If you've already tinkered a bit with Arduino or Raspberry Pi, and you want to get more hands-on with hardware, or even if you're completely new to electronics and you just want to dive in, then Beginning FPGA is the book you need. You don't need an electronics engineering degree or even any programming experience to get the most out of Beginning FPGA. Just bring your curiosity and your FPGA. In this book, you'll be using the MicroNova Mercury, a very affordable and breadboard-friendly FPGA development board. FPGA stands for Field-Programmable Gate Array. It's an integrated circuit waiting for you to tell it what to become. Unlike a microcontroller board like the Arduino, you don't really program an FPGA and tell it what to do; instead you use a hardware description language to tell it what to be. And what can it be? It can be just about anything you can imagine In this book you'll use it to create a pressure sensor, an air quality sensor, and just for fun, the KITT car display from Knight Rider (or Cylon eyes if you prefer to think of it that way). You'll also learn how to make your FPGA talk to a Raspberry Pi.Along the way, you'll learn the theory behind FPGAs and electronics, including the math and logic you need to understand what's happening - all explained in a fun, friendly, and accessible way. It also doesn't hurt that you'll be learning VHDL, a hardware description languae that is also an extremely marketable skill. What you'll learn * What an FPGA is and how it's different from a microcontroller or ASIC * How to set up your toolchain * How to use VHDL, a popular hardware description language, to tell your FPGA what to be * Theory behind FPGA and electronics * How to use your FPGA with a variety of sensors * How to use your FPGA to talk to a Raspberry Pi Who this book is for Arduino, Raspberry Pi, and other electronics enthusiasts who want a clear and practical introduction to FPGA. No experience necessary.

MongoDB, a cross-platform NoSQL database, is the fastest-growing new database in the world. MongoDB provides a rich document orientated structure with dynamic queries that you'll recognize from RDMBS offerings such as MySQL. In other words, this is a book about a NoSQL database that does not require the SQL crowd to re-learn how the database world works MongoDB has reached 1.0 and already boasts 50,000+ users. The community is strong and vibrant and MongoDB is improving at a fast rate. With scalable and fast databases becoming critical for today's applications, this book shows you how to install, administer and program MongoDB *without* pretending SQL never existed.What you'll learn* Set up MongoDB on all major platforms, including Linux and Cloud platforms* Model data within a document-oriented database* Work with your data using non-SQL commands* Write applications using MongoDB's PHP API* Optimize MongoDB* Master MongoDB administration, including replicationWho this book is for This book will appeal to everyone with some experience in database administration, and provides the entry point for those of us who don't want to hear about database theory but still need to implement a NoSQL-based database. PHP developers will also profit from this book, since it will add an important NoSQL database to their toolkit.

You need to maintain clients, servers and networks, while acquiring new skills. Foundations of Cent OS Linux: Enterprise Linux On the Cheap covers a free, unencumbered Linux operating system within the Red Hat lineage, but it does not assume you have a Red Hat Enterprise Linux license. Now you can learn CentOS Linux, the most powerful and popular of all Red Hat clones, keep maintaining your network at work, and become an Red Hat Certified Engineer, all just for the cost of this book.Introduces CentOS Linux and Fedora clients as equals to Red Hat Enterprise Linux Sets up CentOS as a secure, highperformance web services back end Prepares you for the RHCE examination, but does not assume an RHEL installation Table of Contents Installation BASH Client/Host Configuration Data Storage Management User Management X Window System Package Management Basic Linux Security Advanced Security Network Security Network Services Open Source Databases Linux Web Services File Sharing Services Linux Mail Servers Directory Services The Linux Kernel Linux Virtualization Linux Troubleshooting

