← 문제 라이브러리
Linux Intermediate LINUX-056 · 17 min

SSH key is valid but included config disables PubkeyAuthentication later in the chain

무료
시나리오

Authorized keys and file permissions look healthy, yet login falls back to password because a later include file overrides the expected sshd setting.

먼저 볼 것
  • Identify the primary failure signal in the SSHD Merge Order scenario.
  • Separate visible symptoms from the underlying technical dependency.
  • Describe the safest recovery path and the follow-up prevention work.
점검 체크리스트
  1. Summarize the current impact and the last known change.
  2. Collect direct evidence from logs, runtime state, and configuration before changing anything.
  3. Separate immediate recovery from permanent prevention work.
복구와 재발 방지

Choose the smallest safe recovery action first, then record the prevention work that reduces repeat incidents.

같이 보면 좋은 질문
Should I translate commands, logs, or product names?

No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.

What should the answer focus on?

State the root cause, the evidence that supports it, and the safest recovery direction.

Why can the scenario remain in the original language?

The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.