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Troubleshooting

A sample page showing useful formatting features.

Service won't start

systemctl status nginx

journalctl -u nginx --since "10 min ago"

ausearch -m AVC -ts recent

Tip

Check whether the service is actually listening with ss -tlnp.

Collapsible detail

Use ??? instead of !!! to make a box that starts collapsed.

Disk full

df -h                                   # which filesystem
du -xh / --max-depth=1 | sort -h        # which directory
lsof +L1                                # deleted files still held open

Checklist

  • Confirm the symptom
  • Check recent changes
  • Document the fix here