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Showing posts with label troubleshooting. Show all posts
Showing posts with label troubleshooting. Show all posts
Saturday, October 18, 2025

Working with GPUs - Part1 - Using nvidia-smi

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GPUs are the backbone of modern AI and HPC clusters, and understanding their basic health and configuration is the first step toward reliabl...
Friday, August 15, 2025

Understanding NUMA: Its Impact on VM Performance in ESXi

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VMware ESXi hosts use Non-Uniform Memory Access (NUMA) architecture to optimize CPU and memory locality. Each NUMA node consists of a subset...
Wednesday, June 26, 2024

vSphere with Tanzu using NSX-T - Part33 - Troubleshooting intermittent connection timeouts to apiserver and workloads

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In the realm of managing Tanzu Kubernetes clusters (TKCs), we have encountered several challenges that hindered the smooth functioning of ou...
Saturday, June 22, 2024

vSphere with Tanzu using NSX-T - Part31 - Troubleshooting inaccessible TKC with expired control plane certs

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In the course of managing multiple Tanzu Kubernetes Clusters (TKC), I encountered an unexpected issue: the control plane certificates had ex...
Saturday, May 25, 2024

vSphere with Tanzu using NSX-T - Part30 - Troubleshooting inaccessible TKC with server pool members missing in the LB VS

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Encountering issues with connectivity to your TKC apiserver/ control plane can be frustrating. One common problem we've seen is the kube...
Sunday, October 29, 2023

Kubernetes 101 - Part12 - Debug pod

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When it comes to troubleshooting application connectivity and name resolution issues in Kubernetes, having the right tools at your disposal ...
Friday, June 9, 2023

vSphere with Tanzu using NSX-T - Part26 - Jumpbox kubectl plugin to SSH to TKC node

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For troubleshooting TKC (Tanzu Kubernetes Cluster) you may need to ssh into the TKC nodes. For doing ssh, you will need to first create a ju...