https://leverage-point.dev/ Recent content on LEVERAGE POINT Hugo ko-kr Wed, 27 May 2026 00:00:00 +0900 https://leverage-point.dev/posts/k8s-job-crd-philosophical-boundary/ Wed, 27 May 2026 00:00:00 +0900 https://leverage-point.dev/posts/k8s-job-crd-philosophical-boundary/ <p>Job 관련 CRD를 계속 개발하다 보면 어느 순간 &ldquo;왜 이게 이렇게 안 맞지?&ldquo;라는 느낌을 받게 된다. 도구가 잘못된 건지, 설계가 잘못된 건지, 아니면 제가 뭔가 놓치고 있는 건지. 이 글은 그 느낌의 근원을 추적하다가 도달한 하나의 결론에 대한 이야기입니다.</p> <p>회사에서 Job 관련 워크로드를 만들면서 부딪힌 마찰들이 모두 같은 뿌리에서 나왔다는 사실을 뒤늦게 깨닫게 되었습니다.</p> <h2 id="kubernetes의-본질">Kubernetes의 본질</h2> <p>Kubernetes를 사용하다 보면 &ldquo;선언적&quot;이라는 단어를 자주 듣는다. 하지만 선언적이라는 말보다 더 정확한 표현은 <strong>level-triggered reconciliation</strong>라고 봅니다.</p> https://leverage-point.dev/posts/elasticsearch-lucene-write-lock-csi-troubleshooting/ Mon, 17 Nov 2025 01:00:00 +0900 https://leverage-point.dev/posts/elasticsearch-lucene-write-lock-csi-troubleshooting/ Kubernetes 환경에서 CSI 이상으로 Elasticsearch 클러스터가 마비될 때 Lucene write.lock 충돌 해결 방법과 StatefulSet 안전 관리, 인프라팀 협업 가이드를 제공합니다. https://leverage-point.dev/posts/k8s-mig-gpu-memory-monitoring-troubleshooting/ Fri, 16 May 2025 00:00:00 +0900 https://leverage-point.dev/posts/k8s-mig-gpu-memory-monitoring-troubleshooting/ MIG 모드가 켜진 NVIDIA GPU를 Kubernetes 컨테이너에서 모니터링할 때 나타나는 Insufficient Permissions 오류의 원인과 해결 방법, 그리고 권한 최소화 사례를 정리합니다. https://leverage-point.dev/posts/how-to-setup-k8s-on-gcp-with-kubeadm/ Tue, 13 May 2025 00:00:00 +0900 https://leverage-point.dev/posts/how-to-setup-k8s-on-gcp-with-kubeadm/ kubeadm을 활용한 프로덕션 수준의 쿠버네티스 클러스터(Kubernetes Cluster) 구축 경험을 정리합니다. https://leverage-point.dev/posts/aws-s3-boto3-bucket-troubleshooting/ Tue, 17 Oct 2023 00:00:00 +0900 https://leverage-point.dev/posts/aws-s3-boto3-bucket-troubleshooting/ Boto3를 활용하여 AWS S3에 데이터를 저장할 때 발생한 문제와 해결 방법 https://leverage-point.dev/posts/monitoring-query-performance-with-pg-stat-statements/ Thu, 13 Jul 2023 00:00:00 +0900 https://leverage-point.dev/posts/monitoring-query-performance-with-pg-stat-statements/ docker-compose에서 PostgreSQL을 실행하고 pg_stat_statements 모듈을 활성화하여 쿼리 성능을 모니터링하는 방법을 알아보자. https://leverage-point.dev/posts/django-db-connections-management/ Sun, 11 Dec 2022 00:00:00 +0900 https://leverage-point.dev/posts/django-db-connections-management/ DB Connection 관리방식(DB Connection Pool, Persistent Connection)과 Django DB Connection 관리방식 https://leverage-point.dev/posts/managing-docker-images-with-aws-ecr/ Fri, 17 Jun 2022 00:00:00 +0900 https://leverage-point.dev/posts/managing-docker-images-with-aws-ecr/ AWS Amazon ECR(Elastic Container Registry)로 도커 이미지를 푸시, 풀, 삭제하기 https://leverage-point.dev/posts/os-memory-management-2/ Fri, 25 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-memory-management-2/ Paging 기법에 대하여 https://leverage-point.dev/posts/os-memory-management-1/ Mon, 14 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-memory-management-1/ Memory management overview https://leverage-point.dev/posts/2022-02-10-os-deadlock/ Thu, 10 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/2022-02-10-os-deadlock/ Deadlock의 개념과 발생조건 및 처리방법에 대하여 https://leverage-point.dev/posts/nosql/ Wed, 09 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/nosql/ NoSQL의 개념과 종류(Key-value, Column, Document, Graph)에 대하여 https://leverage-point.dev/posts/os-process-synchronization-5/ Tue, 08 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-synchronization-5/ Monitor에 대하여 https://leverage-point.dev/posts/os-process-synchronization-4/ Sun, 06 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-synchronization-4/ Classical problem of synchronization. (Dining-Philosophers Problem. e.t.c.) https://leverage-point.dev/posts/big-o-notation/ Sat, 05 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/big-o-notation/ 알고리즘 성능 분석 측면의 접근을 통한 빅오 표기법이 필요한 이유 https://leverage-point.dev/posts/os-process-synchronization-3/ Fri, 04 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-synchronization-3/ About Semaphore. https://leverage-point.dev/posts/os-process-synchronization-2/ Thu, 03 Feb 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-synchronization-2/ About critical section. Algorithm to critical section problem solve. https://leverage-point.dev/posts/os-process-synchronization-1/ Sat, 22 Jan 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-synchronization-1/ Process synchronization overview. https://leverage-point.dev/posts/os-cpu-scheduling-3/ Wed, 12 Jan 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-cpu-scheduling-3/ 다양한 상황에서의 CPU 스케줄링 알고리즘에 대하여 https://leverage-point.dev/posts/os-cpu-scheduling-2/ Sun, 09 Jan 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-cpu-scheduling-2/ 일반적인 CPU 스케줄링 알고리즘에 대하여 https://leverage-point.dev/posts/os-cpu-scheduling-1/ Thu, 06 Jan 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-cpu-scheduling-1/ CPU 스케줄링이란 무엇인가 https://leverage-point.dev/posts/os-process-management-2/ Wed, 05 Jan 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-management-2/ IPC(Inter Process Communication)에 대하여 https://leverage-point.dev/posts/os-process-management-1/ Sat, 01 Jan 2022 00:00:00 +0900 https://leverage-point.dev/posts/os-process-management-1/ 프로세스 생성과 종료에 대하여