gistfile1.rb

config.vm.define 'ec2' do |ec2|

          ec2.vm.provider :aws do |aws, override|
                  aws.access_key_id = 'xxx'
                  aws.secret_access_key = 'yyy'
                  aws.keypair_name = 'zzz'
                  aws.region = 'ap-northeast-1'

                  aws.subnet_id = 'subnet-xxxxxxx'
                  aws.private_ip_address = '172.31.15.251'
                  aws.ssh_host_attribute = :private_ip_address

                  aws.security_groups = ['sg-xxxxxxx']

                  aws.ami = 'www'
                  aws.instance_type = 't1.micro'

                  aws.tags = {
                        'Name' => 'test',
                  }
                  override.ssh.username = 'user'
                  override.ssh.private_key_path = './xxx.id_rsa'
          end

          ec2.vm.provision :ansible do |ansible|
                  ansible.playbook = 'main.yml'
          end
  end