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Books > Computing & IT > Computer hardware & operating systems > Operating systems & graphical user interfaces (GUIs) > Unix, Unix Linux & Unix TCL/TK

CentOS High Performance (Paperback): Gabriel Canepa CentOS High Performance (Paperback)
Gabriel Canepa
R984 Discovery Miles 9 840 Ships in 10 - 15 working days

Create high availability clusters to enhance system performance using CentOS 7 About This Book * Master the concepts of high performance and high availability to eliminate performance bottlenecks * Maximize the uptime of services running in a CentOS 7 cluster * A step-by-step guide that will provide knowledge of methods and approaches to optimize the performance of CentOS clusters Who This Book Is For This book is targeted at system administrators: those who want a detailed, step-by-step guide to learn how to set up a high-availability CentOS 7 cluster, and those who are looking for a reference book to help them learn or refresh the necessary skills to ensure their systems and respective resources are utilized optimally. No previous knowledge of high-availability systems is needed, though the reader is expected to have at least some degree of familiarity with any spin-off of the Fedora family of Linux distributions, preferably CentOS. What You Will Learn * Install a CentOS 7 cluster and network infrastructure * Configure firewall, networking, and clustering services and settings * Set up and test a HAC (high-availability cluster) to host an Apache web server and a MariaDB database server * Monitor performance and availability * Identify bottlenecks and troubleshoot issues * Improve performance and ensure high availability In Detail CentOS is the enterprise level Linux OS, which is 100% binary compatible to Red Hat Enterprise Linux (RHEL). It acts as a free alternative to RedHat's commercial Linux offering, with only a change in the branding. A high performance cluster consists in a group of computers that work together as one set parallel, hence minimizing or eliminating the downtime of critical services and enhancing the performance of the application. Starting with the basic principles of clustering, you will learn the necessary steps to install a cluster with two CentOS 7 servers. We will then set up and configure the basic required network infrastructure and clustering services. Further, you will learn how to take a proactive approach to the split-brain issue by configuring the failover and fencing of the cluster as a whole and the quorum of each node individually. Further, we will be setting up HAC and HPC clusters as a web server and a database server. You will also master the art of monitoring performance and availability, identifying bottlenecks, and exploring troubleshooting techniques. At the end of the book, you'll review performance-tuning techniques for the recently installed cluster, test performance using a payload simulation, and learn the necessary skills to ensure that the systems, and the corresponding resources and services, are being utilized to their best capacity. Style and approach An easy-to-follow and step-by-step guide with hands-on instructions to set up real-world simple cluster scenarios that will start you on the path to building more complex applications on your own.

Containerization with LXC (Paperback): Konstantin Ivanov Containerization with LXC (Paperback)
Konstantin Ivanov
R1,405 Discovery Miles 14 050 Ships in 10 - 15 working days

Get acquainted with the world of LXC About This Book * Get the most practical and up-to-date resource on LXC and take full advantage of what Linux containers can offer in the day-to-day operations of large-scale applications * Learn how to deploy and administer various workloads such as web applications inside LXC * Save your organization time and money by building robust and secure containers and by speeding the deployment process of your software Who This Book Is For This book is for Linux engineers and software developers who are looking to deploy applications in a fast, secure, and scalable way for use in testing and production. What You Will Learn * Deep dive into the foundations of Linux containers with kernel namespaces and cgroups * Install, configure, and administer Linux containers with LXC and libvirt * Begin writing applications using Python libvirt bindings * Take an in-depth look at container networking * Set up monitoring and security with LXC * Build and deploy a highly available application with LXC in the cloud In Detail In recent years, containers have gained wide adoption by businesses running a variety of application loads. This became possible largely due to the advent of kernel namespaces and better resource management with control groups (cgroups). Linux containers (LXC) are a direct implementation of those kernel features that provide operating system level virtualization without the overhead of a hypervisor layer. This book starts by introducing the foundational concepts behind the implementation of LXC, then moves into the practical aspects of installing and configuring LXC containers. Moving on, you will explore container networking, security, and backups. You will also learn how to deploy LXC with technologies like Open Stack and Vagrant. By the end of the book, you will have a solid grasp of how LXC is implemented and how to run production applications in a highly available and scalable way. Style and approach A practical guide that introduces the core technologies behind Linux containers and provides a deep dive into installation, configuration, and operations of LXC.

