External Monitoring tools are unable to monitor ESXi as the Serial Number in MOB shows as Unset
Article ID: 384236
Updated On:
Products
Issue/Introduction
Below is the path for getting serial Number in MOB:
content -> rootFolder -> childEntity -> hostFolder -> childEntity [select appropriate host] -> host -> hardware -> systemInfo -> serialNumber
This value of SerialNumber shows as Unset in MOB
Environment
ESXi 7.x, 8.x
Cause
The serial number is not being fetched correctly by vCenter for display in its MOB page.
The issue seems to occur due to a discrepancy in how vCenter updates and displays host serial number information.
Resolution
Disconnect and Reconnect the ESXi host.
Once, this is done, you should be able to see the Serial Number in the following location:
content -> rootFolder -> childEntity -> hostFolder -> childEntity [select appropriate host] -> host -> hardware -> systemInfo -> serialNumber
Disconnecting and reconnecting the ESXi host forces vCenter to refresh the hardware information, including the serial number.
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