목록분류 전체보기 (375)

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Cursor SSH 연결 에러 해결: "Failed to install the Cursor Server"

문제 발생 : Cursor에서 AWS EC2로 원격 접속하려고 했더니 이런 에러가 떴다.Connection to Cursor server failed: Failed to install the Cursor Server. Please check the logs for more details.아니, SSH는 되는데 왜 Cursor만 작동을 하지 않았다. 로그 확인/usr/libexec/grepconf.sh: line 5: grep: command not found/etc/profile.d/which2.sh: line 4: readlink: command not foundbash: bash: command not founddebug1: Exit status 127grep도 없고, bash도 없다는 것을 알게되었..
Useful Lib 2025. 7. 24. 01:32
Docker 특정 포트만 외부 접속이 안 될 때: iptables NAT 무한 루프 해결기

🚨 문제 상황Docker로 서비스를 운영하던 중 기묘한 현상을 발견했다:43001, 43030 포트: 외부 접속 ✅ 정상43000 포트: 외부 접속 ❌ 불가능localhost:43000: 내부 접속 ✅ 정상더 이상한 건, Docker 컨테이너는 정상 실행 중이고, 포트도 제대로 리스닝하고 있었다는 점이다.🔍 진단 과정1. 기본 상태 확인# 포트 리스닝 상태 확인$ netstat -tuln | grep 43000tcp6 0 0 :::43000 :::* LISTEN# Docker 컨테이너 상태 확인 $ docker ps | grep 430008a5bce7ee59f aimfuse-web "docker-entrypoin..
카테고리 없음 2025. 7. 5. 21:19
Understanding the NestJS Request Lifecycle: A Deep Dive

NestJS, a progressive Node.js framework, implements a sophisticated request lifecycle that ensures proper handling of incoming requests through various layers of processing. In this article, we'll break down each step of this lifecycle and understand how it helps in building robust applications.The Request Journey1. Middleware LayerPurpose: Handles common HTTP operationsFunctionality:Pre-process..
Backend/Nest.js 2024. 10. 30. 00:51
Tailwindcss : Carousel Dynamic width control

Problem : I wrote the Carousel code as shown below. I wanted the width of the carousel to be responsive to the screen size, but it wasn't, so I specified a maximum width for each screen size : "max-w-sm xs:max-w-md sm:max-w-xl md:max-w-3xl lg:max-w-5xl xl:max-w-7xl". It adjusted well to the screen size, but the problem was that there were often black spaces.  {items.map((item, i..
Frontend/Tailwindcss 2024. 10. 15. 12:16
postgresql (Supabase) : security definer set search_path = '' (Security Problem)

Securing PostgreSQL Functions in Supabase: Addressing Search Path VulnerabilitiesIn the world of database management and application development, security is paramount. Recently, while working on a Supabase project utilizing PostgreSQL functions, I encountered a security warning that led us down a path of discovery and improvement. This blog post will walk you through our journey from identifyin..
Backend/Supabase 2024. 8. 6. 15:53
React : createPortal

Env : Nextjs 14, shadcn Problem : I want Tooltip to be placed at the top, but the z-index value is not applied due to the rendering order in Dom. Fix :use createPortalWhat is createPortal ? (Cluade Sonnet 3.5 Answer)Certainly. `createPortal` is a powerful feature provided by React that allows you to render a component's children into a different part of the DOM tree, outside of the component's o..
Frontend/React 2024. 7. 13. 22:30
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