Instance Boot Failure Correlation Chain

critical

reliabilityUpdated Nov 5, 2025

Trace instance spawn failures through the full dependency chain from Nova to Glance, Cinder, and Neutron using centralized logging and distributed tracing.

Sources

Troubleshooting Common OpenStack Nova Log Errors - OpenMetalopenmetal.io

OpenStack Network Monitoring and Troubleshooting - Platform9platform9.com

Logging, Monitoring, and Troubleshooting Guidedocs.redhat.com

Technologies:

OpenStackSymptoms of this issue are visible in OpenStack metrics and logs

How to detect:

Monitor nova-compute logs for 'Instance Failed to Spawn' errors. Use distributed tracing (Jaeger/OpenTelemetry) to follow request paths through Nova→Glance→Cinder→Neutron. Check for image corruption, volume attach failures, or network allocation errors.

Recommended action:

Validate image integrity in Glance, check Cinder storage backend health, verify Neutron DHCP agent status and IP pool availability. Review hypervisor (KVM/QEMU) configuration and resource limits.