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VM_UUID Detection Mechanism in Azure

VM_UUID Detection Mechanism in Azure

Differences between the VM_UUID value determined by our cloud detection mechanism, and the UUID value obtained by examining the system /sys/class/dmi/id/product_uuid file.

11.19.1
b0481b90-c0b3-4877-96a4-9301baec7aaa

901B48B0-B3C0-7748-96A4-9301BAEC7AAA

11.18.3
5596ec71-a4fb-4b64-bcd4-27d88df2ac22

71EC9655-FBA4-644B-BCD4-27D88DF2AC22

 



This is due to the difference in byte order for the value determined by cloud platform detection and the value in the file /sys/class/dmi/id/product_uuid



As can be seen, the values are equivalent when comparing the byte order of values from different FNP versions

bytes.PNG

 

The summary is that VMUUID values extracted in FNP versions since version FNP11.18.3 are consistent with values extracted in previous versions that had Azure cloud detection capability.

The latest UUID detection is based cloud provider instance metadata service that hold record of unique UUID value for each instance running.

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Last update:
‎Jan 12, 2023 03:06 AM
Updated by:
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