Memory utilization displays as 0 for VKS namespaces in VCF Automation 9.1

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

• In VCF Automation 9.1, navigating to Manage & Govern > Namespaces in the tenant portal displays a memory utilization of 0/X.XX TB (e.g. 0/1.95TB) for an actively running VKS cluster.
• Backend metrics APIs accurately report non-zero memory utilization values.

Environment

VCF Automation 9.1

Cause

This issue is caused by a display rounding bug in the tenant portal UI. This behavior is cosmetic and does not affect workload performance or cluster stability.

When a namespace is configured with a large memory allowance (in Terabytes), the UI dynamically shifts all memory metric displays to TB units for readability. When it converts the small actual memory utilization amount into TB, the number becomes so small that the screen's rounding rule displays it as "0" instead of a small decimal. 

Resolution

A resolution for this issue will be included in the future release of VCF Automation.

To inspect accurate real-time memory utilization prior to the fix, use kubernetes command such as: 

kubectl top pods -n <namespace>