Linux Administration - The Linux Operating System and Command Line Guide for Linux Administrators (Paperback): Jason Cannon Linux Administration - The Linux Operating System and Command Line Guide for Linux Administrators (Paperback)
Jason Cannon
R648 Discovery Miles 6 480 Ships in 10 - 15 working days
Mastering Linux - Security (Paperback): Paul Cobbaut Mastering Linux - Security (Paperback)
Paul Cobbaut
R552 Discovery Miles 5 520 Ships in 10 - 15 working days
Mastering Linux - System Administration (Paperback): Paul Cobbaut Mastering Linux - System Administration (Paperback)
Paul Cobbaut
R871 Discovery Miles 8 710 Ships in 10 - 15 working days
Oracle Solaris 11.2 System Administration Handbook (Oracle Press) (Paperback, Ed): Harry Foxwell, Glynn Foster Oracle Solaris 11.2 System Administration Handbook (Oracle Press) (Paperback, Ed)
Harry Foxwell, Glynn Foster
R1,318 R1,097 Discovery Miles 10 970 Save R221 (17%) Ships in 10 - 15 working days

Master the Powerful Management Tools of Oracle Solaris 11.2 Govern a reliable and secure enterprise cloud computing infrastructure using the detailed information contained in this Oracle Press guide. Oracle Solaris 11 System Administration Handbook offers end-to-end deployment, configuration, and management instruction. Find out how to install and update Oracle Solaris 11.2, migrate data and applications, build bare-metal and virtual networks, and tune performance. This comprehensive resource fully explains new features, including OpenStack cloud support, Unified Archive provisioning, and Oracle Solaris Zones. * Install Oracle Solaris 11.2 on SPARC and x86 systems * Virtualize and sandbox applications with Oracle Solaris Zones * Handle the complete software lifecycle to ensure systems are appropriately patched * Create both physical and virtual networks and control bandwidth * Implement reliable, secure infrastructure with automated compliance reporting * Install software from pre-configured Unified Archives or custom IPS repositories * Manage configuration on a large scale with SMF, Puppet, and RAD * Administer cloud-based compute, storage, and networking resources using OpenStack

Learning RHEL Networking (Paperback): Andrew Mallett Learning RHEL Networking (Paperback)
Andrew Mallett
R1,357 Discovery Miles 13 570 Ships in 10 - 15 working days

0

Learning Linux Shell Scripting (Paperback): Ganesh Sanjiv Naik Learning Linux Shell Scripting (Paperback)
Ganesh Sanjiv Naik
R1,395 Discovery Miles 13 950 Ships in 10 - 15 working days

Unleash the power of shell scripts to solve real-world problems by breaking through the practice of writing tedious code About This Book * Learn how to efficiently and effectively build shell scripts and develop advanced applications with this handy book * Develop high quality and efficient solutions by writing professional and real-world scripts, and debug scripts by checking and shell tracing * A step-by-step tutorial to automate routine tasks by developing scripts from a basic level to very advanced functionality Who This Book Is For This book is ideal for those who are proficient at working with Linux and who want to learn about shell scripting to improve their efficiency and practical skills. By the end of this book, you will be able to confidently use your own shell scripts in the real world. What You Will Learn * Familiarize yourself with the various text filtering tools available in Linux * Combine the fundamental text and file processing commands to process data and automate repetitive tasks * Understand expressions and variables and how to use them practically * Automate decision-making and save a lot of time and effort of revisiting code * Get to grips with advanced functionality such as using traps and signals and using dialogs to develop screens * Start up a system and customize a Linux system * Take an in-depth look at regular expressions and pattern matching to understand the capabilities of scripting In Detail Linux is the one of the most powerful and universally adopted OSes. Shell is a program that gives the user direct interaction with the operating system. Scripts are collections of commands that are stored in a file. The shell can read this file and act on the commands as if they were typed on the keyboard. Shell scripting is used to automate day-to-day administration, and for testing or product development tasks. This book covers Bash, GNU Bourne Again SHell, preparing you to work in the exciting world of Linux shell scripting. We start with an introduction to the Shell environment and explain basic commands used in Shell. Next we move on to check, kill, and control the execution of processes in Linux OS. Further, we teach you about the filter tools available in Linux and explain standard output and standard errors devices. Then we will ensure you understand Shell's interpretation of commands and get a firmer grasp so you use them in practice. Next, you'll experience some real-world essentials such as debugging and perform Shell arithmetic fluently. Then you'll take a step ahead and learn new and advanced topics in Shell scripting, such as starting up a system and customizing a Linux system. Finally, you'll get to understand the capabilities of scripting and learn about Grep, Stream Editor, and Awk. Style and approach This practical book will go from the very basics of shell scripting to complex, customized automation. The idea behind this book is to be as practical as possible and give you the look and feel of what real-world scripting is like.

