Monitoring

Set up smartd on Debian 13 to catch failing SATA and NVMe drives: read smartctl output, schedule self-tests, and prove that alert mail actually arrives.

auditd on Debian 13 (audit 4.0.2): a small rule set for identity, sudo, SSH, cron and module events, ausearch triage and disk-safe log tuning.

Set up AIDE file integrity monitoring on Debian 13: baseline, dailyaidecheck timer, noise tuning, off-host database protection and alert triage.