CodeDeploy to update Auto scaling launch template

Question

Hi,
Is this possible to update the auto scaling group launch template with new code built with aws code build and I need to deploy that new code via codedeploy to a launch instance.
Here I already had the auto scaling group and launch template.
I need a example Cloud formation script to build the above solution

Answer

Hello.

Why not just deploy the code directly to EC2 in the AutoScaling group instead of updating the launch template?  
https://docs.aws.amazon.com/codedeploy/latest/userguide/deployment-groups-create-blue-green.html

Blue/Green deployment of AutoScaling groups is not supported by CloudFormation, so you will need to create Lambda etc. as shown in the blog below.  
https://medium.com/@greeshu.renu/blue-green-deployment-using-aws-cloudformation-bd936dc0fe01

Answer

Hello,

I'm no expert, but I think all you have to do is rename your CodeDeploy.

CloudFormation will create a new CodeDeploy for you by keeping resources that are currently in use.
Of course, make sure you don't rename your other resources.

For exemple, if tou have this code:

```
MyDeploy: 
  Type: AWS::CodeDeploy::Application 
  Properties:
    ComputePlatform: Lambda
```

You can do that:

```
MyDeploy2: 
  Type: AWS::CodeDeploy::Application 
  Properties:
    ComputePlatform: Lambda
```

**Please don't rename other ressources because CloudFormation will destroy and create new ones.**

@Riku_Kobayashi Can you tell me if I'm wrong or not? (It's my first comment on re:Post)

CodeDeploy to update Auto scaling launch template

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