π ~1 min read
Table of contents
Symptom & Impact
Root filesystem reaches capacity, causing write failures and service instability.
Environment & Reproduction
Happens on noisy services with verbose logging and weak rotation retention settings.
Root Cause Analysis
Excessive log output accumulates faster than rotation and cleanup routines can handle.
Quick Triage
Locate top disk consumers and assess whether data can be safely truncated or archived.
Step-by-Step Diagnosis
Use filesystem and log analysis tools to identify runaway paths and process sources.
Solution – Primary Fix
Rotate and compress oversized logs, adjust verbosity, and reclaim emergency disk space.
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Solution – Alternative Approaches
Forward logs centrally, mount dedicated log volume, or enforce quota-based controls.
Verification & Acceptance Criteria
Free space returns to safe threshold and log growth remains within expected daily limits.
Rollback Plan
Restore archived logs if truncation removed required compliance or forensic records.
Prevention & Hardening
Set alerting on disk usage and validate logrotate jobs after service changes.
Related Errors & Cross-Refs
No space left on device, failed writes, and journal append errors.
Related tutorial: View the step-by-step tutorial for Ubuntu 14.04 LTS.
View all Ubuntu 14.04 LTS tutorials on the Tutorials Hub β
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Linux log management, rotation strategy, and storage hygiene references.
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