What does metric mean in AKS "Disk Used Bytes (Avg)"

Stavros 40 Reputation points
2023-03-16T14:09:15.4633333+00:00

Hi! AKS has a metric called "Disk Used Bytes (Avg)", description: "Disk space used in bytes by device". I have it equal to 13Gb. I don't understand how it counts. I calculated the size of all the pods, but no. I looked at the size of the cluster nodes and it doesn't look like it either. Does anyone know how this metric is calculated?

Azure Kubernetes Service (AKS)
Azure Kubernetes Service (AKS)
An Azure service that provides serverless Kubernetes, an integrated continuous integration and continuous delivery experience, and enterprise-grade security and governance.
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  1. Tech-Hyd-1989 5,741 Reputation points
    2023-03-16T18:34:43.2633333+00:00

    Hello Stavros
    Good day!

    The "Disk Used Bytes (Avg)" metric in AKS is calculated by aggregating the disk space used in bytes by the device across all nodes in the AKS cluster. The metric is calculated by using the Azure Monitor Logs tables.

    It is possible that the size of the pods and the cluster nodes do not match the value of the "Disk Used Bytes (Avg)" metric because the metric is an average of the disk space used by the device across all nodes in the AKS cluster.

    For more details on the "Disk Used Bytes (Avg)" metric and other metrics in AKS, you can refer to the following documentation:

    https://learn.microsoft.com/en-us/azure/aks/monitor-aks-reference

    Please accept as answer and upvote if the above information is helpful for the benefit of the community.

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