Get up to speed with Helm, the preeminent package manager for the Kubernetes container orchestration system. This practical guide shows you how to efficiently create, install, and manage the applications running inside your containers. Helm maintainers Matt Butcher, Matt Farina, and Josh Dolitsky explain how this package manager fits into the Kubernetes ecosystem and provide an inside look at Helm's design and best practices. More than 70% of the organizations that work with Kubernetes use Helm today. While the Helm community provides thousands of packages, or charts, to help you get started, this book walks developers and DevOps engineers through the process of creating custom charts to package applications. If you have a working understanding of Kubernetes, you're ready to go. Explore primary features including frequently used Helm commands Learn how to build and deploy Helm charts from scratch Use Helm to manage complexity and achieve repeatable deployments Package an application and its dependencies for easy installation Manage the entire lifecycle of applications on Kubernetes Explore ways to extend Helm to add features and functionality Learn features for testing, handling dependencies, and providing security

Follow the creation of a multi-site instance with Drupal. The practical examples and accompanying screenshots will help you to get multiple Drupal sites set up in no time. This book is for Drupal site builders. It is assumed that readers are familiar with Drupal already, with a basic grasp of its concepts and components. System administration concepts, such as configuring Apache, MySQL, and Vagrant are covered but no previous knowledge of these tools is required.

Walk through the development of complete Drupal 6 modules with this primer for PHP programmers, written specifically for Drupal 6 to get you started coding your first module. With great power comes... tremendous flexibility. Drupal is an award-winning open-source Content Management System, and the feature-packed sixth release is right around the corner. It's a modular system, with an elegant hook-based architecture, and great code. These are a few of the perks that make Drupal a choice platform for developers who want the power of an established CMS, but the freedom to make it work for them. From social networking to AJAX to e-commerce, the hundreds of existing modules attest to Drupal's flexibility. When you create a new module for Drupal, it fits seamlessly into the look and feel of your overall site. If you can think it in PHP, you can code it as a Drupal module. Dive into Drupal module development as we create the Philosopher Biographies website, developing new modules and themes to meet practical goals. Create custom content types. Add AJAX functionality with the jQuery library. Use external XML APIs to add content to your site. Email newsletters to site members. Use themes. Empower administrators with extra features. And bundle it all up in a custom installation profile. You won't find a "hello world" here If you're eager to start creating modules for Drupal 6, this is your book. Walk through the development of complete Drupal modules with this primer for PHP programmers. Specifically written for Drupal 6, this book will get you coding modules as quickly as possible, and help you add the features that will give your work that professional gloss Just getting started with Drupal development? This book will give you a clear, concise and, of course, practical guidance to take you from the basics of creating your first module to developing the skills to make you a Drupal developer to be reckoned with. Are you a Drupal developer looking to update to version 6? This book covers the new and updated APIs to guide your transition to Drupal 6. The new menu system, the Forms and Schema APIs, and many core revisions are covered in this book.

This practical introduction to OpenLDAP for Application Developers emphasizes how to get things done, going into Lightweight Directory Access Protocol (LDAP) theory only to answer practical questions. It demystifies OpenLDAP, providing a solid understanding of how to use its directory and covering building directory services, integrating directory services, and developing directory-enabled PHP or Python applications. Readers need only basic Linux system administration experience, not LDAP experience. Open-source OpenLDAP directory server is included in all major Linux distributions; many open-source and proprietary applications can use OpenLDAP's services. Client applications use LDAP to connect to OpenLDAP, search the directory, and (if authorized) modify and manipulate records. Most often used to provide network-based authentication services for users, LDAP servers have many other uses: address book, DNS database, organizational tool, even network object store for applications.

A practical guide to understanding and working with this proven Java/JSP based content management system .Understand how OpenCms handles and publishes content to the Web .Learn how to create your own, complex, OpenCms website .Develop the skills to implement, customize and maintain an OpenCms website This book takes you through the process of creating content rich web sites and applications using OpenCms. Although powerful and flexible, OpenCms can be daunting on first approach, but its advanced features reward the investment in learning. This book exists to ease Java developers into getting the most from OpenCms. OpenCms is a professional-level, open source Website Content Management System, with which you can create and manage complex websites. Based on Java and XML technology, it fits into almost any modern IT environment. With this book you will master OpenCms, and learn the skills to implement, customize and maintain an OpenCms website. This book covers .Installing OpenCms, and its basic concepts .Using the OpenCms Workplace .Exploring the core architecture and the virtual file system .Working with JSP templates .Creating OpenCms modules .Adding custom resource types .Exporting to static HTML .Deploying and managing an OpenCms Website At the end of this book, you will: .Understand how OpenCms handles and publishes content to the Web .Be confident working in the OpenCms environment .Have the skills to extend the OpenCms system .Be able to create your own, complex, OpenCms website Who this book is written for If you are a web developer new to OpenCms, or are an experienced OpenCms developer who is looking to get the most from the system, then this is the book for you. A working knowledge of Java, JSP and XML is required to get the most from OpenCms, and from this book.

DESCRIPTION Go may be the perfect systems language. Built with simplicity, concurrency, and modern applications in mind, Go provides the core tool set for rapidly building web, cloud, and systems applications. With superstar projects like Docker giving the language a high-visibility boost; it's no wonder that companies are clamoring for experienced Go engineers. With knowledge of a language like Java or C#, it's easy to get started with Go; the trick is finding the practical dirt-under-the-fingernails techniques that are needed to build production-ready code. Go in Practice guides readers through dozens of real-world techniques in key areas like package management and microservice communication. Following a cookbook-style Problem/Solution/Discussion format, this practical handbook builds on the foundational concepts of the Go language and introduces specific strategies that can be used in day-to-day applications. Readers will learn techniques for building web services, such as using Go in the cloud, testing and debugging, routing, and network applications. KEY FEATURES Practical hands-on guide Based on hard-earned knowledge Contains dozens of real-world techniques AUDIENCE Written for readers who have already started exploring Go and want to use it effectively in a production setting. ABOUT THE TECHNOLOGY Built with simplicity, concurrency, and modern applications in mind, Go provides the core tool set for rapidly building web, cloud, and systems applications. With superstar projects like Docker giving the language a high-visibility boost, it's no wonder that companies are clamoring for experienced Go engineers.