CentOS is just like Red Hat, but without the price tag and with the virtuous license. When belts have to be tightened, we want to read about an OS with all the features of a commercial Linux variety, but without the pain. The Definitive Guide to CentOS is the first definitive reference for CentOS and focuses on CentOS alone, the workhorse Linux distribution, that does the heavy lifting in small and medium-size enterprises without drawing too much attention to itself. Provides tutorial and hands-on learning but is also designed to be used as a reference Bases all examples on real-world tasks that readers are likely to perform Serves up hard-won examples and hints and tips from the author's experiences of CentOS in production

The emergence of the cloud and modern, fast corporate networks demands that you perform judicious balancing of computational loads.Practical Load Balancing presents an entire analytical framework to increase performance not just ofone machine, but of your entire infrastructure. Practical Load Balancing starts by introducingkey concepts and the tools you'll need to tackle your load-balancing issues. You'll travel through the IP layers and learnhow they can create increased network traffic for you. You'll seehow to account for persistence and state, and how you can judge the performance of scheduling algorithms. You'll then learn how to avoid performance degradation and any risk of the sudden disappearance of a service on a server.If you're concerned with running your load balancer for an entire network, you'll find out how to set upyour network topography, and condense each topographical variety into recipes that will serve you in different situations. You'll also learn about individual servers, and load balancers that can perform cookie insertion or improve your SSL throughput. You'll also explore load balancing in the modern context of the cloud. While load balancers need to be configured for high availability once the conditions on the network have been created, modern load balancing has found its way into the cloud, where good balancing is vital for the very functioning of the cloud, and where IPv6 is becoming ever more important. You can read Practical Load Balancing from end to end or out of sequence, and indeed, if there are individual topics that interest you, you can pick up this book and work through it once you have read the first three chapters. What you'll learn Judgenetwork load balancingalgorithms and when to use them Plan your network for optimal load balancing performance Configure single servers to take advantage of modern load balancing software Learning to use load balancing software like HAproxy, STunnel etc. Become familiar with implications of IPv6 and the cloud Improve SSL throughput and seamless application cookie insertion Who this book is for

Network engineers, developers and IT managers. Table of Contents Part I: Getting Started 1. Introduction 2. How websites work: what makes them slow 3. Content Caching: keeping the load light 4. DNS based load balancing 5. Content Delivery Networks 6. Planning for Performance and Reliability Part II: Load Balancing Essentials 7. Essential concepts you need to know 8. HTTP load balancing 9. Database load balancing 10. Load balancing your network connection 11. SSL Load Balancing Part III: Load balancing situations 12. Clustering the Load Balancers for High Availability 13. Load balancing in the cloud 14. IPv6: Implications and concepts 15. Where to go next... Appendix 1: Common Terms and Concepts

Learn the concepts and develop the skills to be a true Ansible artist and use it inside and outside the box. This book applies key concepts immediately while building up your Ansible skills layer by layer through easy to grasp examples and engaging projects. You'll also think about security, why testing is important, and how to use version control safely. As a beginner to Ansible, you'll be guided step-by-step through creating your first Ansible playbook to deploying your first server and writing more complex cross-dependency playbooks. From the first line of code to the last, you'll constantly iterate and simplify your playbooks, iwhile taking on more complex topics as you construct a full Wordpress website stack consisting of a database, web servers, and load balancer. This book will prompt you to think about how these fit together and will explain what to do to ensure maintainability long into the future. Don't just use Ansible. Completely change how you go about provisioning, configuring, and managing servers, applications, and their dependencies with this powerful, open source automation tool. In exchange for this power and efficiency, Ansible demands a very different way of thinking about resources and how they all fit together. This can be hard to get your head around if you've never done it before. Every step of the way, Beginning Ansible Concepts and Application show you best practices so that you can confidently start using Ansible right away. What You'll Learn Set up an Ansible environment Create and run playbooks Organize groups of variables, vaults, roles, and tasks to ensure your playbooks are scalable Protect secrets using Ansible Vaults Automate the build of a Wordpress website Who This Book Is For Developers looking for a better way to manage their servers other than by logging in and typing commands. Also enthusiasts who want to learn not just how to use Ansible but how to use it correctly and confidently.

