Chef-apply and receipe syntax

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Using chef to work with a resource

1. Download chef development kit from https://downloads.chef.io/chef-dk/
2. Install chef-development kit using rpm
3. Create file hello.rb with following contents

   file 'motd' do
   content 'hello world'
   end

4. Run 'chef-apply hello.rb'
5. Update hello.rb to

   file 'motd' do
   action :delete
   end

6. Again run 'chef-apply hello.rb'

Read more about 'file' resource at https://docs.chef.io/resource_file.html or http://docs.chef.io/chef/resources.html#file

Other resources such as service and package can be learned using http://docs.chef.io/chef/resources.html#service and http://docs.chef.io/chef/resources.html#package

Steps learned from https://learn.chef.io/rhel/configure-a-resource/ and subsequent chapters

Chef cookbook basics

1. Create folder ~/cookbooks and cd to it.
2. Create cookbook using 'chef generate cookbook learn_chef_httpd'
3. Create template in new cookbook using:

   chef generate template learn_chef_httpd index.html

4. Update learn_chef_httpd/recipes/default.rb with following

   package 'httpd'
   
   service 'httpd' do
   action [:start, :enable]
   end
   
   template '/var/www/html/index.html' do
   source 'index.html.erb'
   end
   
   service 'iptables' do
   action :stop
   end

5. chef-client --local-mode --runlist 'recipe[learn_chef_httpd]'

Steps learned from https://learn.chef.io/rhel/make-your-recipe-more-manageable/

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