Step-by-step playbooks for when things go sideways. Interactive checklists with copy-paste commands.
Diagnose and resolve a full disk on Linux. Covers finding large files, cleaning logs, package caches, and reclaiming space from deleted-but-open files.
Diagnose memory pressure and OOM killer events on Linux. Covers identifying memory-hungry processes, leak detection, cache management, and service recovery.
Reclaim disk space consumed by unused Docker images, volumes, and build cache. Covers safe incremental cleanup and emergency full prune.
Renew an expired or expiring SSL/TLS certificate. Covers Let's Encrypt/certbot renewal, manual certificate replacement, web server reload, and auto-renewal setup.