Understanding Chef: The Practical Guide

Explore the Chef development kit and infrastructure as code for managing tools. Learn to use Vagrant and VirtualBox to spin up preconfigured machines and run Chef recipes.

Explore the chef workflow, recipes, and cookbooks, and how the chef client and development kit coordinate server configurations. Install and verify chef dk, and note Ruby's role in writing recipes.

Understand Ruby, the scripting language used by Chef to write recipes, featuring dynamic typing, a hello world example with puts, and inline comments.

Explore Ruby strings, literals, and interpolation; learn when to use single vs double quotes, escape characters, and how here documents format multi-line text for configuration files.

Learn Ruby features by working with arrays—creating, indexing (zero-based), slicing, and common methods like length, first, and last—and transition to hashes for named server specs.

Learn how hashes in Ruby replace arrays for multi-value data, define and access nested hashes to describe server specs (memory, storage, cores), and use this for Chef recipes.

Learn Ruby basics for Chef recipe development, including using hashes, conditional and case statements, with practical examples on Vagrant and Chef workflows.

Explore how Chef uses infrastructure as code to manage configurations, starting with a simple hello world recipe that creates a file using ruby's file resource, emphasizing idempotence and state maintenance.

Use version control with git to manage Chef recipes like code, initializing repositories, committing changes, and tracking state for backup, testing, and collaboration in infrastructure as code.

Maintain system state by using chef package resource to remove insecure packages like telnet and telnet client, employing ruby arrays and each loops to uninstall multiple items.

Discover how chef enforces machine state with recipes and how ohai gathers system details like memory. See a specs recipe that writes total memory to /specs using node data.

Understand how to create a chef recipe that cleans up memory output using Ruby: strip KB, convert to megabytes and gigabytes, and format with rounding, string interpolation, and labeling.

Build and configure a lamp stack on Linux using Chef, installing Apache, PHP, and MySQL, deploying CodeIgniter, and creating a lamp cookbook with recipes and metadata for secure databases.

Learn to build a cookbook by writing a setup recipe that installs hddvd package, mariadb server, unzip, and dependencies for a lamp stack using chef package resources in local mode.

Develop a lamp stack on CentOS 7 by enabling epel and webtatic repositories, installing required rpm packages with Chef's execute resources, and using guards to ensure idempotent deployment.

Install php7 from EPL and Webtatic repositories using rpm and Chef, complete the lamp stack with apache and mariadb, install php packages, and enable and start services for boot.

Learn to install and configure MariaDB as part of a lamp stack, harden security by setting the root password, and manage commands with a Chef bash resource and node defaults.

Create a default MariaDB database and user for a code igniter application using Chef templates, provision privileges, and ensure idempotent execution with template-driven scripts.

Configure a LAMP stack and deploy CodeIgniter with Chef, including setting up Apache and MariaDB, downloading and unpacking CodeIgniter, placing files in the web root, and configuring the database connection.

Apply chef to install and configure a lamp stack and CodeIgniter, run the recipe, and verify the CodeIgniter site in a browser.

Discover how Chef automates installing and configuring a lamp stack with CodeIgniter using cookbooks and recipes, and how to destroy and recreate the machine to run end-to-end.

Explore Chef attributes and how to define them: inline in recipes, attributes files with defaults, and Ohai-based automatic data, then use these attributes in cookbooks and templates for automated configuration.

Understand how chef resolves attribute precedence among ohai data, the attributes file, and recipe definitions. Ohai values have the highest priority, then the attributes file, with recipe values applied last.

Learn about the three chef server types—hosted, on-premises enterprise, and open source—and how centralization and policy guide cookbook distribution to nodes. Use knife to upload cookbooks and manage organizations.

Learn how to split a lamp stack into separate web and database servers using Chef cookbooks, attributes, and templates to improve security, isolation, and load distribution.

Continue building and splitting a lamp stack using Chef cookbooks, configuring Apache and MariaDB, deploying templates, attributes, and remote access settings for the web and database servers.

Learn to split infrastructure into observer and database servers, manage Chef cookbook dependencies and attributes, and spin up two Vagrant machines with knife bootstrap for automated deployment.

Split the setup into two machines, upload cookbooks to a central server, and bootstrap nodes with knife to download and apply recipes via chef.

Configure a distributed lamp stack with chef: split web and database servers, upload cookbooks, bootstrap nodes with vagrant, and verify CodeIgniter and Maria database connectivity.

Explore the chef marketplace to find open-source community cookbooks and wrapper cookbooks for deploying configurations. Evaluate cookbook versions, updates, and platform support to bootstrap nginx server and the lamp stack.

Create a wrapper cookbook to customize attributes of an existing cookbook without forking, enabling attribute overrides and safe upgrades from the supermarket cookbook.

Learn to use marketplace cookbooks from the chef supermarket by building a wrapper cookbook, declaring dependencies, and including the internets_server recipe to configure an nginx virtual host.

Implementing the cookbook shows how to upload cookbooks with knife, configure a wrapper cookbook, manage dependencies with virtual groucho's, and bootstrap a test machine for the internet server cookbook.

Deploy a configured Engine X server with a wrapper cookbook, verify port 80 forwarding, and create a testing index file in a vagrant environment.

Explore running and testing the chef cookbook by creating and using a custom resource to configure a virtual host on the internet server, deploying files, and managing versions.

Create and apply roles to enforce security policies across nodes by grouping cookbooks and recipes with attributes, using run lists and knife to manage role membership.

Test the role by running the chef client on database and web servers to verify policy compliance, and learn how roles, environments, attributes, and cookbooks interact to govern server configurations.

Set up and manage multiple infrastructure environments using Chef environment objects, creating production and testing environments, updating the code cookbook, and deploying a customized welcome page for CodeIgniter.

Create and manage chef environments to separate testing and production, assign per-environment cookbooks and versions, attach environments to nodes, and verify differing web pages through environment-specific templates.

Explore how Chef's search tool uses knife search to query nodes, environments, and data bags, using wildcards and attribute filters to locate servers, IPs, and Ohai attributes.

Learn how to search inside recipes using chef search and knife search, retrieve node data from data bags stored on a chef server, and structure simple key value schemas.

Learn how to use data bags in Chef to fetch credentials from databanks and supply them to recipes. Replace hard-coded attributes with data bag values in templates and variables.

Learn to use Chef data bags to configure the CodeIgniter recipe by querying the database cookbook, replacing attributes, and deploying updated cookbooks while preparing for data bag encryption.

Learn to use Chef encrypted data bags to securely store credentials with a secret key, decrypt them, and access them in cookbooks and recipes.

Explore configuration management with Chef, from why you need it to building a lamp stack with ChefDK and knife, using supermarket cookbooks to bootstrap servers.