How to configure deployment defined in yaml to write Greengrass & component logs to CloudWatch logs?

Question

Hello,

I have a deployment defined in yaml that I am trying to extend to write Greengrass & component logs to CloudWatch logs. I can't seem to get the syntax right. I have:

```
targetArn: 
deploymentName: 
components: 
  aws.greengrass.Nucleus:
    componentVersion: '2.12.6'
  aws.greengrass.TokenExchangeService:
    componentVersion: '2.0.3'
  aws.greengrass.DockerApplicationManager: 
    componentVersion: '2.0.11'
    runWith:
      posixUser: 'root'
  : 
    componentVersion: '0.1.0'
    runWith:
      posixUser: 'root'
  aws.greengrass.LogManager:
    componentVersion: '2.3.0'
    configurationUpdate:
      merge: 
        logsUploaderConfiguration:
          systemLogsConfiguration:
            uploadToCloudWatch: true
          componentLogsConfigurationMap:
            - 
```
When I try to update my deployment with the AWS CLI V2 command:
```
aws greengrassv2 create-deployment --cli-input-yaml file:///deployment.yml
```
I get the error:
```
Parameter validation failed:
Invalid type for parameter components.aws.greengrass.LogManager.configurationUpdate.merge, value: {'logsUploaderConfiguration': {'systemLogsConfiguration': {'uploadToCloudWatch': True}, 'componentLogsConfigurationMap': ['']}}, type: , valid types: 
```
What am I doing wrong?

Yaniv Rozenboim · Accepted Answer

As per [documentation](https://docs.aws.amazon.com/greengrass/v2/developerguide/create-deployments.html):

> Merge updates (merge) – (Optional) A JSON document that defines the configuration values to merge onto the target device. **You must serialize the JSON document as a string**. For more information, see Merge updates.

You need to convert the `merge` section to be a JSON string. Like the following:
```
targetArn: 
deploymentName: 
components: 
  aws.greengrass.Nucleus:
    componentVersion: '2.12.6'
  aws.greengrass.TokenExchangeService:
    componentVersion: '2.0.3'
  aws.greengrass.DockerApplicationManager: 
    componentVersion: '2.0.11'
    runWith:
      posixUser: 'root'
  : 
    componentVersion: '0.1.0'
    runWith:
      posixUser: 'root'
  aws.greengrass.LogManager:
    componentVersion: '2.3.0'
    configurationUpdate:
      merge: |
        {
          "logsUploaderConfiguration": {
            "systemLogsConfiguration": {
              "uploadToCloudWatch": true
            },
            "componentLogsConfigurationMap": [
              ""
            ]
          }
        }
```

mpung · Answer

Yaniv,

Thank you for the pointing that out in the docs and the help, that did the trick.

How to configure deployment defined in yaml to write Greengrass & component logs to CloudWatch logs?

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