Puppet 4 Essentials - (Paperback, 2nd Revised edition): Felix Frank, Martin Alfke Puppet 4 Essentials - (Paperback, 2nd Revised edition)
Felix Frank, Martin Alfke
R1,242 Discovery Miles 12 420 Ships in 10 - 15 working days

Acquire skills to manage your IT infrastructure effectively with Puppet About This Book * Breeze through Puppet 4's key features and performance improvements to bring real advantage to your IT infrastructure * Discover Puppet best practices to help you avoid common mistakes and pitfalls * Blitz through easy-to-follow examples to get to grips with Puppet and succeed with everyday IT automation Who This Book Is For If you're an experienced IT professional and a new Puppet user, this book will provide you with all you need to know to go from installation to advanced automation in no time at all. Get a rapid introduction to the essential topics and then tackle Puppet for advanced automation. What You Will Learn * Write and employ individual Puppet manifests * Understand how Puppet implements system abstraction * Deploy the Puppet master and agents * Leverage and extend Facter to summarize your systems * Create modular and reusable Puppet code * Extend your code base with publicly available Puppet modules * Use the modern features of Puppet 4 * Separate logic from data using Hiera In Detail Puppet is a configuration management tool that allows you to automate all your IT configurations, giving you control over what you do to each Puppet Agent in a network, and when and how you do it. In this age of digital delivery and ubiquitous Internet presence, it's becoming increasingly important to implement scalable and portable solutions, not only in terms of software, but also the systems that run it. The free Ruby-based tool Puppet has established itself as the most successful solution to manage any IT infrastructure. Ranging from local development environments through complex data center setups to scalable cloud implementations, Puppet allows you to handle them all with a unified approach. Puppet 4 Essentials, Second Edition gets you started rapidly and intuitively as you'll put Puppet's tools to work right away. It will also highlight the changes associated with performance improvements as well as the new language features in Puppet 4. We'll start with a quick introduction to Puppet to get you managing your IT systems quickly. You will then learn about the Puppet Agent that comes with an all-in-one (AIO) package and can run on multiple systems. Next, we'll show you the Puppet Server for high-performance communication and passenger packages. As you progress through the book, the innovative structure and approach of Puppet will be explained with powerful use cases. The difficulties that are inherent to a complex and powerful tool will no longer be a problem for you as you discover Puppet's fascinating intricacies. By the end of the book, you will not only know how to use Puppet, but also its companion tools Facter and Hiera, and will be able to leverage the flexibility and expressive power implemented by their tool chain. Style and approach This quick learning guide for Puppet follows a practical approach, starting with some basic commands that you can use from the shell right away. It comprises a series of examples that will get you familiar with the most important aspects of Puppet in a flash.

Vagrant - Make Your Life Easier With VAGRANT. Master VAGRANT FAST and EASY! (Paperback): Matthew Gimson Vagrant - Make Your Life Easier With VAGRANT. Master VAGRANT FAST and EASY! (Paperback)
Matthew Gimson
R279 Discovery Miles 2 790 Ships in 10 - 15 working days
Linux Shell Scripting Essentials (Paperback): Sinny Kumari Linux Shell Scripting Essentials (Paperback)
Sinny Kumari
R1,387 Discovery Miles 13 870 Ships in 10 - 15 working days

