Aria Operations alerts for ESXi hardware sensors show "No further information available"

Products

• VCF Operations

Issue/Introduction

Symptoms

• Hardware sensor degradation alerts in VMware Aria Operations display incomplete sensor information.

• The symptom details in Aria Operations show a generic message, such as: Hardware sensor health state degraded. Sensor information: Type = fan, No further information available.

• When navigating to the vSphere Client, the vCenter > ESXi Host > Monitor > Hardware Health tab displays the full sensor name (e.g., [Device] Fan Device 0 SAS FAN0 spd) and specific Sensor ID (e.g., X.XX.XX.XXX).

Environment

 

• VMware Aria Operations 8.18.x

• VMware vCenter Server 8.0.3

• VMware ESXi 8.0.3

 

Cause

This is an expected architectural behavior based on how data is collected and passed between the products:

• vCenter Server Polling: The vCenter Server directly polls the ESXi host's hardware sensors utilizing CIM/WBEM providers. This direct communication allows vCenter to retrieve and display granular sensor metadata (Sensor ID, Name, Reading).

• Aria Operations Event Collection: Aria Operations does not directly poll the ESXi hardware sensors. Instead, the Aria Operations vCenter adapter monitors and ingests event payloads generated by vCenter. When vCenter triggers a Hardware sensor health state degraded event, the data payload passed via the API to Aria Operations only contains the basic hardware category (e.g., Type = fan) and lacks the extended sensor metadata. Aria Operations parses the provided event string and defaults to No further information available for the missing fields.

Resolution

This is functioning as designed. Aria Operations successfully captures the event to serve as a centralized alerting mechanism that physical hardware requires attention.

To identify the specific failing hardware component for remediation, administrators should pivot to the vSphere Client:

1. Log in to the vSphere Client.

2. Select the affected ESXi host from the inventory.

3. Navigate to Monitor > Hardware Health.

4. Expand the relevant hardware category (e.g., Sensors or Alerts and Warnings) to view the precise sensor ID, name, and status.

Additional Information

For similar behavior regarding missing metadata in storage sensor alerts, see Broadcom KB 396097: Storage sensor health state degraded.