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-tls-certificates.en https://www.youngju.dev/blog/linux/2026-08-15-guide-tls-certificates.en A purpose-by-purpose reference of the openssl commands for reading certificates, creating CSRs, verifying chains, converting formats, and diagnosing server connections. Also covers how to identify expiry, a missing chain, and a key mismatch in the field. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스tls인증서openssl보안운영 https://www.youngju.dev/blog/linux/2026-08-15-guide-tls-certificates.ja https://www.youngju.dev/blog/linux/2026-08-15-guide-tls-certificates.ja 証明書を読み、CSRを作り、チェーンを検証し、形式を変換し、サーバー接続を診断するopensslコマンドを目的別に整理します。有効期限切れとチェーン欠落、鍵の不一致を現場で判別する方法まで扱います。 Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스tls인증서openssl보안운영 https://www.youngju.dev/blog/linux/2026-08-15-guide-tls-certificates https://www.youngju.dev/blog/linux/2026-08-15-guide-tls-certificates 인증서를 읽고, CSR을 만들고, 체인을 검증하고, 형식을 변환하고, 서버 연결을 진단하는 openssl 명령을 목적별로 정리합니다. 만료와 체인 누락, 키 불일치를 현장에서 판별하는 방법까지 다룹니다. Sat, 15 Aug 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) 리눅스tls인증서openssl보안운영