Get a list of all managed instance Ids

Hi,

This example command will get list of managed instances.
aws ssm describe-instance-information --filters Key=ResourceType,Values=ManagedInstance --query "InstanceInformationList[].InstanceId" --output text

In addition, you can also filter by IAM role like this:
aws ssm describe-instance-information --filters Key=ResourceType,Values=ManagedInstance Key=IamRole,Values=MyExampleRole --query "InstanceInformationList[].InstanceId" --output text

Hope this helps.

Thanks,
Mani