An error occurs in SDDC Manager during workload domain deployment: “Failed to validate NFS datastore at [NFS IP address] with path [path] on host [ESXi].”

Products

• VMware SDDC Manager

Issue/Introduction

The domainmanager.log shows the error VSPHERE_NFS_VALIDATION_FAILED.

domainmanager.log
YYYY-MM-DDTHH:MM:SS.ZZZ+XXXX ERROR [vcf_dm,[id],5551] [c.v.e.s.o.model.error.ErrorFactory,dm-exec-5]  [[token id]] VSPHERE_NFS_VALIDATION_FAILED Could not create datastore [NFS datastore name] with server name [IP address] and path [path] on host [ESXi]
com.vmware.evo.sddc.orchestrator.exceptions.OrchTaskException: Could not create datastore [NFS datastore name] with server name [IP address] and path [path] on host [ESXi]
        at com.vmware.vcf.common.fsm.plugins.action.impl.ValidateHostNfsDatastoreAction.configureDatastoreOnHosts(ValidateHostNfsDatastoreAction.java:279)
        at com.vmware.vcf.common.fsm.plugins.action.impl.ValidateHostNfsDatastoreAction.execute(ValidateHostNfsDatastoreAction.java:133)
        at com.vmware.vcf.common.fsm.plugins.action.impl.ValidateHostNfsDatastoreAction.execute(ValidateHostNfsDatastoreAction.java:51)
        at com.vmware.evo.sddc.orchestrator.platform.action.FsmActionState.invoke(FsmActionState.java:62)
        ・・・

In the vmkernel.log of the target ESXi, it is confirmed that the NFS mount operation failed.

vmkernel.log
YYYY-MM-DDTHH:MM:SS.ZZZ In(182) vmkernel: cpu38:2099513 opID=[opid])NFS: 3500: NFS mount failed for [IP address]:[path] volume [NFS datastore name]. Status: Unable to connect to NFS server.

Environment

SDDC Manager 5.2.x
vCenter Server 8.x
ESXi 8.x

Cause

The mount operation fails because, with the network configuration specified in SDDC Manager, the ESXi host cannot reach the NFS server.

Resolution

Investigate and resolve the cause preventing connectivity to the NFS server under the specified network configuration.

(Reference)
NFS Mount fails Error : Unable to connect to NFS server