The following must be true before following steps in resolution. In particular log entries in 3 and 4 below:
YYYY-MM-DDTHH:MM:SS,MS+0000 ERROR [pool-151-thread-3] (52) com.vmware.adapter3.vmwareinfrahealth.helpers.vsan.collector.VSANHealthServiceCollector.collect - [vSAN - <vCenter FQDN>] Failed to get response for vSAN Health service.
YYYY-MM-DDTHH:MM:SS,MS+0000 WARN [pool-151-thread-1] (52) com.vmware.adapter3.vmwareinfrahealth.helpers.vcenter.collector.VCenterHealthServicesCollector.collect - [<vCenter FQDN>] Unable to get response from the vMON services. Please check if the vCenter MP is configured with admin level credentials.
YYYY-MM-DDTHH:MM:SS.MSZ | vAPI-I/O dispatcher-1 | XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX | <OPS_Node_or_CP_IP> - - [12/Aug/2025:12:32:25 +0000] "GET /rest/appliance/vmon/service/vsan-health HTTP/1.1" 503 223 "-" "Java/11.0.27" 112
YYYY-MM-DDTHH:MM:SS.MSZ | vAPI-I/O dispatcher-1 | XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX | <OPS_Node_or_CP_IP> - - [12/Aug/2025:12:32:26 +0000] "GET /rest/appliance/vmon/service HTTP/1.1" 503 223 "-" "Java/11.0.27" 96
Aria Operations 8.x
Verify that permissions on vCenter Adapter is correctly configured with administrator permissions as per Aria Operations vCenter Appliance Availability dashboard is not displaying services for integrated vCenters before continuing. Incorrect permissions are the most common cause.
Restart the services that are reporting 503 (Service Unavailable) in endpoint-access.log on vCenter, as per Stopping, Starting or Restarting VMware vCenter Server Appliance services.
As per endpoint-access.log example in Introduction (4), the services that needs to be restarted are: