Kumogata: Post command

template.rb

Resources do
  MyInstance do
    Type "AWS::EC2::Instance"

    Properties do
      ImageId "ami-0d13700c"
      InstanceType "t1.micro"
      KeyName "XXX"

      NetworkInterfaces [
        _{
          DeviceIndex 0
          SubnetId "subnet-XXXXXXXX"
          AssociatePublicIpAddress true
        }
      ]

      UserData do
        Fn__Base64 (<<-EOS).fn_join
          #!/bin/bash
          /opt/aws/bin/cfn-signal -e 0 '<%= Ref "WaitHandle" %>'
        EOS
      end
    end # Properties
  end

  WaitHandle do
    Type "AWS::CloudFormation::WaitConditionHandle"
  end

  WaitCondition do
    Type "AWS::CloudFormation::WaitCondition"
    DependsOn "MyInstance"

    Properties do
      Handle { Ref "WaitHandle" }
      Timeout 300
    end
  end
end

Outputs do
  MyPublicIp do
    Value { Fn__GetAtt "MyInstance", "PublicIp" }
  end
end

_post do
  my_shell_command do
    command <<-EOS
      echo <%= Key "MyPublicIp" %>
    EOS
  end
  my_ssh_command do
    ssh do
      host { Key "MyPublicIp" }
      user "ec2-user"
    end
    command <<-EOS
      hostname
    EOS
  end
end