CentOS Stream 10 – Common Problem 078 – Diagnosis and Fix

📖 ~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

NetworkManager dispatcher scripts not executing on CentOS Stream 10 disrupts services and slows incident response until the root cause is resolved.

Environment & Reproduction

Custom dispatcher scripts in /etc/NetworkManager/dispatcher.d are silently skipped.

ls -l /etc/NetworkManager/dispatcher.d
systemctl status NetworkManager-dispatcher

Root Cause Analysis

Misalignment between network configuration and CentOS Stream 10 defaults causes the failure path described above.

Quick Triage

Confirm package state, service status, and recent changes before deeper diagnostics.

systemctl status
rpm -qa | grep -i 
journalctl -p err -b --no-pager | tail -100

Step-by-Step Diagnosis

Capture detailed logs, configuration deltas, and runtime state to isolate the failing component.

journalctl -u NetworkManager-dispatcher -n 100
ls -lZ /etc/NetworkManager/dispatcher.d

Solution – Primary Fix

Apply the targeted configuration change and restart the relevant services to restore expected behavior.

sudo chmod 755 /etc/NetworkManager/dispatcher.d/*.sh
sudo chown root:root /etc/NetworkManager/dispatcher.d/*
sudo restorecon -Rv /etc/NetworkManager

Solution – Alternative Approaches

Convert legacy scripts into systemd path units triggered by nm-online.

Verification & Acceptance Criteria

Validate the fix with deterministic checks and ensure no regressions in dependent services.

nmcli con up 
journalctl -u NetworkManager-dispatcher -f

Rollback Plan

Revert configuration and restart services to return to the previous known-good state.

rm /etc/NetworkManager/dispatcher.d/
systemctl restart NetworkManager

Prevention & Hardening

Lint dispatcher scripts in CI and validate SELinux labels.

Related Errors & Cross-Refs

Related: dispatcher scripts, SELinux contexts; see also adjacent topics in the CentOS Stream 10 common problems series.

Related tutorial: View the step-by-step tutorial for centos-stream-10.

View all centos-stream-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

CentOS Stream documentation, Red Hat upstream guides, and CentOS Stream 10 release notes covering this subsystem.