I have a 2019 Failover Cluster, failing to do Live Migrations.
Cluster is using Mellanox Adapters to synchronize with RDMA and has a shared storage pool. Cluster Checks all went green and the SPN are set correctly. Both hosts are physically identical and are both fully updated on Windows Server 2019 Datacenter. Virtual Switches are set up correctly and named identical.
Hyper-V Live Migration Settings are set to Use Kerberos and SMB and the Delegation Settings in Active Directory are set to:
SERVERB's cifs, Microsoft Virtual Console Service, Microsoft Virtual System Migration Service
SERVERA's cifs, Microsoft Virtual Console Service, Microsoft Virtual System Migration Service
I can do quick migrations without any problems, but live migrations end up in the following error:
Event ID 21502:
Live migration of 'Virtual Machine VM123' failed.
Virtual machine migration operation for 'VM123' failed at migration source 'SERVERA'. (Virtual machine ID 9B92DFDE-CC03-440A-A7F8-97FD0C85B322)
The Virtual Machine Management Service failed to establish a connection for a Virtual Machine migration with host 'SERVERB': The specified target is unknown or unreachable (0x80090303).
The Virtual Machine Management Service failed to authenticate the connection for a Virtual Machine migration at the source host: The specified target is unknown or unreachable (0x80090303).
If i google for this errors i always get to "setspn"-solutions.
I hope to get some help on troubleshooting this because this is a really urgent thing.
Appreciate your help with kind regards.