What is Chef Recipe?

A recipe is the most fundamental configuration element within the organization. A recipe:

• Is authored using Ruby, which is a programming language designed to read and behave in a predictable manner
• Is mostly a collection of resources, defined using patterns (resource names, attribute-value pairs, and actions); helper code is added around this using Ruby, when needed
• Must define everything that is required to configure part of a system
• Must be stored in a cookbook
• May be included in another recipe
• May use the results of a search query and read the contents of a data bag (including an encrypted data bag)
• May have a dependency on one (or more) recipes
• Must be added to a run-list before it can be used by Chef Infra Client
• Is always executed in the same order as listed in a run-list

	yum_package 'httpd' do
	action :install
	end
	file 'index.html' do
	content "Hello everyone from DevOpsSchool"
	end
	cookbook_file '/var/www/html/index.html' do
	source "index.html"
	action :create
	end
	service 'httpd' do
	action :start
	end
	bash 'extract_module' do
	code <<-EOH
	cp index.html /var/www/html/index.html
	EOH
	end

view raw first.rb hosted with by GitHub

	node.default['main']['doc_root'] = "/vagrant/web"
	execute "apt-get update" do
	command "apt-get update"
	end
	apt_package "apache2" do
	action :install
	end
	service "apache2" do
	action [ :enable, :start ]
	end
	directory node['main']['doc_root'] do
	owner 'www-data'
	group 'www-data'
	mode '0644'
	action :create
	end
	cookbook_file "#{node['main']['doc_root']}/index.html" do
	source 'index.html'
	owner 'www-data'
	group 'www-data'
	action :create
	end
	template "/etc/apache2/sites-available/000-default.conf" do
	source "vhost.erb"
	variables({ :doc_root => node['main']['doc_root'] })
	action :create
	notifies :restart, resources(:service => "apache2")
	end

view raw recipe.rb hosted with by GitHub

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Chef Essential Tutorial By Rajesh Kumar in 2020 – Session-1

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Rajesh Kumar

I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I am working at Cotocus. I blog tech insights at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at I reviewed , and SEO strategies at Wizbrand. 

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