SaltStack is known as a popular configuration management system, but that barely scratches the surface. It is, in fact, a powerful automation suite, which is designed not only to help you manage your servers, but to help them manage themselves. SaltStack is used worldwide by organizations ranging from just a few servers, to tens of thousands of nodes across data centers in multiple continents. This award-winning software is fast becoming the standard for systems management in the cloud world.
This book will take you through the advanced features of SaltStack, bringing forward capabilities that will help you excel in the management of your servers.
You will be taken through the the mind of the modern systems engineer, and discover how they use Salt to manage their infrastructures, and why those design decisions are so important. The inner workings of Salt will be explored, so that as you advance your knowledge of Salt, you will be able to swim with the current, rather than against it.
Various subsystems of Salt are explained in detail, including Salt SSH, Salt Cloud, and external pillars, filesystems, and job caches.
You will be taken through an in-depth discussion of how to effectively scale Salt to manage thousands of machines, and how to troubleshoot issues when things don't go exactly the way you expect them to.
You will also be taken through an overview of RAET, Salt's new transport protocol, and given an insight into how this technology improves Salt, and the possibilities that it brings with it.What You Will LearnLearn how the pros are managing their infrastructures, and what techniques they use to keep everything running smoothly with SaltUnderstand what makes Salt tick, and how that affects the way you use itTake a look at familiar features in a new light, so that you have a better handle on how to approach tasksUse Salt SSH to manage servers that don't fit Salt's traditional use casesBesides automating your configuration, you will be able to automate your servers, and make them behave more intelligentlyMake better use of cloud-based services, including compute clouds such as EC2, Azure and OpenstackLearn about the new RAET protocol, and how it changes the way automation worksWho This Book Is For
This book is ideal for professionals who have been managing groups of servers, and want to learn how to add functionality and expand their tool set. This book will also explain some of the more advanced features of Salt, and explore how to use them to bring additional power to the fundamentals that the professionals have already been using.Style and approach
This book speaks informally, sometimes almost conversationally, to the user. Topics are covered in detail, using examples that should be comfortable to most users.
Whether you’re enabling a map, giving users directions, creating a game, recommending purchases, letting users check in, or creating an immersive experience, you’ll learn how iBeacons provide precise location information, empowering your applications to engage and interact with users nearby.Get examples of several application types you can build with iBeaconsLearn how iBeacons provide applications with proximity informationSet up, activate, and test iBeacons on both specialized and general-purpose hardwareExplore the APIs and tools you need to develop location-aware mobile applicationsUse built-in iOS features to interact with iBeacons, including PassbookBuild networks to help shoppers, travelers, conference attendees, and others find what they’re looking for
- Covers Oracle, Microsoft SQL Server, IBM DB2, MySQL, PostgreSQL, and Microsoft Access.
- Learn the core language for standard SQL, and variations for the most widely used database systems.
- Organize your database in terms of the relational model.
- Master tables, columns, rows, and keys.
- Retrieve, sort, and format data.- Filter the data that you don't want to see.
- Convert and manipulate data with SQL's built-in functions and operators.
- Use aggregate functions to summarize data.
- Create complex SQL statements by using joins, subqueries, constraints, conditional logic, and metadata.
- Create, alter, and drop tables, indexes, and views.
- Insert, update, delete, and merge data.
- Execute transactions to maintain the integrity of your data.
- Avoid common pitfalls involving nulls.
- Troubleshoot and optimize queries.
- Plenty of tips, tricks, and timesavers.
- Fully cross-referenced, linked, and searchable.
1. Running SQL Programs
2. The Relational Model
3. SQL Basics
4. Retrieving Data from a Table
5. Operators and Functions
6. Summarizing and Grouping Data
9. Set Operations
10. Inserting, Updating, and Deleting Rows
11. Creating, Altering, and Dropping Tables