🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026

📖 ~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 mydaemon status shows dead while process exists, confusing monitoring and auto-restart logic.

Environment & Reproduction

RHEL 7 host running SysV compatibility script under systemd wrapper reproduces inconsistent PID status.

Root Cause Analysis

Stale pid files and nonstandard exit codes in init script cause service command to misreport daemon state.

Quick Triage

Compare ps output with pid file, run systemctl status mapped unit, and inspect journalctl for script errors.

Step-by-Step Diagnosis

Trace /etc/init.d script paths, validate lock file handling, and review SELinux AVC logs impacting runtime directories.

Illustrative mockup for rhel-7 — service_dead_problem
service command reports dead but subsystem locked — Illustrative mockup — Progressive Robot

Solution – Primary Fix

Fix init script return codes, clean stale pid/lock files, and migrate to native systemctl unit where possible.

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Illustrative mockup for rhel-7 — service_dead_fix
init script cleanup and pid handling fix — Illustrative mockup — Progressive Robot

Solution – Alternative Approaches

Wrap daemon with supervisord, use service command compatibility, or enforce Type=forking with proper PIDFile in systemd.

Verification & Acceptance Criteria

service status and systemctl status must agree, and restart actions should succeed without orphaned processes.

Rollback Plan

Restore previous init script from version control and revert unit mapping symlinks if outage risk appears.

Prevention & Hardening

Adopt standardized daemon templates, audit init scripts quarterly, and alert on pid mismatch from monitoring.

Related patterns include start-stop-daemon mismatch, unit masking, and firewalld port bind race conditions.

Related tutorial: View the step-by-step tutorial for rhel-7.

View all rhel-7 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

See Red Hat migration guides from service scripts to systemctl, plus SELinux and journalctl diagnostics references.

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