troposphereでCloudFormationのテンプレートを作成する。 ref: https://qiita.com/kooohei/items/17f6fa6facacfd0201b6

file3.txt

>>> from troposphere import Ref, Template
>>> import troposphere.ec2 as ec2
>>> t = Template()
>>> instance = ec2.Instance("myinstance", ImageId="ami-a77c30c1", InstanceType="t1.micro")
>>> t.add_resource(instance)
<troposphere.ec2.Instance object at 0x107c427b8>
>>> print(t.to_yaml())
Resources:
  myinstance:
    Properties:
      ImageId: ami-a77c30c1
      InstanceType: t1.micro
    Type: AWS::EC2::Instance

file4.txt

>>> from troposphere import Ref, Template
>>> import troposphere.ec2 as ec2
>>> t = Template()
>>> instance = t.add_resource(ec2.Instance("myinstance", ImageId="ami-a77c30c1", InstanceType="t1.micro"))
>>> Ref(instance)
<troposphere.Ref object at 0x10b2647f0>
>>> print(t.to_yaml())
Resources:
  myinstance:
    Properties:
      ImageId: ami-a77c30c1
      InstanceType: t1.micro
    Type: AWS::EC2::Instance

file5.txt

>>> import troposphere.ec2 as ec2
>>> ec2.Instance("ec2instance", image="i-XXXX")
Traceback (most recent call last):
・・・
AttributeError: AWS::EC2::Instance object does not support attribute image

file6.txt

>>> from troposphere import Template
>>> import troposphere.ec2 as ec2
>>> t = Template()
>>> t.add_resource(ec2.Instance("ec2instance", InstanceType="m3.medium"))
<troposphere.ec2.Instance object at 0x110965780>
>>> print(t.to_json())
Traceback (most recent call last):
・・・
ValueError: Resource ImageId required in type AWS::EC2::Instance (title: ec2instance)

json

>>> from troposphere import Ref, Template
>>> import troposphere.ec2 as ec2
>>> t = Template()
>>> instance = ec2.Instance("myinstance")
>>> instance.ImageId = "ami-a77c30c1"
>>> instance.InstanceType = "t1.micro"
>>> t.add_resource(instance)
<troposphere.ec2.Instance object at 0x1057597b8>
>>> print(t.to_json())
{
    "Resources": {
        "myinstance": {
            "Properties": {
                "ImageId": "ami-a77c30c1",
                "InstanceType": "t1.micro"
            },
            "Type": "AWS::EC2::Instance"
        }
    }
}

yaml

>>> print(t.to_yaml())
Resources:
  myinstance:
    Properties:
      ImageId: ami-a77c30c1
      InstanceType: t1.micro
    Type: AWS::EC2::Instance

インストール

$ pip install troposphere
Collecting troposphere
  Downloading troposphere-2.2.1.tar.gz (115kB)
    100% |████████████████████████████████| 122kB 3.0MB/s 
Collecting cfn_flip>=0.2.5 (from troposphere)
  Downloading cfn_flip-1.0.3.tar.gz
Collecting Click (from cfn_flip>=0.2.5->troposphere)
  Downloading click-6.7-py2.py3-none-any.whl (71kB)
    100% |████████████████████████████████| 71kB 4.4MB/s 
Requirement already satisfied: PyYAML in /Users/kohei/.pyenv/versions/3.6.2/lib/python3.6/site-packages (from cfn_flip>=0.2.5->troposphere)
Requirement already satisfied: six in /Users/kohei/.pyenv/versions/3.6.2/lib/python3.6/site-packages (from cfn_flip>=0.2.5->troposphere)
Installing collected packages: Click, cfn-flip, troposphere
  Running setup.py install for cfn-flip ... done
  Running setup.py install for troposphere ... done
Successfully installed Click-6.7 cfn-flip-1.0.3 troposphere-2.2.1