VMware vSphere – Automating VM Deployment with Ansible and GitLab CI/CD – Part 1

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A few months ago, when I first came across a project where Ansible and GitLab CI/CD were used to automate VM deployments in VMware vCenter, I wasn’t directly responsible for writing the playbooks. My role was more on the VMware side — managing vCenter, handling ESXi administration, and preparing the YAML host files that Ansible […]

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How to Increase Disk Size of an Ubuntu Linux VM in vSphere

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When managing virtual machines in VMware vSphere, it’s common to run out of disk space over time. Fortunately, expanding a virtual disk is straightforward, but it involves both changes in vSphere and inside the guest operating system. In this guide, I’ll walk you through the steps to increase the disk size of an Ubuntu Linux

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ESXi Packet Loss Troubleshooting with iPerf3 & pktcap-uw – Part 5

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This article is part of the 5-part series: “ESXi Packet Loss Troubleshooting with iPerf3 and pktcap-uw” Part 1: Baseline Testing and Setup Part 2: Capturing UDP Traffic Under Different CPU Loads Part 3: Analyzing Packet Loss with Wireshark Part 4: UDP Loss from Link Flapping and Network Instability Part 5: Inter-VLAN UDP Loss Caused by

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ESXi Packet Loss Troubleshooting with iPerf3 & pktcap-uw – Part 4

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This article is part of the 5-part series: “ESXi Packet Loss Troubleshooting with iPerf3 and pktcap-uw” Part 1: Baseline Testing and Setup Part 2: Capturing UDP Traffic Under Different CPU Loads Part 3: Analyzing Packet Loss with Wireshark Part 4: UDP Loss from Link Flapping and Network Instability ← You are here Part 5: Inter-VLAN

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ESXi Packet Loss Troubleshooting with iPerf3 & pktcap-uw – Part 3

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This article is part of the 5-part series: “ESXi Packet Loss Troubleshooting with iPerf3 and pktcap-uw” Part 1: Baseline Testing and Setup Part 2: Capturing UDP Traffic Under Different CPU Loads Part 3: Analyzing Packet Loss with Wireshark ← You are here Part 4: UDP Loss from Link Flapping and Network Instability Part 5: Inter-VLAN

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ESXi Packet Loss Troubleshooting with iPerf3 & pktcap-uw – Part 2

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This article is part of the 5-part series: “ESXi Packet Loss Troubleshooting with iPerf3 and pktcap-uw” Part 1: Baseline Testing and Setup Part 2: Capturing UDP Traffic Under Different CPU Loads ← You are here Part 3: Analyzing Packet Loss with Wireshark Part 4: UDP Loss from Link Flapping and Network Instability Part 5: Inter-VLAN

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ESXi Packet Loss Troubleshooting with iPerf3 & pktcap-uw – Part 1

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This article is part of the 5-part series: “ESXi Packet Loss Troubleshooting with iPerf3 and pktcap-uw” Part 1: Baseline Testing and Setup ← You are here Part 2: Capturing UDP Traffic Under Different CPU Loads Part 3: Analyzing Packet Loss with Wireshark Part 4: UDP Loss from Link Flapping and Network Instability Part 5: Inter-VLAN

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Secure and Centralized Ubuntu Patching with Ansible

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Let’s be honest — keeping a fleet of Ubuntu servers updated isn’t the most glamorous job, especially when they’re tucked away behind firewalls with no internet access. But what if we could turn this dusty chore into a clean, elegant, and even satisfying little automation adventure? That’s exactly what we did. This was actually my

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Debugging and Resolving vCenter Access Issues Due to Expired Certificates

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Recently, I encountered an issue where I was unable to access the vCenter web interface in my Test-Lab, after restoring to a pretty old Snapshot. Upon attempting to log in, I was met with the errors “No healthy upstream” and “503 – Service Not Available” on the management interface. This blog post outlines how I

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