator who is well-versed in its advanced concepts. What you will learn Manage users, groups, and permissions Encrypt and decrypt disks with Linux Unified Key Setup (LUKS) Set up SSH for remote access, and connect it to other nodes Add, remove, and search for packages Use NFS and Samba to share directories with other users Get to know techniques for managing Apache and MariaDB Explore best practices and troubleshooting techniques Get familiar with scripting Automate server deployments with Ansible Who this book is for This book is intended for readers with intermediate or advanced-beginner skills with Linux, who would like to learn all about setting up servers with Ubuntu Server. This book assumes that the reader knows the basics of Linux, such as editing configuration files and running basic commands.

“As if you had invented human speech!”

The Ansible, Utopia And Science Fiction in Ursula K. Le Guin's Hainish Cycle

Author: Veronika Mayer

Publisher: GRIN Verlag

ISBN: 365628721X

Category: Literary Criticism

Page: 12

View: 9118

Studienarbeit aus dem Jahr 2012 im Fachbereich Englisch - Literatur, Werke, Note: 1,0, Technische Universität Carolo-Wilhelmina zu Braunschweig (Englisches Seminar), Veranstaltung: Utopia – Dystopia, Sprache: Deutsch, Abstract: In 1979, Barry N. Malzberg remarks about Ursula K. Le Guin that “she is, as the date of this essay, the most important contemporary writer of science fiction, and this field cannot be understood if she is not” (9). Indeed, Le Guin takes an exceptional posi- tion among writers of science fiction in the 1960s and 1970s. First, Le Guin can be re- cognized as a highly active writer during that period of time, as ten texts from her Hain- ish Cycle were published between 1966 and 19741. Among these texts are prize-win- ning novels like The Left Hand of Darkness (1969) and The Dispossessed (1974), which were both winners of the Hugo Award and the Nebula award and thus made her “not only the first woman to receive the Hugo and Nebula for the year's best novel, but the only writer to receive both awards twice for the best novel” (De Bolt, 22). Second, Le Guin also is a crucial person in the development of science fiction as a genre. Her novel The Dispossessed bears the subheading An Ambiguous Utopia. With this novel Le Guin reunites two genres which have “many close and evident connections[,] [...] [but also] exceptionally complex [interrelations]” (Williams, 52). These two genres are utopian fiction and science fiction. In The Dispossessed Le Guin also laid the technolo- gical foundation for her whole Hainish universe: She led her main character Shevek to the invention of the ansible, a means of immediate interstellar communication. My thes- is is that this technological invention, the ansible, is the crucial, but ambivalent element which makes Lu Guin's work science fiction and utopian fiction at the same time and moreover bears utopian as well as dystopian characteristics. In order to prove my thesis, I will first state and explain definitions of utopian fic- tion and science fiction. Secondly, I will give a short overview on Le Guin's biography and the works in her Hainish Cycle. Furthermore, I will analyze five novels from this cycle on the importance of the ansible. These works are Rocannon's World (1966), Planet of Exile (1966), The Left Hand of Darkness (1969), The Word for World is For- rest (1972) and The Dispossessed (1974).

