# CloudWatch Metrics for Bring Your Own Containers
<a name="model-monitor-byoc-cloudwatch"></a>

**Note**  
Amazon SageMaker Model Monitor is no longer open to new customers. Existing customers can continue to use the service as normal. AWS continues to invest in security and availability improvements for Model Monitor, but we do not plan to introduce new features. For more information, see [Amazon SageMaker Model Monitor availability change](model-monitor-availability-change.md). 

If the `publish_cloudwatch_metrics` value is `Enabled` in the `Environment` map in the `/opt/ml/processing/processingjobconfig.json` file, the container code emits Amazon CloudWatch metrics in this location: `/opt/ml/output/metrics/cloudwatch`. 

The schema for this file is closely based on the CloudWatch `PutMetrics` API. The namespace is not specified here. It defaults to the following:
+ `For real-time endpoints: /aws/sagemaker/Endpoint/data-metrics`
+ `For batch transform jobs: /aws/sagemaker/ModelMonitoring/data-metrics`

However, you can specify dimensions. We recommend you add the following dimensions at minimum:
+ `Endpoint` and `MonitoringSchedule` for real-time endpoints
+ `MonitoringSchedule` for batch transform jobs

The following JSON snippets show how to set your dimensions.

For a real-time endpoint, see the following JSON snippet which includes the `Endpoint` and `MonitoringSchedule` dimensions:

```
{ 
    "MetricName": "", # Required
    "Timestamp": "2019-11-26T03:00:00Z", # Required
    "Dimensions" : [{"Name":"Endpoint","Value":"endpoint_0"},{"Name":"MonitoringSchedule","Value":"schedule_0"}]
    "Value": Float,
    # Either the Value or the StatisticValues field can be populated and not both.
    "StatisticValues": {
        "SampleCount": Float,
        "Sum": Float,
        "Minimum": Float,
        "Maximum": Float
    },
    "Unit": "Count", # Optional
}
```

For a batch transform job, see the following JSON snippet which includes the `MonitoringSchedule` dimension:

```
{ 
    "MetricName": "", # Required
    "Timestamp": "2019-11-26T03:00:00Z", # Required
    "Dimensions" : [{"Name":"MonitoringSchedule","Value":"schedule_0"}]
    "Value": Float,
    # Either the Value or the StatisticValues field can be populated and not both.
    "StatisticValues": {
        "SampleCount": Float,
        "Sum": Float,
        "Minimum": Float,
        "Maximum": Float
    },
    "Unit": "Count", # Optional
}
```