Add cross-account Alarms on cloudwatch describe-alarms

[jerry42]

Describe the feature

When using cloudwatch describe-alarms from CLI, display cross account shared Alarms with the monitoring account.

Use Case

I would like to use a monitoring account with all alarms from other accounts in the organization and be able to list those alarms using AWS CLI (and/or boto3)

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CLI version used

aws-cli/2.23.8 Python/3.12.8

Environment details (OS name and version, etc.)

Darwin/24.2.0 source/arm64

[RyanFitzSimmonsAK]

Hi @jerry42, thanks for reaching out. This type of feature request would need to be implemented by the service team, rather than the Boto3 or AWS CLI team. I've forwarded this feature request to the CloudWatch team for their consideration. Please refer to an SDK or AWS CLI changelog for updates about this going forward. Thanks!

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[RyanFitzSimmonsAK]

Update to my previous comment, it seems like this can be achieved if you use AssumeRole to assume your cross-account sharing role and call DescribeAlarms. However, this is limited to accounts that have a sharing role that trusts your monitoring account.

[jerry42]

Hi @RyanFitzSimmonsAK,

Thanks for your answer I thought about using AssumeRole but I have a lot of accounts and it would require several update. Thanks for forwarding to the CloudWatch, hope they will take my request in consideration !