If errors occur, you can perform troubleshooting actions to restore your OpenStack deployment to operating status. Register the VMware Integrated OpenStack vAppAfter you deploy the VMware Integrated OpenStack OVA as a plug-in, you must register the plug-in before you can access it in vSphere Web Client. Fix Out of Sync Availability ZonesWhen you work with multiple vCenter Server instances, you might see that availability zones are not synced between the OpenStack management server and the VMware Integrated OpenStack Horizon dashboard. Troubleshoot Cinder Volume Backup Failure with Memory ErrorCreating a backup of a Cinder volume on an NFS share fails with a memory error. Troubleshoot Cinder Volume Backup Failure with Permission Denied ErrorThe first attempt to create a test backup of a Cinder volume on an NFS share fails with a permission denied error. Failure RecoveryIn the event of a disk failure or another critical issue, you can recover the individual nodes in your VMware Integrated OpenStack deployment using the CLI. Troubleshoot Unable to Connect to ServerIn the process of importing a vSphere VM into VMware Integrated OpenStack, connecting to the vAPI endpoint fails with an error.