systemd service failed
One or more systemd units are in the failed state. The service is not running; dependent functionality is offline. Crucible 0.9.2+ also ships the last 5 journal lines per failed unit in evidence so root cause is one click away.
Remediation
When this rule fires on one of your servers, the dashboard alert detail page renders the full remediation guidance: the command to run, what to verify after, and Furnace's annotation for your specific distro + hardware. Sign in at app.glassmkr.com to see the live alert.