Learn shell scripting to solve complex shell-related problems and to efficiently automate your day-to-day tasks About This Book * Familiarize yourself with the terminal by learning about powerful shell features * Automate tasks by writing shell scripts for repetitive work * Packed with easy-to-follow, hands-on examples to help you write any type of shell script with confidence Who This Book Is For This book is aimed at administrators and those who have a basic knowledge of shell scripting and who want to learn how to get the most out of writing shell scripts. What You Will Learn * Write effective shell scripts easily * Perform search operations and manipulate large text data with a single shell command * Modularize reusable shell scripts by creating shell libraries * Redirect input, output, and errors of a command or script execution to other streams * Debug code with different shell debugging techniques to make your scripts bug-free * Manage processes, along with the environment variables needed to execute them properly * Execute and embed other languages in your scripts * Manage creation, deletion, and search operations in files In Detail Shell scripting is a quick method to prototype complex applications or problems. Shell scripts are a collection of commands to automate tasks, usually those for which the user has a repeated need, when working on Linux-based systems. Using simple commands or a combination of them in a shell can solve complex problems easily. This book starts with the basics, including essential commands that can be executed on Linux systems to perform tasks within a few nanoseconds. You'll learn to use outputs from commands and transform them to show the data you require. Discover how to write shell scripts easily, execute script files, debug, and handle errors. Next, you'll explore environment variables in shell programming and learn how to customize them and add a new environment. Finally, the book walks you through processes and how these interact with your shell scripts, along with how to use scripts to automate tasks and how to embed other languages and execute them. Style and approach This book is a pragmatic guide to writing efficient shell programs, complete with hands-on examples and tips.

Wicked Cool Shell Scripts, 2nd Edition (Paperback, 2 Rev Ed): Dave Taylor Wicked Cool Shell Scripts, 2nd Edition (Paperback, 2 Rev Ed)
Dave Taylor
R974 R696 Discovery Miles 6 960 Save R278 (29%) Ships in 12 - 19 working days

Shell scripts are an efficient way to interact with your machine and manage your files and system operations. With just a few lines of code, your computer will do exactly what you want it to do. But you can also use shell scripts for many other essential (and not-so-essential) tasks. This second edition of Wicked Cool Shell Scripts offers a collection of useful, customizable, and fun shell scripts for solving common problems and personalizing your computing environment. Each chapter contains ready-to-use scripts and explanations of how they work, why you'd want to use them, and suggestions for changing and expanding them. You'll find a mix of classic favorites, like a disk backup utility that keeps your files safe when your system crashes, a password manager, a weather tracker, and several games, as well as 23 brand-new scripts, including: ZIP code lookup tool that reports the city and state Bitcoin address information retriever suite of tools for working with cloud services lik

Docker - Docker Guide for Production Environment (Paperback): Matthew Gimson Docker - Docker Guide for Production Environment (Paperback)
Matthew Gimson
R280 Discovery Miles 2 800 Ships in 10 - 15 working days
Yocto Project Reference Manual (Paperback): Richard Purdie Yocto Project Reference Manual (Paperback)
Richard Purdie
R801 Discovery Miles 8 010 Ships in 10 - 15 working days
Z Shell 5.1 Reference Manual (Paperback): Paul Falstad Z Shell 5.1 Reference Manual (Paperback)
Paul Falstad
R896 Discovery Miles 8 960 Ships in 10 - 15 working days
Exploring SE for Android (Paperback, Ed): William Confer, William Roberts Exploring SE for Android (Paperback, Ed)
William Confer, William Roberts
R1,279 Discovery Miles 12 790 Ships in 10 - 15 working days

COM053000

FreeBSD Handbook 1/2 (Paperback): FreeBSD Documentation Project FreeBSD Handbook 1/2 (Paperback)
FreeBSD Documentation Project
R886 Discovery Miles 8 860 Ships in 10 - 15 working days
SUSE Linux Enterprise Desktop 12 - Deployment Guide (Paperback): Dep Guide Contributors SUSE Linux Enterprise Desktop 12 - Deployment Guide (Paperback)
Dep Guide Contributors
R823 Discovery Miles 8 230 Ships in 10 - 15 working days
Ubuntu Linux - Learn administration, networking, and development skills with the #1 Linux distribution! (Paperback): Nick... Ubuntu Linux - Learn administration, networking, and development skills with the #1 Linux distribution! (Paperback)
Nick Germaine; Edited by Michel Gerard; Joseph Delgadillo
R600 Discovery Miles 6 000 Ships in 10 - 15 working days
Troubleshooting Ubuntu Server (Paperback): Skanda Bhargav Troubleshooting Ubuntu Server (Paperback)
Skanda Bhargav
R1,249 Discovery Miles 12 490 Ships in 10 - 15 working days

