Automation through Chef Opscode - download pdf or read online

By Navin Sabharwal

ISBN-10: 1430262958

ISBN-13: 9781430262954

ISBN-10: 1430262966

ISBN-13: 9781430262961

Automation via Chef Opscode offers an in-depth realizing of Chef, that's written in Ruby and Erlang for configuration administration, cloud infrastructure administration, procedure management, and community administration.

distinct at directors, specialists, and architect, the ebook publications them in the course of the complicated positive factors of the instrument that are worthy for infrastructure automation, devops automation, and reporting. The booklet presumes wisdom of Ruby and Erlang that are used as reference languages for growing recipes and cookbooks and as a refresher on them to assist the reader get on velocity with the movement of e-book.

The publication offers step-by-step directions on set up and configuration of Chef, utilization eventualities of Chef, in infrastructure automation by means of delivering universal eventualities like digital desktop provisioning, OS configuration for Windows, Linux, and Unix, provisioning and configuration of internet servers like Apache in addition to well known databases like MySQL.

It extra elaborates at the production of recipes, and cookbooks, which assist in deployment of servers and functions to any actual, digital, or cloud position, regardless of the dimensions of the infrastructure.

The books covers complicated featureslike LWRPs and Knife and additionally includes numerous illustrative pattern cookbooks on MySQL, Apache, and CouchDB deployment utilizing a step-by-step approach.

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Extra resources for Automation through Chef Opscode

Sample text

Rebuild on the Node Object The chef client downloads the node object from the chef server to the node. The node object is a JSON (JavaScript Object Notation) file which contains details like run list, node-specific attributes (if any), and some other information about that node. Expand the Run List The run list in the node object containing the details about every role/recipe that will be applied to the node is expanded and then placed in the order in which it will be applied to the node. The recipe that occurs first in the run list will be applied first, and so on.

Attributes are applied in chef in the following order, 1 being the lowest precedence and 16 the highest. Table 5-1 also describes the same thing in a different way, where 1 is the lowest precedence level and 15 is the highest. Table 5-1. Attribute precedence level Attribute Files Node/Recipe Environment Role Default 1 2 3 4 Force_default 5 6 Normal 7 8 Override 9 10 11 12 Force_override 13 14 Automatic 15 Identify Resources The next step is to identify the resources that would be required for successful compilation of the recipes.

Creating cookbooks. • Creating roles/environments or any other policies and then uploading them to the chef server. • Managing nodes using knife. Prerequisite Before we start with the installation, we must make sure we meet the prerequisites required to install and configure a workstation properly. • A working chef server with which we will configure our workstation. • Chef client requires at least 512MB of RAM, 15GB storage, and one vCPU (virtual CPU) running properly. • The node should be able to interact with the chef server via HTTPS.

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Automation through Chef Opscode by Navin Sabharwal


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