Database Migration Replication Instance Status

AWS Database Migration Service (DMS)의 Replication Instance 상태에 대한 정의는 다음과 같습니다:

1. Available: 복제 인스턴스가 사용 가능한 상태입니다.
2. Creating: 복제 인스턴스가 생성 중인 상태입니다.
3. Deleting: 복제 인스턴스가 삭제 중인 상태입니다.
4. Modifying: 복제 인스턴스가 수정 중인 상태입니다.
5. Upgrading: 복제 인스턴스가 업그레이드 중인 상태입니다.
6. Rebooting: 복제 인스턴스가 재부팅 중인 상태입니다.
7. Resetting-master-credentials: 마스터 자격 증명을 재설정 중인 상태입니다.
8. Maintenance: 복제 인스턴스가 유지 보수 중인 상태입니다.
9. Deleted: 복제 인스턴스가 삭제된 상태입니다.
10. Failed: 복제 인스턴스 작업이 실패한 상태입니다.
11. Storage-full: 복제 인스턴스의 스토리지가 가득 찬 상태입니다.
12. Incompatible-credentials: 자격 증명이 호환되지 않는 상태입니다.
13. Incompatible-network: 네트워크가 호환되지 않는 상태입니다.

이러한 상태들은 복제 인스턴스의 현재 상태를 나타내며, AWS DMS에서 복제 인스턴스를 관리하고 모니터링하는 데 중요한 정보를 제공합니다.
Sources
ReplicationInstance - AWS Database Migration Service

Here are the definitions of AWS DMS replication instance statuses based on official AWS documentation and technical sources:

1. Available

The replication instance is fully operational and ready to handle migration tasks. This is the normal state for a healthy instance.

2. Creating

The instance is in the process of being provisioned. This occurs during initial setup or when modifying instance configurations (e.g., resizing).

3. Rebooting

A temporary state during a reboot operation. This causes a momentary outage but preserves data. Tasks resume after the reboot completes.

4. Resetting-master-credentials

Does not apply to AWS DMS.

5. Maintenance

The instance is undergoing scheduled updates during its weekly maintenance window. Most updates are applied within 30 minutes, but larger changes may take longer.

6. Deleted/Deleting

• Deleting: The instance is being removed. All associated tasks must be stopped first.
• Deleted: The instance has been successfully removed.

7. Failed

The instance encountered an unrecoverable error (e.g., hardware failure, incompatible settings). Requires manual intervention or recreation.

8. Storage-full

The allocated storage is exhausted, often due to excessive task logs or cached CDC data. Tasks may halt until storage is increased or logs are deleted.

9. Incompatible-credentials

Does not apply to AWS DMS service.

10. Incompatible-network

Network configuration issues (e.g., missing free ips) prevent communication with source/target databases.

Key Observations:

• Transient states include creating, rebooting, modifying, and maintenance.
• Critical states like failed and storage-full issues require troubleshooting.
• The full list of statuses is defined in the AWS DMS API.

For resolution steps, refer to AWS troubleshooting guides or consult the Logs & Events tab in the AWS Console.