Make life at the office easier for server administrators by helping them build resilient Ubuntu server systems About This Book * Tackle the issues you come across in keeping your Ubuntu server up and running * Build server machines and troubleshoot cloud computing related issues using Open Stack * Discover tips and best practices to be followed for minimum maintenance of Ubuntu Server 3 Who This Book Is For This book is for a vast audience of Linux system administrators who primarily work on Debian-based systems and spend long hours trying fix issues with the enterprise server. Ubuntu is already one of the most popular OSes and this book targets the most common issues that most administrators have to deal with. With the right tools and definite solutions, you will be able to keep your Ubuntu servers in the pink of health. What You Will Learn * Deploy packages and their dependencies with repositories * Set up your own DNS and network for Ubuntu Server * Authenticate and validate users and their access to various systems and services * Maintain, monitor, and optimize your server resources and avoid tremendous load * Get to know about processes, assigning and changing priorities, and running processes in background * Optimize your shell with tools and provide users with an improved shell experience * Set up separate environments for various services and run them safely in isolation * Understand, build, and deploy OpenStack on your Ubuntu Server In Detail Ubuntu is becoming one of the favorite Linux flavors for many enterprises and is being adopted to a large extent. It supports a wide variety of common network systems and the use of standard Internet services including file serving, e-mail, Web, DNS, and database management. A large scale use and implementation of Ubuntu on servers has given rise to a vast army of Linux administrators who battle it out day in and day out to make sure the systems are in the right frame of operation and pre-empt any untoward incidents that may result in catastrophes for the businesses using it. Despite all these efforts, glitches and bugs occur that affect Ubuntu server's network, memory, application, and hardware and also generate cloud computing related issues using OpenStack. This book will help you end to end. Right from setting up your new Ubuntu Server to learning the best practices to host OpenStack without any hassles. You will be able to control the priority of jobs, restrict or allow access users to certain services, deploy packages, tackle issues related to server effectively, and reduce downtime. Also, you will learn to set up OpenStack, and manage and monitor its services while tuning the machine with best practices. You will also get to know about Virtualization to make services serve users better. Chapter by chapter, you will learn to add new features and functionalities and make your Ubuntu server a full-fledged, production-ready system. Style and approach This book contains topic-by-topic discussion in an easy-to-understand language with loads of examples to help you take care of Ubuntu Server. Plenty of screenshots will guide you through a step-by-step approach.

Kali Linux 2: Windows Penetration Testing (Paperback): Wolf Halton, Bo Weaver Kali Linux 2: Windows Penetration Testing (Paperback)
Wolf Halton, Bo Weaver
R1,443 Discovery Miles 14 430 Ships in 10 - 15 working days

