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Self hosted App 101
Problem solving books
Immich
Ubuntu OS Operations
Skills and command 101
Hardware
DJI 동영상을 스트리밍 가능한 형식으로 변환 방법
DJI 동영상을 맥북프로에서 스트리밍용으로 압축하는 가장 좋은 방법은 무료 인코딩 프로그램인 HandBrake를 사용하는 것입니다. H.264 코덱, 1080p 해상도, 30fps 및 웹 최적화 설정을 적용하면 화질 저하를 최소화하면서 용량을 크게 줄일 수 있습니다. [1, 2, 3, 4] HandBrake를 이용한 변환 방법 프로그램 다운로드 및 실행: HandBrake 공식 웹사이트에서 맥용 버전을 내려받아 실행합니다. [1] 파일 불러오기:...
Web Publishing
Web Publishing, HTML, PHP, Frontend design
Check disk I/O speed
우분투에서 디스크의 읽기 및 쓰기 성능을 확인하려면 dd 명령어, hdparm 명령어, 또는 fio 도구를 사용할 수 있습니다. 가장 쉽고 빠른 방법은 기본 도구인 dd와 hdparm을 활용하는 것입니다. [1, 2, 3, 4, 5] 1. dd 명령어로 쓰기 및 읽기 속도 측정하기 dd 명령어는 시스템에 파일을 직접 쓰고 읽어보며 간단하게 성능을 측정합니다. [1, 2] 쓰기 속도 테스트: bash ...
DJI 동영상 최적 변환 조건
For the best streaming performance and browser compatibility on an Immich server, encode your DJI files using H.264 video (8-bit), AAC audio, and an MP4 container with the Web Optimized (FastStart) box checked. [1] Recommended Handbrake Settings Format: MP...
Web Font Style
https://share.google/aimode/iyzirzEHOtRzNCADS https://share.google/aimode/0ZS1r7mVZB0vSyQet https://share.google/aimode/8UWmY2jMsLBORWdns
Clone damaged disk
Reallocated Sectors: 90 suddenly increase and gives errors I/O input error. I wish to backup data to another disk any change to lost data? Yes, there is a strong chance that some data is already lost or at immediate risk. A sudden spike in reallocated sector...
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Security
Mariadb Slow log
/var/log/mysql/mariadb-slow.log is the standard file path used to store the slow query log in MariaDB and MySQL databases on Linux systems. This log records any SQL queries that exceed a defined execution time threshold, helping database administrators diagnos...
Performance
Brute attack and /var/log/btmp
**/var/log/btmp` is a system security log that records all failed login attempts to your Linux server.** Every time someone tries to log in via SSH, the terminal, or local console and enters an incorrect password or username, the system logs it here. Because i...
Journal log size Opimization
/var/log/journal is too high You can quickly clear space by running sudo journalctl --vacuum-size=100M to limit the size of your system logs. [1] Immediate Cleanup Check current size: Run journalctl --disk-usage to see how much space the logs take. Reduce by...
Essential logs to watch
For an Ubuntu server administrator, I recommend monitoring logs in six major areas: kernel/hardware, storage, system services, security, networking, and applications. 1. System and Kernel Logs — highest priority Kernel messages journalctl -k dmesg -T Watch for...
Security against Brute attack
This volume of failed logins is normal background noise for any server with port 22 open to the internet — automated bots scan all IPv4 addresses and start hammering common usernames within minutes of your server going online. Your fail2ban and UFW are doing e...