📖 ~1 min read
Table of contents
Symptom & Impact
Past boot/service events disappear after restart, reducing forensic and troubleshooting capability.
Environment & Reproduction
RHEL 8 default systemd-journald setup without persistent journal directory configured.
Root Cause Analysis
Journald operating in volatile mode because /var/log/journal is missing or Storage setting enforces volatile behavior.
Quick Triage
Check journald.conf Storage setting, verify /var/log/journal existence, and run journalctl –list-boots.
Step-by-Step Diagnosis
Collect current boot journal and configuration evidence from /etc/systemd/journald.conf.
Solution – Primary Fix
Create /var/log/journal, set proper permissions, set Storage=persistent if needed, then systemctl restart systemd-journald.
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Solution – Alternative Approaches
Reboot and confirm journalctl –list-boots includes previous boot entries.
Verification & Acceptance Criteria
If disk pressure is critical, cap journal size with SystemMaxUse and archive logs centrally.
Rollback Plan
Define logging retention policy and bake persistent journald config into baseline images.
Prevention & Hardening
Persistent logs support audit and incident response obligations; protect log integrity and access controls.
Related Errors & Cross-Refs
Use a compliance script to validate Storage mode and alert when journal persistence is disabled.
Related tutorial: View the step-by-step tutorial for rhel-8.
View all rhel-8 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
journald.conf(5), journalctl(1), and RHEL 8 logging administration documentation.
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