我知道可以通过使用条件来有条件地(还能怎么说呢?)创建资源。
然而,我正在尝试找到一种方法,以有条件地创建资源的属性;
在我的情况下,我正在创建一个子网中的多个EC2
实例,并将默认的公共IP分配设置为false
。
然而有时出于调试目的,我希望我的实例获得公共IP。
现在我必须注释或取消注释下面的SG/Subnet和NetworkInterfaces
属性(它们不能同时存在)
myEC2:
Type: AWS::EC2::Instance
Metadata:
Comment: My EC2 Instance
AWS::CloudFormation::Init:
config:
commands:
01_provision:
command:
!Sub |
sed -i "s/somestring/${somevar}/" /some/path/
CreationPolicy:
ResourceSignal:
Timeout: PT4M
Properties:
ImageId: !FindInMap [ MyAamiMap, 'myami', amiid ]
InstanceType: "t2.2xlarge"
# SubnetId: !Ref SBNDemo1
# SecurityGroupIds: [!Ref SGInternalDemo]
NetworkInterfaces:
- AssociatePublicIpAddress: "true"
DeviceIndex: "0"
GroupSet:
- Ref: "SGInternalDemo"
SubnetId:
Ref: "SBNDemo1"
UserData:
"Fn::Base64":
!Sub |
#!/bin/bash -xe
# Start cfn-init
/usr/local/bin/cfn-init -s ${AWS::StackId} -r myEC2 --region ${AWS::Region} || echo 'Failed to run cfn-init'
# All done so signal success
/usr/local/bin/cfn-signal -e $? --stack ${AWS::StackId} --resource myEC2 --region ${AWS::Region}
有什么建议吗?