By Jon Cowie
Benefit from Chef's hugely customizable layout to take on particular automation concerns that you simply cannot remedy by way of easily utilizing Chef's instruments, assets, and providers out of the field. With this functional advisor, you are going to learn the inner constitution of this configuration administration expertise and study the place, how, and why so as to add customized code. writer Jon Cowie not just offers code snippets and useful suggestion for customizing Chef, but additionally is helping you identify case through case no matter if it really is on your top pursuits to customise in any respect. when you have intermediate-to-advanced Chef event, this e-book is integral.
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Extra resources for Customizing Chef: Getting the Most Out of Your Infrastructure Automation
Chef is modular Chef was also designed from the ground up to allow you to build your automated infrastructure using modular, reusable components. Chef cookbooks are formed out of discrete “chunks” of automation behavior that can be extended, shared, and reused across your infrastructure. In Chef, order matters Chef guarantees that it will run things in the same order, every time. If you define a run list in Chef, no matter how many Chef runs you perform, the resources in that run list will always be applied in the same order.
All of a sudden, something you took for granted as being a String is an Inte ger. Tracking down this sort of issue in dynamically typed languages can be extremely tricky, and it’s important to make you aware of this scenario so that you know to be careful. Dynamic typing does make things simpler than in statically typed languages, but it also means we as programmers have to be extra careful that our variables refer to objects of the type we think they do. info | 29 would be quite a limited language if you could only make use of the built-in objects.
The instant a meth‐ odology or technique is declared canonical, anything else is considered to be wrong— even if it might be what makes the most sense for your particular use case. Chef is categorically not a system that requires you to do anything in a particular way; rather, it provides you with everything you need to make those decisions for yourself and for the good of your business. As with all systems, however, there are some best practices —we’ll look at some of those throughout the course of this book.