# Purpose: Bound journald disk use on field devices while keeping history. # Scope: Persistent storage with caps; install to /etc/systemd/journald.conf.d/. # Safety: Reboot-safe; apply with systemctl restart systemd-journald. # Ref: docs/15-LOGGING.md, K-14. [Journal] Storage=persistent SystemMaxUse=500M RuntimeMaxUse=100M MaxFileSec=14day