sysop@hub:~/tools/disk-full-log-cleanup$

disk-full-log-cleanup

No space left on device. Six steps from "which file system" to "why did nobody rotate this log", with the commands that find the space and the ones that give it back safely.

what you found

myapp and the paths are placeholders. Look before you delete: list with -print first, and never remove files inside a database folder. Practise the first three steps on a pretend server in the Linux playground. Related: the server is slow, disks and LVM cheat sheet, systemd and journalctl cheat sheet, Docker troubleshooting, log reader.