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# 使用 Application Auto Scaling 的定时扩展 AWS CLI
这些示例 AWS CLI 命令描述了使用与 Application Auto Scaling 集成的服务中的资源进行的扩展活动和计划操作。对于不同的可扩展目标，请在 `--service-namespace` 中指定其命名空间，在 `--scalable-dimension` 中指定其可扩展维度，并在 `--resource-id` 中指定其资源 ID。
使用时 AWS CLI，请记住您的命令在 AWS 区域 配置文件中运行。如果您想要在不同的区域中运行命令，可以为配置文件更改默认区域，或者与命令一起使用 `--region` 参数。
**Topics**
+ [描述服务的扩展活动](#describe-scaling-activities-service-namespace)
+ [描述服务的计划操作](#describe-scheduled-actions-service-namespace)
+ [描述可扩展目标的计划操作](#describe-scheduled-actions-scalable-target)
## 描述服务的扩展活动
要查看指定服务命名空间中所有可扩展目标的扩展活动，请使用[describe-scaling-activities](https://docs.aws.amazon.com/cli/latest/reference/application-autoscaling/describe-scaling-activities.html)命令。
以下示例检索与 `dynamodb` 服务命名空间关联的扩缩活动。
**Linux、macOS 或 Unix**
```
aws application-autoscaling describe-scaling-activities --service-namespace dynamodb
```
**Windows**
```
aws application-autoscaling describe-scaling-activities --service-namespace dynamodb
```
**Output**
如果该命令成功，则将返回类似于以下内容的输出。
```
{
"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"
}
]
}
```
要更改此命令以使其仅检索其中一个可扩展目标的扩缩活动，请添加 `--resource-id` 选项。
## 描述服务的计划操作
要描述指定服务命名空间中所有可扩展目标的计划操作，请使用[describe-scheduled-actions](https://docs.aws.amazon.com/cli/latest/reference/application-autoscaling/describe-scheduled-actions.html)命令。
以下示例检索与 `ec2` 服务命名空间关联的计划操作。
**Linux、macOS 或 Unix**
```
aws application-autoscaling describe-scheduled-actions --service-namespace ec2
```
**Windows**
```
aws application-autoscaling describe-scheduled-actions --service-namespace ec2
```
**Output**
如果该命令成功，则将返回类似于以下内容的输出。
```
{
"ScheduledActions": [
{
"ScheduledActionName": "my-one-time-action",
"ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledAction:493a6261-fbb9-432d-855d-3c302c14bdb9:resource/ec2/spot-fleet-request/sfr-107dc873-0802-4402-a901-37294EXAMPLE:scheduledActionName/my-one-time-action",
"ServiceNamespace": "ec2",
"Schedule": "at(2021-01-31T17:00:00)",
"Timezone": "America/New_York",
"ResourceId": "spot-fleet-request/sfr-107dc873-0802-4402-a901-37294EXAMPLE",
"ScalableDimension": "ec2:spot-fleet-request:TargetCapacity",
"ScalableTargetAction": {
"MaxCapacity": 1
},
"CreationTime": 1607454792.331
},
{
"ScheduledActionName": "my-recurring-action",
"ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledAction:493a6261-fbb9-432d-855d-3c302c14bdb9:resource/ec2/spot-fleet-request/sfr-107dc873-0802-4402-a901-37294EXAMPLE:scheduledActionName/my-recurring-action",
"ServiceNamespace": "ec2",
"Schedule": "rate(5 minutes)",
"ResourceId": "spot-fleet-request/sfr-107dc873-0802-4402-a901-37294EXAMPLE",
"ScalableDimension": "ec2:spot-fleet-request:TargetCapacity",
"StartTime": 1604059200.0,
"EndTime": 1612130400.0,
"ScalableTargetAction": {
"MinCapacity": 3,
"MaxCapacity": 10
},
"CreationTime": 1607454949.719
},
{
"ScheduledActionName": "my-one-time-action",
"ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledAction:4bce34c7-bb81-4ecf-b776-5c726efb1567:resource/ec2/spot-fleet-request/sfr-40edeb7b-9ae7-44be-bef2-5c4c8EXAMPLE:scheduledActionName/my-one-time-action",
"ServiceNamespace": "ec2",
"Schedule": "at(2020-12-08T9:36:00)",
"Timezone": "America/New_York",
"ResourceId": "spot-fleet-request/sfr-40edeb7b-9ae7-44be-bef2-5c4c8EXAMPLE",
"ScalableDimension": "ec2:spot-fleet-request:TargetCapacity",
"ScalableTargetAction": {
"MinCapacity": 1,
"MaxCapacity": 3
},
"CreationTime": 1607456031.391
}
]
}
```
## 描述可扩展目标的计划操作
要检索有关指定可扩展目标的计划操作的信息，请在使用[describe-scheduled-actions](https://docs.aws.amazon.com/cli/latest/reference/application-autoscaling/describe-scheduled-actions.html)命令描述计划操作时添加该`--resource-id`选项。
如果您包含 `--scheduled-action-names` 选项并将计划操作的名称指定为其值，则该命令仅返回名称匹配的计划操作，如以下示例所示。
**Linux、macOS 或 Unix**
```
aws application-autoscaling describe-scheduled-actions --service-namespace ec2 \
--resource-id spot-fleet-request/sfr-40edeb7b-9ae7-44be-bef2-5c4c8EXAMPLE \
--scheduled-action-names my-one-time-action
```
**Windows**
```
aws application-autoscaling describe-scheduled-actions --service-namespace ec2 ^
--resource-id spot-fleet-request/sfr-40edeb7b-9ae7-44be-bef2-5c4c8EXAMPLE ^
--scheduled-action-names my-one-time-action
```
**Output**
如果该命令成功，则将返回类似于以下内容的输出。如果为 `--scheduled-action-names` 提供了多个值，则输出包括其名称匹配的所有计划操作。
```
{
"ScheduledActions": [
{
"ScheduledActionName": "my-one-time-action",
"ScheduledActionARN": "arn:aws:autoscaling:us-west-2:123456789012:scheduledAction:4bce34c7-bb81-4ecf-b776-5c726efb1567:resource/ec2/spot-fleet-request/sfr-40edeb7b-9ae7-44be-bef2-5c4c8EXAMPLE:scheduledActionName/my-one-time-action",
"ServiceNamespace": "ec2",
"Schedule": "at(2020-12-08T9:36:00)",
"Timezone": "America/New_York",
"ResourceId": "spot-fleet-request/sfr-40edeb7b-9ae7-44be-bef2-5c4c8EXAMPLE",
"ScalableDimension": "ec2:spot-fleet-request:TargetCapacity",
"ScalableTargetAction": {
"MinCapacity": 1,
"MaxCapacity": 3
},
"CreationTime": 1607456031.391
}
]
}
```