🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026
Affected versions: FreeBSD 12

📖 ~1 min read

Table of contents
  1. Symptom & Impact
  2. Environment & Reproduction
  3. Root Cause Analysis
  4. Quick Triage
  5. Step-by-Step Diagnosis
  6. Solution – Primary Fix
  7. Solution – Alternative Approaches
  8. Verification & Acceptance Criteria
  9. Rollback Plan
  10. Prevention & Hardening
  11. Related Errors & Cross-Refs
  12. References & Further Reading

Symptom & Impact

Service appears running but rc scripts cannot manage it because expected PID file does not exist.

Environment & Reproduction

service onestatus reports not running while process is present, often after daemon command-line changes.

Root Cause Analysis

Incorrect pidfile path, daemon wrapper flags mismatch, or permission denial on runtime directory causes mismatch.

Quick Triage

Inspect ps output, rc.d script pidfile variable, and daemon command options used to launch process.

Step-by-Step Diagnosis

Trace startup sequence to find where PID file creation diverges from rc.d expectations. image_ref=0

Illustrative mockup for freebsd-12 — terminal_or_shell
Validating daemon process and PID tracking — Illustrative mockup — Progressive Robot

Solution – Primary Fix

Align pidfile path between daemon and rc.d script, fix runtime directory permissions, then restart service. image_ref=1

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Illustrative mockup for freebsd-12 — log_or_config
Reviewing rc.d script pidfile and command flags — Illustrative mockup — Progressive Robot

Solution – Alternative Approaches

Use supervisor-managed services where native daemon PID behavior is unreliable or inconsistent.

Verification & Acceptance Criteria

service start/stop/status works correctly and PID file lifecycle matches process state transitions.

Rollback Plan

Restore prior rc.d script and daemon flags if updated process management logic remains unstable.

Prevention & Hardening

Standardize daemon startup templates and include PID checks in service health probes.

Often linked to stale PID files, zombie processes, and failed graceful stop operations.

Related tutorial: View the step-by-step tutorial for freebsd-12.

View all freebsd-12 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Consult man rc.subr, man daemon, and FreeBSD service management conventions.

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