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Modern Kubernetes Visualization using Radar

02.01.2026 by William Lam // Leave a Comment

Over the years, many graphical user interfaces have appeared for Kubernetes, but only a few continue to be actively maintained and developed. While I prefer the standard kubectl CLI for basic interactions with a Kubernetes (k8s) cluster, a visual representation can be extremely helpful for troubleshooting and debugging.

Headlamp was my go to UI tool for k8s, which provides a simliar user experience to many of the previous Kubernetes visualization tools, nothing fancy but it gets the job done.

I recently discovered another OSS Kubernetes visualization tool called Radar, which aims to fill some of the gaps left by existing tools on the market. I was a bit skeptical as this could just be another "modern" tool until the next one is built, but I figured I would give it a try!


At first glance, it has a much cleaner, modern look and feel after I connected it to my vSphere Kubernetes Service (VKS) cluster. The homepage provides a summary of all the expected datapoints including versioning, resource utilization, deployment details, and the health of components and workloads.

[Read more...]

Categories // Kubernetes, VMware Cloud Foundation, vSphere Kubernetes Service Tags // VCF 9.0, VKS

Bypassing the ESX Tunnel Endpoint (TEP) 1600 MTU Check in the VCF Installer

01.29.2026 by William Lam // 1 Comment

Before deploying a new VMware Cloud Foundation (VCF) 9.0 environment, the VCF Installer performs a number of validations including network MTU. The minimum MTU that is required to deploy VCF is 1600, which is used for the Tunnel Endpoint (TEP) for NSX traffic between your ESX hosts.

For most environments, this is not an issue and users will typically deploy VCF with Jumbo Frames enabled and configure the MTU with value of 9000. If your environment does not meet the minimum MTU requirement, the VCF Installer will flag this as an error and prevent you from deploying as shown in the screenshot below.


If you can not meet the MTU requirement, you can bypass the validation check so that you can continue with your deployment of the VCF Management Domain.

[Read more...]

Categories // NSX, VMware Cloud Foundation Tags // VCF 9.0

Quick Tip - NSX Edge fails DNS pre-check as part of VCF 9.0.2 Upgrade

01.23.2026 by William Lam // Leave a Comment

As I continue my VMware Cloud Foundation (VCF) 9.0.2 upgrade journey, I have now reached the core SDDC components, including vCenter, NSX, and ESX.


NSX Manager and NSX Edges was up first and before the upgrade begins, a pre-check is performed. I was not expecting any issues but to my surprise, I ran into the following validation error:

DNS is not configured on edge 83ea6662-41b2-48aa-a8d0-22039d3230c0. Edge will not be able to resolve the fqdn to download the upgrade bundle from NSX manager. Kindly configure a valid DNS on edge.. Other components that failed with the same error: edge01b, edge01a


We all know how important DNS is and ensuring it is configured correctly, both forward and reverse lookups.

However, I like to think that I am pretty good about ensuring everything in my lab is setup with DNS and this honestly was a surprising error, that BOTH NSX Edges do NOT have DNS configured!?! 🤔

[Read more...]

Categories // NSX, VMware Cloud Foundation Tags // VCF 9.0

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William is Distinguished Platform Engineering Architect in the VMware Cloud Foundation (VCF) Division at Broadcom. His primary focus is helping customers and partners build, run and operate a modern Private Cloud using the VMware Cloud Foundation (VCF) platform.

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Recent

  • Automating the Retrieval of VCF Installer Deployment Milestones 02/10/2026
  • Cross vCenter vMotion workloads from vSphere 7.0 to vSphere 9.0 02/09/2026
  • Installing Realtek Network Driver Fling using Free ESXi 8.0 Update 3e ISO 02/05/2026
  • Modern Kubernetes Visualization using Radar 02/01/2026
  • Bypassing the ESX Tunnel Endpoint (TEP) 1600 MTU Check in the VCF Installer 01/29/2026

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