Mastering Jenkins

Author: Jonathan McAllister

Publisher: Packt Publishing Ltd

ISBN: 1784392839

Category: Computers

Page: 334

View: 8958

Configure and extend Jenkins to architect, build, and automate efficient software delivery pipelines About This Book Configure and horizontally scale a Jenkins installation to support a development organization of any size Implement Continuous Integration, Continuous Delivery, and Continuous Deployment solutions in Jenkins A step-by-step guide to help you get the most out of the powerful automation orchestration platform that is Jenkins Who This Book Is For If you are a novice or intermediate-level Jenkins user who has used Jenkins before but are not familiar with architecting solutions and implementing it in your organization, then this is the book for you. A basic understanding of the core elements of Jenkins is required to make the best use of this book. What You Will Learn Create and manage various types of build jobs, and implement automation tasks to support a software project of any kind Get to grips with the automated testing architecture, and scalable automated testing techniques Facilitate the delivery of software across the SDLC by creating scalable automated deployment solutions Manage scalable automation pipelines in Jenkins using the latest build, test, and deployment strategies Implement a scalable master / slave build automation platform, which can support Windows, Mac OSX, and Linux software solutions Cover troubleshooting and advanced configuration techniques for Jenkins slave nodes Support a robust build and delivery system by implementing basic infrastructure as code solutions in configuration management tools such as Ansible In Detail With the software industry becoming more and more competitive, organizations are now integrating delivery automation and automated quality assurance practices into their business model. Jenkins represents a complete automation orchestration system, and can help converge once segregated groups into a cohesive product development and delivery team. By mastering the Jenkins platform and learning to architect and implement Continuous Integration, Continuous Delivery, and Continuous Deployment solutions, your organization can learn to outmanoeuvre and outpace the competition. This book will equip you with the best practices to implement advanced continuous delivery and deployment systems in Jenkins. The book begins with giving you high-level architectural fundamentals surrounding Jenkins and Continuous Integration. You will cover the different installation scenarios for Jenkins, and see how to install it as a service, as well as the advanced XML configurations. Then, you will proceed to learn more about the architecture and implementation of the Jenkins Master/Save node system, followed by creating and managing Jenkins build jobs effectively. Furthermore, you'll explore Jenkins as an automation orchestration system, followed by implementing advanced automated testing techniques. The final chapters describe in depth the common integrations to Jenkins from third-party tools such as Jira, Artifactory, Amazon EC2, and getting the most out of the Jenkins REST-based API. By the end of this book, you will have all the knowledge necessary to be the definitive resource for managing and implementing advanced Jenkins automation solutions for your organization. Style and approach This book is a step-by-step guide to architecting and implementing automated build solutions, automated testing practices, and automated delivery methodologies. The topics covered are based on industry-proven techniques, and are explained in a simple and easy to understand manner.

Projekt Phoenix

Der Roman über IT und DevOps – Neue Erfolgsstrategien für Ihre Firma

Author: Gene Kim

Publisher: O'Reilly

ISBN: 3960100671

Category: Computers

Page: 352

View: 8238

Bill ist IT-Manager bei Parts Unlimited. An einem Dienstagmorgen erhält er auf der Fahrt zur Arbeit einen Anruf seines CEO. Die neue IT-Initiative der Firma mit dem Codenamen Projekt Phoenix ist entscheidend für die Zukunft von Parts Unlimited, aber das Projekt hat Budget und Zeitplan massiv überzogen. Der CEO will, dass Bill direkt an ihn berichtet und das ganze Chaos in neunzig Tagen aufräumt, denn sonst wird Bills gesamte Abteilung outgesourct. Mit der Hilfe eines Vorstandsmitglieds und dessen mysteriöser Philosophie der Drei Wege wird Bill klar, dass IT-Arbeit mehr mit dem Fertigungsbereich in einer Fabrik zu tun hat als er sich je vorstellen konnte. Die Zeit drängt: Bill muss dafür sorgen, dass der Arbeitsfluss auch zwischen den Abteilungen deutlich besser läuft und das Business-Funktionalität zuverlässig bereitgestellt wird. Drei Koryphäen der DevOps-Bewegung liefern hier die rasante und unterhaltsame Story, in der sich jeder, der im IT-Bereich arbeitet, wiederfinden wird. Sie erfahren nicht nur, wie Sie Ihre eigene IT-Organisation verbessern können - nach der Lektüre dieses Buchs werden Sie IT auch nie wieder so sehen wie zuvor.

