Virtualization Archives - Igor Oseledko

AWS CLI Cheat Sheet

Igor — Mon, 20 May 2024 22:19:49 +0000

Originally published May 21, 2018 @ 10:18 pmThe installation and configuration process for AWS CLI is fairly simple. The package itself is installed with pip (yum -y install python-pip): pip install awscli --upgrade --user Selecting what you need from the output can be accomplished via awscli filters and queries; using the excellent jq JSON processor; […]

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The Mystery of a Hemisphere

Igor — Fri, 09 Feb 2024 14:57:44 +0000

Originally published February 9, 2018 @ 10:32 pmTo make this long (and embarrassing) story short: a friend’s kid had a homework assignment in geometry to calculate the surface area of a conjoined cone, a cylinder, and a hemisphere. Geometry being the only subject in which I never had anything less than perfect marks, I decided […]

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Use PowerCLI to Change NIC Type

Igor — Tue, 31 Oct 2023 03:07:59 +0000

Originally published April 17, 2017 @ 11:16 amThis is a quick PowerCLI script that reads from a list of VM names and for each VM with network adapter type “E1000” changes it to “Vmxnet3”. Nothing fancy, no reboot is needed. MAC should stay the same, but this depends on your cluster network configuration. Set-PowerCLIConfiguration -Scope […]

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Get a List of all ESX Hosts in a Datacenter

Igor — Sun, 29 Oct 2023 00:32:55 +0000

Originally published April 17, 2017 @ 11:14 amAnother simple one-liner to get a list of hostnames of all ESX servers in the vCenter. This can be useful for a number of things, specifically as input for other PowerCLI scripts. Set-PowerCLIConfiguration -Scope Session -WebOperationTimeoutSeconds -1 -Confirm:$false; Import-Module VMware.VimAutomation.Vds; $VMHost="vcenter01.domain.com"; Connect-VIServer -Server $VMHost -User 'DOMAIN\User' -Password 'Password1'; […]

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Configure and Run esxcli on Red Hat

Igor — Fri, 27 Oct 2023 04:03:34 +0000

Originally published March 20, 2017 @ 1:00 pmThe esxcli utility is used to interface with the vSphere and ESX hosts. It is a useful tool for getting to some basic VMWare functionality from the Unix shell. It is also a pre-requisite for some of the server deployment and configuration management tools, such as SaltStack. Download […]

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Sample Salt Proxy Configuration for vCenter/ESX

Igor — Thu, 26 Oct 2023 14:07:29 +0000

Originally published March 20, 2017 @ 11:20 amThe Salt proxy agent is a relatively new feature of Salt allowing to control networked devices where salt-minion cannot be installed directly. The official Salt documentation on the subject is outdated and full of syntax errors. It’s actually quite sad that some talented folks at SaltStack spend months developing new functionality […]

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Managing VMs with PowerCLI

Igor — Mon, 23 Oct 2023 15:05:59 +0000

Originally published February 20, 2017 @ 1:21 amBelow is a collection of useful Power-CLI one-liners (or thereabouts) that can speed up your script-writing efforts. As everything Windows, things change often and for no obvious reason, so expect to see type is deprecated and parameter is obsolete warnings now and then.More often than not, they’re harmless: they like […]

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Copying a VM between VCenters

Igor — Sun, 15 Oct 2023 20:12:56 +0000

Originally published November 12, 2016 @ 11:14 pmI had a little task: clone an operational VM from one VCenter to another. Normally, for such a task I would use the Standalone Converter. Unfortunately, this time I ran into an annoying SSH key issue: the source VM was an old 32-bit RHEL using DSA and my […]

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Fixing NIC Name in Cloned VMWare Linux Machines

Igor — Thu, 28 Sep 2023 01:17:14 +0000

Originally published June 28, 2016 @ 11:28 amA suspected bug with certain versions of VMware ESX causes cloned Linux VMs to obtain a sequentially-number NIC. For example, if the parent VM had eth0, the clone will have eth1, and the clone of that clone will have eth2, etc. This can cause issues with centralized configuration […]

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VMWare VMDK Locked Error

Igor — Thu, 28 Sep 2023 00:39:28 +0000

Originally published May 21, 2016 @ 11:13 pmSo, being a Unix admin on-call for the week, I just spent half of my Saturday fixing a dead Windows VM. Very annoying. The best I can tell, the issue occurred during the snapshot operation. Either the VM was powered down or powered back up by some genius […]

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