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# 針對 CloudWatch Observability Admin 的條件索引鍵
<a name="condition-keys-observabilityadmin"></a>

您可以使用 IAM 政策，透過條件索引鍵控制對 Amazon CloudWatch Observability Admin 資源和動作的存取權。

Observability Admin 具有下列條件索引鍵：


| 條件索引鍵 | 說明 | Type | 
| --- | --- | --- | 
|  CentralizationSourceRegions  |  ArrayOfString  |  依請求中傳遞的來源區域來篩選存取權  | 
|  CentralizationDestinationRegion  |  String  |  透過請求中傳遞的目的地區域來篩選存取權  | 
|  CentralizationBackupRegion  |  String  |  透過請求中傳遞的備份區域來篩選存取權  | 

## CentralizationSourceRegions
<a name="condition-keys-centralizationsourceregions"></a>

依針對集中化規則指定的備份區域篩選存取權。
+ *可用性*：此索引鍵適用於下列資源類型：organization-centralization-rule
+ *值類型*：字串

**Example 包含 observabilityadmin:CentralizationBackupRegion 的 JSON 政策範例**    
****  

```
{
  "Version":"2012-10-17",		 	 	 
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "cloudwatch:PutMetricData",
      "Resource": "*",
      "Condition": {
        "StringEquals": {
        "aws:RequestedRegion": "us-east-1"
        }
      }
    }
  ]
}
```

## CentralizationDestinationRegion
<a name="condition-keys-centralizationdestinationregion"></a>

依針對集中化規則指定的目的地區域篩選存取權。
+ *可用性*：此索引鍵適用於下列資源類型：organization-centralization-rule
+ *值類型*：字串

**Example 包含 observabilityadmin:CentralizationDestinationRegion 的 JSON 政策範例**    
****  

```
{
  "Version":"2012-10-17",		 	 	 
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "cloudwatch:PutMetricData",
      "Resource": "*",
      "Condition": {
        "StringEquals": {
        "aws:RequestedRegion": "us-east-1"
        }
      }
    }
  ]
}
```

## CentralizationBackupRegion
<a name="condition-keys-centralizationbackupregion"></a>

依針對集中化規則指定的來源區域篩選存取權。
+ *可用性*：此索引鍵適用於下列資源類型：organization-centralization-rule
+ *值類型*：字串清單

**Example 包含 observabilityadmin:CentralizationSourceRegions 的 JSON 政策範例**    
****  

```
{
  "Version":"2012-10-17",		 	 	 
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "cloudwatch:PutMetricData",
      "Resource": "*",
      "Condition": {
        "StringEquals": {
        "aws:RequestedRegion": ["us-east-1", "us-east-1"]
        }
      }
    }
  ]
}
```