Mastering Ceph

Author: Nick Fisk

Publisher: Packt Publishing Ltd

ISBN: 1785881280

Category: Computers

Page: 240

View: 588

Deep dive into the unified, distributed storage system in order to provide excellent performance About This Book Leverage Ceph's advanced features such as erasure coding, tiering, and Bluestore Solve large-scale problems with Ceph as a tool by understanding its strengths and weaknesses to develop the best solutions A practical guide that covers engaging use cases to help you use advanced features of Ceph effectively Who This Book Is For If you are a developer and an administrator who has deployed a Ceph cluster before and are curious about some of the most advanced features in order to improve performance then this book is for you What You Will Learn Know when and how to use some of Ceph's advanced new features Set up a test cluster with Ansible and some virtual machines using VirtualBox and Vagrant Develop novel solutions to massive problems with librados and shared object classes. Choose intelligent parameters for an erasure coded pool and set it up. Configure the Bluestore settings and see how they interact with different hardware configurations. Keep Ceph running through thick and thin with tuning, monitoring and disaster recovery advice. In Detail Mastering Ceph covers all that you need to know to use Ceph effectively. Starting with design goals and planning steps that should be undertaken to ensure successful deployments, you will be guided through to setting up and deploying the Ceph cluster, with the help of orchestration tools. Key areas of Ceph including Bluestore, Erasure coding and cache tiering will be covered with help of examples. Development of applications which use Librados and Distributed computations with shared object classes are also covered. A section on tuning will take you through the process of optimisizing both Ceph and its supporting infrastructure. Finally, you will learn to troubleshoot issues and handle various scenarios where Ceph is likely not to recover on its own. By the end of the book, you will be able to successfully deploy and operate a resilient high performance Ceph cluster. Style and Approach A practical guide which has each chapter explaining the concept, sharing tips and tricks and a use case to implement the most powerful features of Ceph

Mastering OpenStack

Author: Omar Khedher,Chandan Dutta Chowdhury

Publisher: Packt Publishing Ltd

ISBN: 1786462281

Category: Computers

Page: 470

View: 986

Discover your complete guide to designing, deploying, and managing OpenStack-based clouds in mid-to-large IT infrastructures with best practices, expert understanding, and more About This Book Design and deploy an OpenStack-based cloud in your mid-to-large IT infrastructure using automation tools and best practices Keep yourself up-to-date with valuable insights into OpenStack components and new services in the latest OpenStack release Discover how the new features in the latest OpenStack release can help your enterprise and infrastructure Who This Book Is For This book is for system administrators, cloud engineers, and system architects who would like to deploy an OpenStack-based cloud in a mid-to-large IT infrastructure. This book requires a moderate level of system administration and familiarity with cloud concepts. What You Will Learn Explore the main architecture design of OpenStack components and core-by-core services, and how they work together Design different high availability scenarios and plan for a no-single-point-of-failure environment Set up a multinode environment in production using orchestration tools Boost OpenStack's performance with advanced configuration Delve into various hypervisors and container technology supported by OpenStack Get familiar with deployment methods and discover use cases in a real production environment Adopt the DevOps style of automation while deploying and operating in an OpenStack environment Monitor the cloud infrastructure and make decisions on maintenance and performance improvement In Detail In this second edition, you will get to grips with the latest features of OpenStack. Starting with an overview of the OpenStack architecture, you'll see how to adopt the DevOps style of automation while deploying and operating in an OpenStack environment. We'll show you how to create your own OpenStack private cloud. Then you'll learn about various hypervisors and container technology supported by OpenStack. You'll get an understanding about the segregation of compute nodes based on reliability and availability needs. We'll cover various storage types in OpenStack and advanced networking aspects such as SDN and NFV. Next, you'll understand the OpenStack infrastructure from a cloud user point of view. Moving on, you'll develop troubleshooting skills, and get a comprehensive understanding of services such as high availability and failover in OpenStack. Finally, you will gain experience of running a centralized logging server and monitoring OpenStack services. The book will show you how to carry out performance tuning based on OpenStack service logs. You will be able to master OpenStack benchmarking and performance tuning. By the end of the book, you'll be ready to take steps to deploy and manage an OpenStack cloud with the latest open source technologies. Style and approach This book will help you understand the flexibility of OpenStack by showcasing integration of several out-of-the-box solutions in order to build a large-scale cloud environment.. It will also cover detailed discussions on the various design and deployment strategies for implementing a fault-tolerant and highly available cloud infrastructure.