The Definitive Guide to MongoDB, Third Edition, is updated for MongoDB 3 and includes all of the latest MongoDB features, including the aggregation framework introduced in version 2.2 and hashed indexes in version 2.4. The Third Edition also now includes Python. MongoDB is the most popular of the "Big Data" NoSQL database technologies, and it's still growing. David Hows from 10gen, along with experienced MongoDB authors Peter Membrey and Eelco Plugge, provide their expertise and experience in teaching you everything you need to know to become a MongoDB pro.

Need a quick and easy to understand introduction to MongoDB and NoSQL databases? MongoDB Basics, from The Definitive Guide to MongoDB, 2E, shows you how a document-oriented database system differs from a relational database, and how to install and get started using it. You'll also learn MongoDB design basics, including geospatial indexing, how to navigate, view, and query your database, and how to use GridFS with a bit of Python.

Learn Raspberry Pi with Linux will tell you everything you need to know about the Raspberry Pi's GUI and command line so you can get started doing amazing things. You'll learn how to set up your new Raspberry Pi with a monitor, keyboard and mouse, and you'll discover that what may look unfamiliar in Linux is really very familiar. You'll find out how to connect to the internet, change your desktop settings, and you'll get a tour of installed applications. Next, you'll take your first steps toward being a Raspberry Pi expert by learning how to get around at the Linux command line. You'll learn about different shells, including the bash shell, and commands that will make you a true power user. Finally, you'll learn how to create your first Raspberry Pi projects: * Making a Pi web server: run LAMP on your own network * Making your Pi wireless: remove all the cables and retain all the functionality * Making a Raspberry Pi-based security cam and messenger service: find out who's dropping by * Making a Pi media center: stream videos and music from your Pi Raspberry Pi is awesome, and it's Linux. And it's awesome because it's Linux.But if you've never used Linux or worked at the Linux command line before, it can be a bit daunting. Raspberry Pi is an amazing little computer with tons of potential. And Learn Raspberry Pi with Linux can be your first step in unlocking that potential. What you'll learn * How to get online with Raspberry Pi * How to customize your Pi's desktop environment * Essential commands for putting your Pi to work * Basic network services - the power behind what Pi can do * How to make your Pi totally wireless by removing all the cables * How to turn your Pi into your own personal web server * How to turn your Pi into a spy * How to turn your Pi into a media center Who this book is for Raspberry Pi users who are new to Linux and the Linux command line.

The Definitive Guide to MongoDB, Second Edition, is updated for the latest version and includes all of the latest MongoDB features, including the aggregation framework introduced in version 2.2 and hashed indexes in version 2.4. MongoDB is the most popular of the Big Data NoSQL database technologies, and it's still growing. David Hows from 10gen, along with experienced MongoDB authors Peter Membrey and Eelco Plugge, provide their expertise and experience in teaching you everything you need to know to become a MongoDB pro. The Definitive Guide to MongoDB, Second Edition, starts with the basics, including how to install on Windows, Linux, and OS X, and how MongoDB handles your data. Then you'll learn how to develop with MongoDB with both PHP and Python, including an example application using a PHP driver to create a blog application. Finally, you'll dig into more advanced but extremely important MongoDB features, including optimization, replication, and sharding -- load-balancing that makes MongoDB ideal for dealing with Big Data. If you're dealing with data, MongoDB should be on your must-learn list. The Definitive Guide to MongoDB, Second Edition, is just the book you need.What you'll learn * Set up MongoDB on all major server platforms, including Windows, Linux, OS X, and cloud platforms like Rackspace, Azure, and Amazon EC2 * Work with GridFS and the new aggregation framework * Work with your data using non-SQL commands * Write applications using either PHP or Python * Optimize MongoDB * Master MongoDB administration, including replication, replication tagging, and tag-aware sharding Who this book is for Database admins and developers who need to get up to speed on MongoDB and its Big Data, NoSQL approach to dealing with data management.