Monitor notebook instances on cloudwatch dashboard

Hi Lak, To grab such details on SageMaker notebook instances, boto3 SageMaker client API, list_notebook_instances can be used. This API returns a list of notebook instances as below with their metadata as well.

{
    'NextToken': 'string',
    'NotebookInstances': [
        {
            'NotebookInstanceName': 'string',
            'NotebookInstanceArn': 'string',
            'NotebookInstanceStatus': 'Pending'|'InService'|'Stopping'|'Stopped'|'Failed'|'Deleting'|'Updating',
            'Url': 'string',
            'InstanceType': '',
            'CreationTime': datetime(2015, 1, 1),
            'LastModifiedTime': datetime(2015, 1, 1),
            'NotebookInstanceLifecycleConfigName': 'string',
            'DefaultCodeRepository': 'string',
            'AdditionalCodeRepositories': [
                'string',
            ]
        },
    ]
}