During a VCF 9.0 deployment with the installer fails with "Create vSAN Disk Groups"

Products

• VMware SDDC Manager

Issue/Introduction

• In the VCF Installer UI, the "Create vSAN Disk Groups" step shows a failure
• Domainmanager.log: 
  2025-07-25T13:37:43.468+0000 INFO  [vcf_dm,688387f284afd498665fba32c4354466,5c3e] [c.v.e.s.c.c.v.vsan.VsanManagerBase,dm-exec-11]  Waiting for a minute to check value: xxxxxxxxx.local:PARTITIONED. Prev
ious pending resource: xxxxxxxxxx.local:PARTITIONED
2025-07-25T13:37:52.491+0000 WARN  [vcf_dm,688388adb8dca058cad4204d15cf3fbd,f989] [c.v.v.v.c.v1.QuickStartApiConverter,http-nio-127.0.0.1-7200-exec-3]  GET /v1/tasks/831c1713-abf8-4253-8320-acec497e7388 to SDDC Ma
nager xxxxxxxxxxx failed. Could be due to expired token. Trying again by refreshing the token.
2025-07-25T13:37:52.491+0000 DEBUG [vcf_dm,688388adb8dca058cad4204d15cf3fbd,f989] [c.v.e.s.c.s.s.CommonServicesApiFactory,http-nio-127.0.0.1-7200-exec-3]  Creating TasksApi with token based auth for base path: htt
ps://xxxxxxxxx.local
2025-07-25T13:37:55.563+0000 ERROR [vcf_dm,688388adb8dca058cad4204d15cf3fbd,f989] [c.v.v.v.c.v1.QuickStartApiConverter,http-nio-127.0.0.1-7200-exec-3]  Could not get external tasks for execution ID 9790fe8e-8126-4
341-abd6-fc923d930008, mapping to context data TriggerSddcInitializeAction. Exception: {}
com.vmware.cloud.foundation.rest.commonsvcs.runtime.ApiException: java.net.NoRouteToHostException: No route to host
        at com.vmware.cloud.foundation.rest.commonsvcs.runtime.ApiClient.execute(ApiClient.java:711)
        at com.vmware.cloud.foundation.rest.commonsvcs.service.TokensApi.createTokenWithHttpInfo(TokensApi.java:141)
        at com.vmware.cloud.foundation.rest.commonsvcs.service.TokensApi.createToken(TokensApi.java:127)
        at com.vmware.evo.sddc.common.services.sddcmanager.CommonServicesApiFactory.getTokenAuthPublicApiClient(CommonServicesApiFactory.java:220)
        at com.vmware.evo.sddc.common.services.sddcmanager.CommonServicesApiFactory.createTaskAggregatorPublicApi(CommonServicesApiFactory.java:87)
        at jdk.internal.reflect.GeneratedMethodAccessor2248.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:569)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:354)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

 

Environment

VCF 9.0

Cause

This issue occurs if there is a MTU misconfiguration.

Resolution

Engage Networking. In order to function properly, all vSAN hosts should be able to communicate properly with each other via the vSAN Network with large packet sizes.

Additional Information

vSAN Health Service - Network Health - vSAN Cluster Partition