IBM-operativsystemer

Welcome to "Embracing Modernity: A Comprehensive Guide to Mainframe Containerization." This book is designed as a comprehensive journey that will guide you from understanding the basic concepts of mainframes and containerization to the complexities of implementing and managing containers in a mainframe environment.Mainframes have been the cornerstone of the business world for many years, powering most of the critical operations in sectors such as banking, healthcare, and transportation. However, in an increasingly digital and agile world, there is a growing need for these systems to be more flexible, scalable, and compatible with modern application development and deployment practices.Containerization represents a technological breakthrough that addresses these needs. By encapsulating applications in isolated user spaces known as containers, it allows for a level of portability, simplicity, and efficiency that was previously unattainable.Despite the clear benefits, the path to integrating containerization into mainframe systems is not without its challenges. Many organizations struggle with understanding the best practices, tools, and methodologies to achieve this integration smoothly and effectively.This book aims to address these challenges head-on. We explore the inner workings of both mainframes and containerization before delving into their intersection. We also offer a detailed overview of the tools and platforms central to mainframe containerization, such as Docker and Kubernetes."Embracing Modernity: A Comprehensive Guide to Mainframe Containerization" is more than just a technical manual; it's a roadmap for organizations and individuals looking to usher their mainframes into the modern age. Whether you are a CIO looking to modernize your company's IT infrastructure, a DevOps engineer tasked with implementing containers in a mainframe environment, or an IT student interested in learning about this emerging field, this book is for you.

In der Informatik sind einige Fachleute der Meinung, dass das Mainframe Computing seine bedeutende Zeit berschritten hat. In den letzten 10 Jahren ist die Mainframe-Ausbildung weiter eingeschränkt worden, d.h., Vorlesungen für interessierte Studenten an deutschen Universitäten und Fachhochschulen existieren teilweise nur noch online im E-Learning. Das betrifft auch die dazugehörigen praktischen Übungen. Diese Entwicklung widerspricht insgesamt dem Bedarf von Großrechner-Fachpersonal in mittleren und großen Unternehmen. In diesem Bereich ist das Problem dadurch gewachsen, dass Mitarbeiter in den Ruhestand gewechselt sind und nicht mehr zur Verfügung stehen. In dem Buch Einführung in z/OS und OS/390 wurde bereits zu diesem Thema Stellung bezogen. Der Ist-Zustand von Mainframe-Fachpersonal auf dem IT-Arbeitsmarkt ist weiter geschrumpft. Die Universität Leipzig hat zusammen mit dem Institut für Informatik der Universitt Tübingen in der Vergangenheit versucht, diesen Prozess aufzuhalten. Es wurden Vorlesungen in Leipzig, Tübingen, Frankfurt (Frankfurt School of Finance & Management) zum Thema Mainframe Server gehalten in der Hoffnung, Studenten und Interessenten in das Mainframe Computing einzuführen. Das vorliegende Lehrbuch Mainframe System z Computing enthält wesentliche Änderungen gegenüber der 1. Auflage des Buches Einführung in z/OS und OS/390. Dazu zählen vordergründig Kapitel zur Hardware aktueller IBM-System-z-Server (z12, z15, z16). Es gibt insbesondere praktische Erkenntnisse und Erfahrungen zu den Themen DB2, IMS, CICS, WebSphere MQ, SMF und z/OS Connect EE. Das betrifft z.T. Nutzer mit normalen und auch solche mit Administrator-Rechten.

"In the decades between the Great Depression and the advent of cable television, when daily newspapers set the conversational agenda for the people of the United States, the best reporter in the business was a rumpled, hard-drinking figure named Homer Bigart. His reporting left marks on history. In 26 years at the New York Herald Tribune and 17 more at the New York Times, Bigart chronicled and brought to life the events that defined the era - wars in Europe, the Pacific, Korea, and Vietnam, the civil rights movement, the creation of Israel, the end of colonialism in Africa, and the Cuban revolution. He was one of the first reporters to visit and describe Hiroshima after the atomic bomb. He was the first correspondent to penetrate the Haganah, the militant Zionist underground in Palestine. He recounted the trial of Adolf Eichmann, the Army-McCarthy hearings, and the court-martial of William Calley. A model of versatility, he also wrote with verve and compassion about strip mining in Kentucky, squalor on the Bowery and the murder of a shopkeeper in Harlem. Despite two Pulitzers and a host of other prizes, Bigart never sought fame; when he retired from the New York Times in 1972, he quickly faded from public view, and few today know the extent to which he was esteemed by his peers and those who came after, including Neil Sheehan and David Halberstam. This is the first comprehensive biography to encompass all of Bigart's reporting, not just his war reporting"--