# 查找有关 Amazon RDS 的复制备份的信息
<a name="AutomatedBackups.Replicating.Describe"></a>

您可以使用以下 CLI 命令查找有关复制备份的信息：
+ [https://docs.amazonaws.cn/cli/latest/reference/rds/describe-source-regions.html](https://docs.amazonaws.cn/cli/latest/reference/rds/describe-source-regions.html)
+ [https://docs.amazonaws.cn/cli/latest/reference/rds/describe-db-instances.html](https://docs.amazonaws.cn/cli/latest/reference/rds/describe-db-instances.html)
+ [https://docs.amazonaws.cn/cli/latest/reference/rds/describe-db-instance-automated-backups.html](https://docs.amazonaws.cn/cli/latest/reference/rds/describe-db-instance-automated-backups.html)

以下 `describe-source-regions` 示例列出了其中的自动备份可以复制到美国西部（俄勒冈州）目标区域的源 Amazon Web Services 区域。

**如欲显示有关源区域的信息**
+ 运行以下命令。

  ```
  aws rds describe-source-regions --region us-west-2
  ```

输出显示备份可以从 US East (N. Virginia) 而不能从 美国东部（俄亥俄州） 或 美国西部（加利福尼亚北部） 复制到 美国西部（俄勒冈州） 中。

```
{
    "SourceRegions": [
        ...
        {
            "RegionName": "us-east-1",
            "Endpoint": "https://rds.us-east-1.amazonaws.com",
            "Status": "available",
            "SupportsDBInstanceAutomatedBackupsReplication": true
        },
        {
            "RegionName": "us-east-2",
            "Endpoint": "https://rds.us-east-2.amazonaws.com",
            "Status": "available",
            "SupportsDBInstanceAutomatedBackupsReplication": false
        },
            "RegionName": "us-west-1",
            "Endpoint": "https://rds.us-west-1.amazonaws.com",
            "Status": "available",
            "SupportsDBInstanceAutomatedBackupsReplication": false
        }
    ]
}
```

以下 `describe-db-instances` 示例显示了数据库实例的自动备份。

**如欲显示数据库实例的复制备份**
+ 运行以下命令之一。

  对于 Linux、macOS 或 Unix：

  ```
  aws rds describe-db-instances \
  --db-instance-identifier mydatabase
  ```

  对于 Windows：

  ```
  aws rds describe-db-instances ^
  --db-instance-identifier mydatabase
  ```

输出包括复制备份。

```
{
    "DBInstances": [
        {
            "StorageEncrypted": false,
            "Endpoint": {
                "HostedZoneId": "Z1PVIF0B656C1W",
                "Port": 1521,
            ...

            "BackupRetentionPeriod": 7,
            "DBInstanceAutomatedBackupsReplications": [{"DBInstanceAutomatedBackupsArn": "arn:aws:rds:us-east-1:123456789012:auto-backup:ab-L2IJCEXJP7XQ7HOJ4SIEXAMPLE"}]
        }
    ]
}
```

以下 `describe-db-instance-automated-backups` 示例显示了数据库实例的自动备份。

**如欲显示数据库实例的自动备份**
+ 运行以下命令之一。

  对于 Linux、macOS 或 Unix：

  ```
  aws rds describe-db-instance-automated-backups \
  --db-instance-identifier mydatabase
  ```

  对于 Windows：

  ```
  aws rds describe-db-instance-automated-backups ^
  --db-instance-identifier mydatabase
  ```

输出显示了 美国西部（俄勒冈州） 中的源数据库实例和自动备份，且备份已复制到 US East (N. Virginia)。

```
{
    "DBInstanceAutomatedBackups": [
        {
            "DBInstanceArn": "arn:aws:rds:us-west-2:868710585169:db:mydatabase",
            "DbiResourceId": "db-L2IJCEXJP7XQ7HOJ4SIEXAMPLE",
            "DBInstanceAutomatedBackupsArn": "arn:aws:rds:us-west-2:123456789012:auto-backup:ab-L2IJCEXJP7XQ7HOJ4SIEXAMPLE",
            "BackupRetentionPeriod": 7,
            "DBInstanceAutomatedBackupsReplications": [{"DBInstanceAutomatedBackupsArn": "arn:aws:rds:us-east-1:123456789012:auto-backup:ab-L2IJCEXJP7XQ7HOJ4SIEXAMPLE"}]
            "Region": "us-west-2",
            "DBInstanceIdentifier": "mydatabase",
            "RestoreWindow": {
                "EarliestTime": "2020-10-26T01:09:07Z",
                "LatestTime": "2020-10-31T19:09:53Z",
            }
            ...
        }
    ]
}
```

以下 `describe-db-instance-automated-backups` 示例使用 `--db-instance-automated-backups-arn` 选项来显示目标区域中的复制备份。

**如欲显示复制备份**
+ 运行以下命令之一。

  对于 Linux、macOS 或 Unix：

  ```
  aws rds describe-db-instance-automated-backups \
  --db-instance-automated-backups-arn "arn:aws:rds:us-east-1:123456789012:auto-backup:ab-L2IJCEXJP7XQ7HOJ4SIEXAMPLE"
  ```

  对于 Windows：

  ```
  aws rds describe-db-instance-automated-backups ^
  --db-instance-automated-backups-arn "arn:aws:rds:us-east-1:123456789012:auto-backup:ab-L2IJCEXJP7XQ7HOJ4SIEXAMPLE"
  ```

输出显示了 美国西部（俄勒冈州） 中的源数据库实例，以及 US East (N. Virginia) 中的复制备份。

```
{
    "DBInstanceAutomatedBackups": [
        {
            "DBInstanceArn": "arn:aws:rds:us-west-2:868710585169:db:mydatabase",
            "DbiResourceId": "db-L2IJCEXJP7XQ7HOJ4SIEXAMPLE",
            "DBInstanceAutomatedBackupsArn": "arn:aws:rds:us-east-1:123456789012:auto-backup:ab-L2IJCEXJP7XQ7HOJ4SIEXAMPLE",
            "Region": "us-west-2",
            "DBInstanceIdentifier": "mydatabase",
            "RestoreWindow": {
                "EarliestTime": "2020-10-26T01:09:07Z",
                "LatestTime": "2020-10-31T19:01:23Z"
            },
            "AllocatedStorage": 50,
            "BackupRetentionPeriod": 7,
            "Status": "replicating",
            "Port": 1521,
            ...
        }
    ]
}
```