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Bert de Bruijn
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123 followers
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Updating VCSA on a private network
Updating the VCSA is easy when it has internet access or if you can mount the update iso. On a private network, VMware assumes you have a webserver that can serve up the updaterepo files. In this article, we'll look at how to proceed when VCSA is on a priva...
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which vSphere version is my VM running on?
(an update of an older post, now complete up to vSphere 6.5)

Your Linux runs on a VMware VM, but which on which ESXi version? You can see for yourself: run "dmidecode" and look at lines 10, 11 and 12. ESX 2.5 - BIOS Release Date: 04/21/2004 - Address 0xE84...
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How VMware appliances update themselves
Most VMware appliances (vCenter Appliance, VMware Support Appliance, vRealize Orchestrator) have the so called VAMI: the VMware Appliance Management Interface, generally served via https on port 5480. VAMI offers a variety of functions, including "check upd...
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VPN gateway setup for Android 5, iOS 9, and Mac OS X 10.10
I recently configured an IKEv1 L2TP/IPSec VPN for a customer. They needed support for a mix of Android 5, iOS 9, and Mac OS X 10.10 clients. During testing and going through debug logs on the VPN gateway, I found that these devices announce support for seve...
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A use case for exporting and importing distributed vswitches
In a recent VMware project, an existing environment of vSphere ESXi hosts had to be split off to a new instance of vCenter. These hosts were member of a distributed virtual switch, an object that saves its configuration in the vCenter database. This informa...
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How to solve "user locked out due to failed logins" in vSphere vMA
In vSphere 6, if the vi-admin account get locked because of too many failed logins, and you don't have the root password of the appliance, you can reset the account(s) using these steps: reboot the vMA from GRUB, "e"dit the entry "a"ppend init=/bin/bash "b"...
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VCSA detailed sizing options
The vCenter Server Appliance in vSphere6 can be deployed as "tiny", "small", "medium", and "large". The deployment wizard gives info about the vCPU and vRAM consequences of this choice, and about the total disk size of the appliance. But as there's 11 (elev...
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which vSphere version is my VM running on?
(an update of an older post, now complete up to vSphere 6) Your Linux runs on a VMware VM, but which on which ESXi version? You can see for yourself: run "dmidecode" and look at lines 10, 11 and 12. ESX 2.5 - BIOS Release Date: 04/21/2004 - Address 0xE8480 ...
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GEM WS2 MIDI System Exclusive structure and checksums
MIDI is the standard for communication between electronic music instruments like keyboards and synthesizers. And computers! While tinkering with an old floppy-less GEM WS2 keyboard, I wanted to figure out the structure of their System Exclusive memory dumps...
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Identifying virtual disks in Linux on vSphere
A default virtual machine has straightforward hardware. A single SCSI disk on a single SCSI card, for example. Having multiple SCSI disks or cards in a VM creates the need for in-guest identification. Linux complicates matters slightly by using alphabetical...
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