Basic knife configuration for chef server

knife.rb

### Chef Knife config example
# https://github.com/fnichol/chef-bootstrap-repo/blob/master/.chef/knife.rb
###

# Environment variables required:
# CHEF_SERVER_URL - IP or url of your chef server
# CHEF_USER       - Initial user
# AWS_ACCESS_KEY  - AWS Access ID found here https://portal.aws.amazon.com/gp/aws/securityCredentials
# AWS_SECRET_KEY  - AWS Secrete key found in link above

current_dir = File.dirname(__FILE__)
home_dir    = ENV['HOME']
chef_dir    = "#{home_dir}/.chef"
chefd_dir   = "#{home_dir}/projects/lpos-chef-repo/.chef"

user        = ENV['CHEF_USER']
server_url  = "http://#{ENV['CHEF_SERVER_URL']}:4000"

# path to cookbooks
cookbook_path             ["#{current_dir}/../cookbooks",
                          "#{current_dir}/../site-cookbooks"]

# logging details
log_level                 :info
log_location              STDOUT

# user/client and private key to authenticate to a Chef Server, if needed
node_name                 user

validation_client_name  "chef-validator"
client_key              "#{chefd_dir}/#{user}-client.pem"
validation_key          "#{chefd_dir}/validation.pem"
chef_server_url         "#{server_url}"

# caching options
cache_type                'BasicFile'
cache_options( :path =>   "#{home_dir}/.chef/checksums" )

file_backup_path          "#{chef_dir}/backups"

# new cookbook defaults
cookbook_copyright        ENV['KNIFE_COOKBOOK_COPYRIGHT'] ||
                          %x{git config --get user.name}.chomp
cookbook_email            ENV['KNIFE_COOKBOOK_EMAIL'] ||
                          %x{git config --get user.email}.chomp
cookbook_license          "apachev2"

knife[:aws_access_key_id]     = ENV['AWS_ACCESS_KEY']
knife[:aws_secret_access_key] = ENV['AWS_SECRET_KEY']

# aws ec2 configuration
if ENV['AWS_ACCESS_KEY'] && ENV['AWS_SECRET_KEY']
  ##
  # Searches the ENV hash for keys starting with "AWS_" and converts them
  # to knife config settings. For example:
  #
  #     ENV['AWS_AWS_ACCESS_KEY_ID'] = "abcabc"
  #     ENV['AWS_FLAVOR'] = "t1.small"
  #
  # becomes:
  #
  #     knife[:aws_access_key_id] = "abcabc"
  #     knife[:flavor] = "t1.small"
  aws_attrs = ENV.keys.select { |k| k =~ /^AWS_/ }

  aws_attrs.each do |key|
    knife.send(:[]=, key.sub(/^AWS_/, '').downcase.to_sym, ENV[key])
  end
end