Can a Node be Reauthorize with Hypervisor Role in Platform9 Management Plane?

Problem

Can we reauthorize a node with Hypervisor role in Platform9 Managed OpenStack deployment if the node was deauthorized?

Environment

• Platform9 Managed OpenStack - All Versions
• Nova

Answer

• It is not supported to reauthorize a node removed from Platform9 environment unless all the instances running on the node are migrated from the deauthorized hosts.

• Role deauth for Hypervisor role forces the compute service on the host down, marks its instances’ metadata as deleted but instances are not really deleted from hypervisor (but may lose network connectivity as plumbing was done via Neutron). It merely unmanages these instances at this point and there is no way to bring the compute role back after this is done

• When the role will be reauthorized with Hypervisor Role periodic tasks in nova-compute checks and deletes any instances that were marked as deleted on the control plane but not removed from the hypervisor.

• Contact the Platform9 Support if you have deauthorized the node without migrating the instances running on the node.