📖 ~1 min read
Table of contents
Symptom & Impact
Root filesystem fills due to persistent journal growth, risking service outages.
Environment & Reproduction
Typically seen on verbose hosts without journald retention limits.
Root Cause Analysis
No configured size cap allows logs to grow beyond storage budget.
Quick Triage
Check journal retention settings and current filesystem usage.
Step-by-Step Diagnosis
Identify services producing high log volume.
Solution – Primary Fix
Vacuum old logs and enforce journald size limits.
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Solution – Alternative Approaches
Forward logs to centralized storage and reduce local retention.
Verification & Acceptance Criteria
Journal usage stays within configured limit under normal workload.
Rollback Plan
Restore previous journald settings if reduced retention violates policy.
Prevention & Hardening
Set retention policy baseline in host provisioning templates.
Related Errors & Cross-Refs
Related to logrotate misconfiguration and runaway debug logging.
Related tutorial: View the step-by-step tutorial for Debian 13.
View all Debian 13 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
systemd-journald retention and vacuum documentation.
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