cloud-init_chef-zero.yaml

#cloud-init
# https://docs.chef.io/packages.html#enterprise-linux
# vendor chef-repo to /var/lib/chef with cookbooks in /var/lib/chef/cookbooks

yum_repos:
  chef-stable:
    name: chef-stable
    baseurl: https://packages.chef.io/stable-yum/el/7/\$basearch/
    enabled: true
    failovermethod: priority
    gpgcheck: true

bootcmd:
  # Need to run this before 'cc_chef' during 'config' phase
  - rpm --import https://downloads.chef.io/packages-chef-io-public.key  
  # Fix for RHEL 7.2 pySELinux bug: [Errno 2] No such file or directory
  - mkdir -p '/etc/chef' '/var/log/chef' '/var/lib/chef' '/var/cache/chef' '/var/backups/chef' '/var/run/chef'
  # Fix for RHEL 7.3 templater missing
  - yum install -y python-jinja2

chef:
  install_type: packages

  # following two parameters are required by cc_chef
  server_url: "http://127.0.0.1:8889"
  validation_name: system

  # do not run chef, use runcmd instead
  exec: false

  # environment:
  run_list:
    - 'recipe[example]'
  initial_attributes:
    example: only

runcmd:
  # Additional config needed for chef-zero
  - printf "\nchef_zero.enabled true\nchef_repo_path '/var/lib/chef'\n" >> /etc/chef/client.rb
  - chef-client