create_swapfile recipe

default.rb

swapfile path  = '/mnt/swapfile'
swapfile_bs    = '1M'
swapfile_count = '1024'

execute "create_swapfile" do
  Chef::Log.info "About to create swapfile if it doesn't exist" 
  command %Q{ 
    sudo dd if=/dev/zero of=#{swapfile_path} bs=#{swapfile_bs} count=#{swapfile_count} && \
    sudo mkswap #{swapfile_path} && \
    sudo swapon #{swapfile_path}
  }
  not_if { File.exists? swapfile_path }
end