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**Example 1: To describe scaling activities for a scalable target**
The following ``describe-scaling-activities`` example displays details for th the scaling activities for an Amazon ECS service called `web-app` that is running in the `default` cluster. ::
aws application-autoscaling describe-scaling-activities \
--service-namespace ecs \
--scalable-dimension ecs:service:DesiredCount \
--resource-id service/default/web-app
Output::
{
"ScalingActivities": [
{
"ScalableDimension": "ecs:service:DesiredCount",
"Description": "Setting desired count to 1.",
"ResourceId": "service/default/web-app",
"ActivityId": "e6c5f7d1-dbbb-4a3f-89b2-51f33e766399",
"StartTime": 1462575838.171,
"ServiceNamespace": "ecs",
"EndTime": 1462575872.111,
"Cause": "monitor alarm web-app-cpu-lt-25 in state ALARM triggered policy web-app-cpu-lt-25",
"StatusMessage": "Successfully set desired count to 1. Change successfully fulfilled by ecs.",
"StatusCode": "Successful"
}
]
}
**Example 2: To describe scaling activities triggered by scheduled actions**
The following ``describe-scaling-activities`` example describes the scaling activities for the specified DynamoDB table. The output shows scaling activities triggered by two different scheduled actions::
aws application-autoscaling describe-scaling-activities \
--service-namespace dynamodb \
--scalable-dimension dynamodb:table:WriteCapacityUnits \
--resource-id table/my-table
Output::
{
"ScalingActivities": [
{
"ScalableDimension": "dynamodb:table:WriteCapacityUnits",
"Description": "Setting write capacity units to 10.",
"ResourceId": "table/my-table",
"ActivityId": "4d1308c0-bbcf-4514-a673-b0220ae38547",
"StartTime": 1561574415.086,
"ServiceNamespace": "dynamodb",
"EndTime": 1561574449.51,
"Cause": "maximum capacity was set to 10",
"StatusMessage": "Successfully set write capacity units to 10. Change successfully fulfilled by dynamodb.",
"StatusCode": "Successful"
},
{
"ScalableDimension": "dynamodb:table:WriteCapacityUnits",
"Description": "Setting min capacity to 5 and max capacity to 10",
"ResourceId": "table/my-table",
"ActivityId": "f2b7847b-721d-4e01-8ef0-0c8d3bacc1c7",
"StartTime": 1561574414.644,
"ServiceNamespace": "dynamodb",
"Cause": "scheduled action name my-second-scheduled-action was triggered",
"StatusMessage": "Successfully set min capacity to 5 and max capacity to 10",
"StatusCode": "Successful"
},
{
"ScalableDimension": "dynamodb:table:WriteCapacityUnits",
"Description": "Setting write capacity units to 15.",
"ResourceId": "table/my-table",
"ActivityId": "d8ea4de6-9eaa-499f-b466-2cc5e681ba8b",
"StartTime": 1561574108.904,
"ServiceNamespace": "dynamodb",
"EndTime": 1561574140.255,
"Cause": "minimum capacity was set to 15",
"StatusMessage": "Successfully set write capacity units to 15. Change successfully fulfilled by dynamodb.",
"StatusCode": "Successful"
},
{
"ScalableDimension": "dynamodb:table:WriteCapacityUnits",
"Description": "Setting min capacity to 15 and max capacity to 20",
"ResourceId": "table/my-table",
"ActivityId": "3250fd06-6940-4e8e-bb1f-d494db7554d2",
"StartTime": 1561574108.512,
"ServiceNamespace": "dynamodb",
"Cause": "scheduled action name my-first-scheduled-action was triggered",
"StatusMessage": "Successfully set min capacity to 15 and max capacity to 20",
"StatusCode": "Successful"
}
]
}
For more information, see `Scheduled Scaling <https://docs.aws.amazon.com/autoscaling/application/userguide/application-auto-scaling-scheduled-scaling.html>`__ in the *Application Auto Scaling User Guide*.
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