MonitorInstances - Amazon Elastic Compute Cloud


Enables detailed monitoring for a running instance. Otherwise, basic monitoring is enabled. For more information, see Monitor your instances using CloudWatch in the Amazon EC2 User Guide.

To disable detailed monitoring, see UnmonitorInstances.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.


Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

Type: Boolean

Required: No


The IDs of the instances.

Type: Array of strings

Required: Yes

Response Elements

The following elements are returned by the service.


The monitoring information.

Type: Array of InstanceMonitoring objects


The ID of the request.

Type: String


For information about the errors that are common to all actions, see Common client error codes.



This example enables detailed monitoring for the specified two instances.

Sample Request &InstanceId.1=i-1234567890abcdef0 &InstanceId.2=i-0598c7d356eba48d7 &AUTHPARAMS

Sample Response

<MonitorInstancesResponse xmlns=""> <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> <instancesSet> <item> <instanceId>i-1234567890abcdef0</instanceId> <monitoring> <state>pending</state> </monitoring> </item> <item> <instanceId>i-0598c7d356eba48d7</instanceId> <monitoring> <state>pending</state> </monitoring> </item> </instancesSet> </MonitorInstancesResponse>

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: