TOPIC / TAG
Notes in troubleshooting
13 articles
CSS Columns Masonry Reads in the Wrong Order
A column-count masonry grid shuffles a newest-first post list down each column; a capped CSS grid keeps it in reading order without JavaScript.
Tailwind Typography Lost Its Paragraph Spacing
An unlayered CSS reset quietly beat Tailwind Typography's prose styles; cascade layers explain why, and one @layer block fixes it.
A Safe 90-Second Linux Disk Space Triage
A read-only sequence for finding what filled a Linux server before deleting logs, images, caches, or data you may still need.
Inspect a TLS Certificate with OpenSSL
Check the certificate a server actually presents, including names, issuer, validity, and chain details.
A Calm SSH Host Key Check
Check what really changed when SSH warns about a new host key, before deleting the old entry from knownhosts.
When Cron Does Not Share Your Shell
Fix a script that works in your terminal but fails under cron by giving the job explicit paths, a small environment, and a log.
Reading a Failed systemd Service Without Scrolling Forever
A compact sequence for checking a failed systemd unit, its recent logs, and the exact configuration systemd loaded.
Troubleshooting Google Public CA and acme.sh
Work through Google Public CA problems with acme.sh, from EAB registration and DNS-01 validation to installation and renewal.
RDB, AOF, Both, or Neither: Redis Persistence on a Small Server
Decide whether a small Redis needs RDB snapshots, an append-only file, both, or no persistence, check that saves are really happening, and prove a restore with a throwaway instance.
A Small HTTP Header Check with curl
Inspect the headers a real GET request receives, follow redirects deliberately, and keep response bodies out of the terminal.