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Showing posts with label vSphere. Show all posts
Showing posts with label vSphere. Show all posts
Saturday, August 16, 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...
Saturday, July 12, 2025

Troubleshooting ESXi PSOD: A Quick Guide for SREs

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When an ESXi host hits a Purple Screen of Death (PSOD), it’s more than just a crash - it’s a signal that something critical needs attention....
Saturday, January 18, 2025

VMware PowerCLI 101 - part12 - Get uptime and boot time of ESXi nodes and VMs

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You can use the following PowerCLI commandlets to get the uptime and boot time of ESXi hosts and VMs. Get ESXi boot time. > Get-Cluster |...
Saturday, October 19, 2024

VMware PowerCLI 101 - part11 - Get vCLS cluster state

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vSphere Cluster Services (vCLS) is a feature introduced in vSphere 7.0 Update 1 to ensure the availability of cluster services like DRS and ...
Saturday, September 21, 2024

VMware PowerCLI 101 - part10 - Verify vSphere cluster state

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To verify the most common selected status attributes of the cluster: Get-Cluster | Get-VMHost | Select Name,@{N='HAState';E={$_.Exte...
Friday, September 6, 2024

Revisiting Storage Performance Benchmarking

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Few years ago, I had the opportunity to explore the intricacies of storage performance benchmarking using tools like FIO , DISKSPD , and Iom...
Thursday, July 4, 2024

vSphere with Tanzu using NSX-T - Part35 - Monitoring supervisor cluster health with Python and vCenter APIs

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vSphere with Tanzu Supervisor cluster is a Kubernetes platform that simplifies the deployment, management, and scaling of Kubernetes cluster...
Thursday, June 27, 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...
Wednesday, June 26, 2024

vSphere with Tanzu using NSX-T - Part32 - Troubleshooting BGP related issues

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This article provides basic guidance on troubleshooting BGP related issues. Sample diagram showing connectivity between Edge Nodes and TOR s...
Saturday, November 18, 2023

vSphere with Tanzu using NSX-T - Part29 - Logging using Loki stack

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Grafana Loki is a log aggregation system that we can use for Kubernetes. In this post we will deploy Loki stack on a Tanzu Kubernetes clus...