https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, and data engineering — plus mindset essays on confidence, routines, health, and sport psychology. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 15 Aug 2026 00:00:00 GMT https://www.youngju.dev/blog/linux/2026-08-15-guide-linux-troubleshooting-commands.en https://www.youngju.dev/blog/linux/2026-08-15-guide-linux-troubleshooting-commands.en The diagnostic commands to run, in order, from the moment someone tells you a server is misbehaving. uptime, top, free, df, iostat, ss, journalctl — which number in each output to read, and what that number rules out versus what it leaves standing. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스트러블슈팅운영장애대응명령어성능 https://www.youngju.dev/blog/linux/2026-08-15-guide-linux-troubleshooting-commands.ja https://www.youngju.dev/blog/linux/2026-08-15-guide-linux-troubleshooting-commands.ja サーバーの様子がおかしいと連絡を受けた瞬間から順番に実行する診断コマンドを整理します。uptime、top、free、df、iostat、ss、journalctlまで、各出力のどの数字を見るべきか、その数字が何を除外して何を残すのかを説明します。 Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스트러블슈팅운영장애대응명령어성능 https://www.youngju.dev/blog/linux/2026-08-15-guide-linux-troubleshooting-commands https://www.youngju.dev/blog/linux/2026-08-15-guide-linux-troubleshooting-commands 서버가 이상하다는 연락을 받은 순간부터 순서대로 실행하는 진단 명령어를 정리합니다. uptime, top, free, df, iostat, ss, journalctl까지 각 출력의 어느 숫자를 봐야 하는지, 그 숫자가 무엇을 배제하고 무엇을 남기는지 설명합니다. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스트러블슈팅운영장애대응명령어성능