인프런 커뮤니티 질문&답변
작성한 질문수
47. EC2 사이즈 변경 문의
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47. (실습포함) EC2 사이즈 변경 과정 중 실패 하여 글 남깁니다. 아래 과정에서 실패가 발생하였습니다.
t2.medium 인스턴스 중지 -> 스냅샷 -> AMI 생성
AMI -> ami 로 인스턴스 시작 -> m7g.medium 선택 후 생성(기타 인바운드, 아웃바운드는 모두 열림으로 생성)
인스턴스 -> 생성된 인스턴스(m7g.medium) 선택 -> 연결 -> 실패(아래 로그)
연결 실패로, 시스템 로그 확인(아래 4번 인스턴스 로그)
3번 실패 에러
Failed to connect to your instance
Error establishing SSH connection to your instance. Try again later.4번 인스턴스 로그
UEFI firmware (version built at 09:00:00 on Nov 1 2018) [2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[0m[35m[40m[0m[37m[40mNo bootable device found. Dropping to the EFI Shell. Exiting the UEFI shell will restart the system.[2J[01;01H[01;01HUEFI Interactive Shell v2.2 EDK II UEFI v2.70 (EDK II, 0x00010000) [1m[33m[40mMapping table[0m[37m[40m [1m[33m[40m FS0:[0m[37m[40m [1m[37m[40mAlias(s):[0m[37m[40mHD0fd:;BLK3: PciRoot(0x0)/Pci(0x4,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)/HD(128,GPT,6757D47D-EB20-4D37-B258-B2BBDAC921FF,0x800,0x5000) [1m[33m[40m BLK0:[0m[37m[40m [1m[37m[40mAlias(s):[0m[37m[40m PciRoot(0x0)/Pci(0x4,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00) [1m[33m[40m BLK1:[0m[37m[40m [1m[37m[40mAlias(s):[0m[37m[40m PciRoot(0x0)/Pci(0x4,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)/HD(1,GPT,3DDB972E-155C-4F75-A42C-4007A119B4C1,0x6000,0xFF9FDF) [1m[33m[40m BLK2:[0m[37m[40m [1m[37m[40mAlias(s):[0m[37m[40m PciRoot(0x0)/Pci(0x4,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)/HD(127,GPT,AF191D5A-F9A1-40A8-9164-B216701312F3,0x5800,0x800) [16;01HPress [1m[37m[40mESC[0m[37m[40m in 5 seconds to skip [1m[33m[40mstartup.nsh[0m[37m[40m or any other key to continue.[16;01HPress [1m[37m[40mESC[0m[37m[40m in 4 seconds to skip [1m[33m[40mstartup.nsh[0m[37m[40m or any other key to continue.[16;01HPress [1m[37m[40mESC[0m[37m[40m in 3 seconds to skip [1m[33m[40mstartup.nsh[0m[37m[40m or any other key to continue.[16;01HPress [1m[37m[40mESC[0m[37m[40m in 2 seconds to skip [1m[33m[40mstartup.nsh[0m[37m[40m or any other key to continue.[16;01HPress [1m[37m[40mESC[0m[37m[40m in 1 seconds to skip [1m[33m[40mstartup.nsh[0m[37m[40m or any other key to continue. [17;01HThe system will reboot in 60 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 59 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 58 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 57 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 56 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 55 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 54 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 53 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 52 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 51 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 50 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 49 seconds. Press any key [2025-12-27T13:17:04.737361]to run interactive shell.[17;01HThe system will reboot in 48 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 47 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 46 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 45 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 44 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 43 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 42 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 41 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 40 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 39 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 38 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 3[2025-12-27T13:17:16.737450]7 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 36 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 35 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 34 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 33 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 32 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 31 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 30 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 29 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 28 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 27 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 26 seconds. Press any key to run interactive shell.[17;01HTh[2025-12-27T13:17:28.737525]e system will reboot in 25 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 24 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 23 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 22 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 21 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 20 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 19 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 18 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 17 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 16 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 15 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 14 seconds. Press any key to run int[2025-12-27T13:17:39.837609]eractive shell.[17;01HThe system will reboot in 13 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 12 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 11 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 10 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 9 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 8 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 7 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 6 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 5 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 4 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 3 seconds. Press any key to run interactive shell.[17;01HThe system will reboot in 2 seconds.[2025-12-27T13:17:51.837681] Press any key to run interactive shell.[17;01HThe system will reboot in 1 seconds. Press any key to run interactive shell. UEFI firmware (version built at 09:00:00 on Nov 1 2018) [2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[0m[35m[40m[0m[37m[40mNo bootable device found. Dropping to the EFI Shell. Exiting the UEFI shell will restart the system.[2J[01;01H[01;01HUEFI Interactive Shell v2.2 EDK II
답변 2
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음 원래대로라면 09:05 처럼 에러가 나야 정상인데 왜 변경이 되었는지 모르겠네요. 서로 호환이 안되는 아키텍처일탠데요. 에러도 그래서 나는 것으로 보입니다.
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안녕하세요, 인프런 AI 인턴입니다. changju lee님.
EC2 인스턴스의 타입을 변경하는 과정에서 연결 문제와 부팅 오류가 발생하여 불편을 겪으신 것 같습니다. UEFI 로그에서 “No bootable device found”라는 메시지는 AMI를 새 인스턴스로 시작할 때 발생할 수 있는 일련의 문제를 나타냅니다. 여러분이 직면한 문제를 해결하기 위해 몇 가지 검토할 점들을 제안드릴게요.
올바른 AMI 생성: AMI를 생성할 때 인스턴스 생성 시 필요한 모든 볼륨이 올바르게 포함되어 있는지 확인해야 합니다. 부팅 가능한 볼륨(예: 루트 볼륨)이 누락되면 부팅이 불가능한 상태가 될 수 있습니다.
인스턴스 호환성 확인: m7g.medium 인스턴스 타입이 ARM 아키텍처 기반의 Graviton2를 사용합니다. 기존 인스턴스가 x86 아키텍처 기반이었다면, AMI가 호환되지 않을 수 있습니다. Graviton2 인스턴스를 사용하려면 사용하려는 OS 및 애플리케이션이 ARM 아키텍처를 지원해야 합니다.
부팅 옵션 확인: AMI 생성 시 루트 디바이스 및 부팅 옵션이 제대로 설정되어 있는지 확인하시기 바랍니다. 이는 인스턴스가 올바르게 부팅될 수 있는지 여부에 직접적인 영향을 줍니다.
관련해서 도움이 될 만한 유사한 질문과 답변 링크를 아래에 제공해 드립니다:
강의의 내용을 다시 한번 확인하시고, 여전히 문제가 해결되지 않는다면 추가적인 정보를 제공해주시거나 AWS 강의실 오픈채팅방에서 다른 수강생들과 정보를 공유하며 도움을 받으실 수 있습니다.
저는 질문자님의 이해를 돕고자 지식공유자님의 기존 답변을 참고하여 유사한 답변 링크를 추천해드리고 있습니다.
현재 베타 기능으로 답변이 만족스럽지 않을 수 있는 점 양해 부탁드립니다. 🙏
추가적으로 궁금한 점이 있으시면, 이어서 질문해 주세요. 곧 지식공유자께서 답변해 주실 것입니다.