Unable to convert a cluster to vLCM Single Image managed when there is a host in the cluster marked as "Not responding."
vSphere vCenter Server 8.0.3
A host in the cluster is showing a not responding status, which is failing the eligibility check for the cluster to become single image managed.
/var/log/vmware/vmware-updatemgr/vum-server/vum-server-####.log
2025-02-25T21:42:11.546Z error vmware-vum-server[151325] [Originator@6876 sub=HostLocator] [hostLocator 133] Failed to acquire lifecycle Vapi ticket for host host-######. Reason: Fault cause: vmodl.fault.HostCommunication
-->
2025-02-25T21:42:11.546Z error vmware-vum-server[151325] [Originator@6876 sub=ImageManager::EnablementManager] [EnablementManager 1552] Failed to retrieve payload for 'host-######' host. VmacoreError: Fault cause: vmodl.fault.HostCommunication
-->
2025-02-25T21:42:11.547Z error vmware-vum-server[151325] [Originator@6876 sub=ImageManager::EnablementManager] [EnablementManager 1894] Failed to retrieve payload information for 'domain-c###' cluster.
2025-02-25T21:42:11.547Z error vmware-vum-server[151325] [Originator@6876 sub=com.vmware.vcIntegrity.lifecycle.CheckFeatureApplicabilityTask] [Task, 524] Task:com.vmware.vcIntegrity.lifecycle.CheckFeatureApplicabilityTask ID:########-####-####-####-############. SOFTWARE check failed for 'domain-c###(<cluster_name>)' cluster.
2025-02-25T21:42:11.547Z info vmware-vum-server[151325] [Originator@6876 sub=com.vmware.vcIntegrity.lifecycle.CheckFeatureApplicabilityTask] [Task, 524] Task:com.vmware.vcIntegrity.lifecycle.CheckFeatureApplicabilityTask ID:########-####-####-####-############. Finalizing Task
2025-02-25T21:42:11.547Z error vmware-vum-server[151325] [Originator@6876 sub=com.vmware.vcIntegrity.lifecycle.CheckFeatureApplicabilityTask] [Task, 524] Task:com.vmware.vcIntegrity.lifecycle.CheckFeatureApplicabilityTask ID:########-####-####-####-############. Task Failed. Error: Error:
--> com.vmware.vapi.std.errors.error
--> Messages:
--> com.vmware.vcIntegrity.lifecycle.enablement.EligibilityCheck.UnsupportedSolution.Failure<Cluster contains payload from unsupported solution(s).>
-->
Utilizing the hostID number from the vum-server.log file, search that hostID in the vpxd logging to find the name of the host.
/var/log/vmware/vpxd/vpxd.log
2025-02-25T21:42:11.540Z warning vpxd[09327] [Originator@6876 sub=InvtHostCnx opID=HostSync-host-######-<opID>] Exception occurred during host sync; Host communication failed; [vim.HostSystem: host-######,<host_name>], e: N5Vmomi5Fault17HostCommunication9ExceptionE(Fault cause: vmodl.fault.HostCommunication
--> )
-->
This is working as expected. The eligibility check will fail if there are issues with the hosts in the cluster communication with vCenter Server. Resolve any host communication issues before attempting to convert a cluster to Single Image Managed. Disconnecting and or removing the host from the cluster or vCenter Server is a temporary workaround.