Year: 2025
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Changing DNS Settings on ESXi Hosts
Reading Time: 3 minutesChanging DNS Settings on ESXi Hosts is an article that shows an automated approach to changing the DNS configurations on all connected ESXi hosts under the same vCenter Server, using a Python script. The idea is to use a Linux CentOS 9 as a script server. We’ll execute a Python script from this…
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Changing NTP Settings on ESXi Hosts
Reading Time: 2 minutesChanging NTP Settings on ESXi Hosts is an article that shows an automated approach to changing the NTP client configurations on all connected ESXi hosts under the same vCenter Server, using a Python script. The idea is to use a Linux CentOS 9 as a script server. We’ll execute a Python script…
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Upgrading VMware Tools on ESXi Hosts
Reading Time: 3 minutesUpgrading VMware Tools on ESXi hosts is an article that shows an automated approach to upgrading the VMware Tools version on an ESXi host, using a Python script. The idea is to use a Linux CentOS 9 as a script server. We’ll execute a Python script from this server to connect to…
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vCenter Reduced Downtime Upgrade
Reading Time: 5 minutesvCenter Reduced Downtime Upgrade shows how to perform a vCenter Server upgrade with reduced downtime. First and foremost, what is the Reduced Downtime Upgrade? Reduced downtime upgrade (RDU) is a migration-based approach to upgrade vCenter Server between major and minor versions that reduces downtime to less than 5 minutes under ideal network, CPU,…
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How can I use NAT on NSX-T?
Reading Time: 5 minutesIn this article, we’ll show you an example of how to use NAT on NSX-T. First and foremost, what is NAT? NAT is an acronym for Network Address Translation and acts as a translator of IP addresses – an example of NAT usage in providing Internet access to internal devices. In this…
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Recover ESXi Host Network
Reading Time: 6 minutesRecover ESXi Host Network shows all the necessary steps to recover an ESXi management network when connected to a vSphere Distributed Switch (VDS). First things first: Describing the Scenario So, in this example, we have a four-node vSAN cluster, and the first ESXi host, for some reason (wrong configuration such as VLAN…
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Changing the Hostname on a Production vCenter Server
Reading Time: 6 minutesChanging the Hostname on a Production vCenter Server shows all the steps I have used to change the vCenter Server hostname. Disclaimer: All steps shown here were performed in a lab environment. Before applying them to your environment, make sure to understand everything and, if possible, replicate them in a lab or…
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An Introduction to PowerFlex REST API Operations
Reading Time: 7 minutesAn Introduction to PowerFlex REST API Operations shows how to start using the powerful API of the PowerFlex solution. We have written some PowerFlex articles. Click here to see them all!In this article, I will focus only on PowerFlex API Operations. To learn more about PowerFlex, first, check out our other PowerFlex articles. We…
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How to Switch the MDM Cluster Mode
Reading Time: 3 minutesHow to Switch the MDM Cluster Mode shows how to switch from a 3_node PowerFlex MDM cluster to a 5_node MDM cluster. We are running the PowerFlex 4.5.2! Currently, our MDM cluster has three nodes, as we can see below: Our goal here is to add two more nodes: pfmp-sds-04 and pfmp-sds-05.…
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Using IOmeter on Windows
Reading Time: 5 minutesUsing IOmeter on Windows is an article that shows how to measure disk IOPS with the IOmeter tools under a Windows OS. First and foremost, What is IOmeter? Iometer is a workload generator based on a client/server architecture. A graphical user interface, named Iometer, acts as a server coordinating the workers. The…
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Shutting Down the PowerFlex Manager Cluster
Reading Time: 5 minutesShutting Down the PowerFlex Manager Cluster shows how to properly shut down the PowerFlex Management cluster to avoid database issues. We have written some PowerFlex articles. Some of them are introductions to the PowerFlex solution and how to deploy a PowerFlex Manager cluster on Linux. You can click on each link below…