SDDC Manager VxRail cluster expansion validation API is failing

Products

• VMware SDDC Manager / VCF Installer

Issue/Introduction

While trying to use the cluster expansion API (/v1/clusters/{id}/validations) in SDDC, the API fails to execute, returning a response simillar to:

 "errorCode": "ERROR_PARSING_VXRAIL_HOST_DETAILS",

        "arguments": [],

        "message": "Unable to parse host details in VxRail Manager's response message",

        "causes": [

            {

                "type": "com.google.gson.JsonSyntaxException",

                "message": "java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $"

            },

 

When viewing the /var/log/vmware/vcf/domainmanager/domainmanager.log in SDDC, the messages' contents from the API response can be found.

Environment

VCF 5.2.2

Resolution

Contact Broadcom Technical Support to have the logs reviewed. Based on the domainmanager.log's logged API response (for "ERROR_PARSING_VXRAIL_HOST_DETAILS"), appropriate corrective actions must be taken.