Workflow fails when attempting to expand an existing cluster - Configure HA Isolation Address Option

Products

• VMware SDDC Manager

Issue/Introduction

Attempting to expand workload domain cluster fails: Configure HA Isolation Address Option

Environment

SDDC 4.5.x

 

Cause

Cluster Isolation Address is not pingable.   

2025-07-08T16:26:25.024+0000 ERROR [vcf_dm,eb612871ff3d662b,f2b3] [c.v.e.s.o.model.error.ErrorFactory,dm-exec-19]  [11D8QA] VALIDATE_VSPHERE_HA_ISOLATION_ADDRESS_OPTIONS_CONFIGURATION_FAILED Validate Configure High Availability Isolation Address(es) failed for Cluster domain-c7
com.vmware.evo.sddc.orchestrator.exceptions.OrchTaskException: Validate Configure High Availability Isolation Address(es) failed for Cluster domain-c7
        at com.vmware.vcf.common.contract.fsm.actions.impl.BaseHaIsolationAddressOptionsAction.postValidate(BaseHaIsolationAddressOptionsAction.java:172)

Resolution

Follow the workaround in KB   Drift upgrade to VCF 4.4.x fails on configure high availability isolation addresses to remove all high availability isolation addresses from the cluster, and retry the workflow.