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PASSEDqueue / slow_start
ActiveMQ 6.1 Startup Timeout — Taking Too Long to Initialize on Ubuntu 22.04 LTS
ActiveMQ 6.1 is taking over 5 minutes to start, exceeding the systemd/Docker timeout. Service killed before becoming ready.
Pattern
PROCESS_CRASH_LOOP
Severity
HIGH
Confidence
72%
Remediation
Auto-Heal
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | PROCESS_CRASH_LOOP | PROCESS_CRASH_LOOP | |
| Severity Assessment | HIGH | HIGH | |
| Incident Correlation | N/A | None | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Auto-Heal — Corax resolves autonomously |
Scenario Conditions
Ubuntu 22.04 LTS. ActiveMQ 6.1 startup sequence taking 375 seconds. systemd TimeoutStartSec=90s. Service killed before completing initialization.
Injected Error Messages (1)
ActiveMQ 6.1 restart loop on Ubuntu 22.04 LTS — initialization taking 375s, systemd timeout exceeded, service killed by watchdog, crash loop back-off, port 61616 connection refused
Neural Engine Root Cause Analysis
Process crash loop detected — a service is repeatedly crashing and restarting, failing to reach a stable running state. This indicates a persistent issue such as a missing dependency, corrupted configuration, incompatible library version, memory corruption, or an unhandled exception that occurs during startup. In Kubernetes environments, this manifests as CrashLoopBackOff with exponentially increasing restart delays.
Remediation Plan
1. Check service logs immediately before each crash for the error message or stack trace.
2. Look for core dumps in /var/crash/ or the configured core dump location.
3. Verify all dependencies (config files, environment variables, database connectivity) are available.
4. Roll back to the last known working version if the crash started after a deployment.
5. For segfaults, check for library version mismatches or corrupted binaries — reinstall the package.
Tested: 2026-04-02Monitors: 1 | Incidents: 1Test ID: cmnhnqh1106m2lig7lkhycqof