Instance(s) Fail to Delete When Host is Down/Offline

Problem

• Instances(s) fail to delete.
• The hypervisor associated with the affected instance(s) is offline.
• “Unexpected API Error” message appears when attempting to delete the instance.

Environment

• Platform9 Managed OpenStack - v3.6.0 and Higher

Cause

• Either the hypervisor is down or removed.
• The nova-compute service on the host is stopped.
• Connectivity issues are present between the hypervisor and the Management Plane.

Resolution

1. Identify the UUID of the host on which each instance resides.

# openstack server show -c OS-EXT-SRV-ATTR:host [INSTANCE_UUID]

2. Force the compute service for the host to report as down.

# nova service-force-down [HOST_UUID]

3. Delete the instance.

# openstack server delete [INSTANCE_UUID]