Kali Linux: a complete pentesting toolkit facilitating smooth backtracking for working hackers About This Book * Conduct network testing, surveillance, pen testing and forensics on MS Windows using Kali Linux * Footprint, monitor, and audit your network and investigate any ongoing infestations * Customize Kali Linux with this professional guide so it becomes your pen testing toolkit Who This Book Is For If you are a working ethical hacker who is looking to expand the offensive skillset with a thorough understanding of Kali Linux, then this is the book for you. Prior knowledge about Linux operating systems and the BASH terminal emulator along with Windows desktop and command line would be highly beneficial. What You Will Learn * Set up Kali Linux for pen testing * Map and enumerate your Windows network * Exploit several common Windows network vulnerabilities * Attack and defeat password schemes on Windows * Debug and reverse-engineer Windows programs * Recover lost files, investigate successful hacks and discover hidden data in innocent-looking files * Catch and hold admin rights on the network, and maintain backdoors on the network after your initial testing is done In Detail Microsoft Windows is one of the two most common OS and managing its security has spawned the discipline of IT security. Kali Linux is the premier platform for testing and maintaining Windows security. Kali is built on the Debian distribution of Linux and shares the legendary stability of that OS. This lets you focus on using the network penetration, password cracking, forensics tools and not the OS. This book has the most advanced tools and techniques to reproduce the methods used by sophisticated hackers to make you an expert in Kali Linux penetration testing. First, you are introduced to Kali's top ten tools and other useful reporting tools. Then, you will find your way around your target network and determine known vulnerabilities to be able to exploit a system remotely. Next, you will prove that the vulnerabilities you have found are real and exploitable. You will learn to use tools in seven categories of exploitation tools. Further, you perform web access exploits using tools like websploit and more. Security is only as strong as the weakest link in the chain. Passwords are often that weak link. Thus, you learn about password attacks that can be used in concert with other approaches to break into and own a network. Moreover, you come to terms with network sniffing, which helps you understand which users are using services you can exploit, and IP spoofing, which can be used to poison a system's DNS cache. Once you gain access to a machine or network, maintaining access is important. Thus, you not only learn penetrating in the machine you also learn Windows privilege's escalations. With easy to follow step-by-step instructions and support images, you will be able to quickly pen test your system and network. Style and approach This book is a hands-on guide for Kali Linux pen testing. This book will provide all the practical knowledge needed to test your network's security using a proven hacker's methodology. The book uses easy-to-understand yet professional language for explaining concepts.

Penetration Testing with Raspberry Pi (Paperback, Ed): Joseph Muniz, Aamir Lakhani Penetration Testing with Raspberry Pi (Paperback, Ed)
Joseph Muniz, Aamir Lakhani
R879 Discovery Miles 8 790 Ships in 10 - 15 working days

COM043050

Mastering Linux - Storage (Paperback): Paul Cobbaut Mastering Linux - Storage (Paperback)
Paul Cobbaut
R721 Discovery Miles 7 210 Ships in 10 - 15 working days
Linux - The Ultimate Beginners Guide (Paperback): Max Green Linux - The Ultimate Beginners Guide (Paperback)
Max Green
R857 Discovery Miles 8 570 Ships in 10 - 15 working days
Web Penetration Testing with Kali Linux - (Paperback, 2nd Revised edition): Juned Ahmed Ansari Web Penetration Testing with Kali Linux - (Paperback, 2nd Revised edition)
Juned Ahmed Ansari
R1,402 Discovery Miles 14 020 Ships in 10 - 15 working days

Build your defense against web attacks with Kali Linux 2.0 About This Book * Gain a deep understanding of the flaws in web applications and exploit them in a practical manner * Get hands-on web application hacking experience with a range of tools in Kali Linux 2.0 * Develop the practical skills required to master multiple tools in the Kali Linux 2.0 toolkit Who This Book Is For If you are already working as a network penetration tester and want to expand your knowledge of web application hacking, then this book tailored for you. Those who are interested in learning more about the Kali Sana tools that are used to test web applications will find this book a thoroughly useful and interesting guide. What You Will Learn * Set up your lab with Kali Linux 2.0 * Identify the difference between hacking a web application and network hacking * Understand the different techniques used to identify the flavor of web applications * Expose vulnerabilities present in web servers and their applications using server-side attacks * Use SQL and cross-site scripting (XSS) attacks * Check for XSS flaws using the burp suite proxy * Find out about the mitigation techniques used to negate the effects of the Injection and Blind SQL attacks In Detail Kali Linux 2.0 is the new generation of the industry-leading BackTrack Linux penetration testing and security auditing Linux distribution. It contains several hundred tools aimed at various information security tasks such as penetration testing, forensics, and reverse engineering. At the beginning of the book, you will be introduced to the concepts of hacking and penetration testing and will get to know about the tools used in Kali Linux 2.0 that relate to web application hacking. Then, you will gain a deep understanding of SQL and command injection flaws and ways to exploit the flaws. Moving on, you will get to know more about scripting and input validation flaws, AJAX, and the security issues related to AJAX. At the end of the book, you will use an automated technique called fuzzing to be able to identify flaws in a web application. Finally, you will understand the web application vulnerabilities and the ways in which they can be exploited using the tools in Kali Linux 2.0. Style and approach This step-by-step guide covers each topic with detailed practical examples. Every concept is explained with the help of illustrations using the tools available in Kali Linux 2.0.

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