If you clone Linux virtual machines on your hypervisor (whether it be VMware ESXi, Hyper-V, or KVM/Proxmox), they will get the same IP address from the DHCP server after powering on, even if the VMs have different MAC addresses.
Category: Virtualization
In this article, we will show some options for backing up virtual machines on a KVM hypervisor, as well as recovery scenarios. I would like to note that there are no convenient backup tools for KVM, and every administrator uses their own methods and scripts. There are two backup scenarios in KVM: when a VM is stopped (the easiest one, but rarely used) and without stopping the virtual machine.
When trying to connect a copied or moved disk image file (*.VHD/*.VDI) of an Oracle VirtualBox virtual machine, you will receive an error:
VirtualBox - Error
Failed to open the hard disk image file FilePath.vhd.
Cannot register the hard disk FilePath.vhd <GUID> because a hard disk DifferentFilePath.vhd with UUID <GUID> already exists.
Result Code: E_INVALIDARG (0x80070057)
Component: VirtualBoxWrap
Interface:IVirtualBox {GUID}
Callee RC: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)
Continue reading “VirtualBox: Cannot Register the Hard Disk Already Exists”
Nested virtualization allows you to run other hypervisors in a virtual machine. In this article, we will look at how to enable nested virtualization in Proxmox VE for Intel and AMD processors.
Continue reading “Enable Nested Virtualization in Proxmox Virtual Machine”
In this article, we will show you how to create a virtual machine on the Proxmox Virtual Environment hypervisor and install the Windows 10/11 or Windows Server 2022/2019/2016 guest operating system on it.
Continue reading “How to Create a Windows Virtual Machine in Proxmox VE”
You can create a NAT (Network Address Translation) network for your virtual machines starting with the Hyper-V version on Windows Server 2016/Windows 10. This article will look at how to enable a NAT network for Hyper-V virtual machines using PowerShell.
Sometimes I run into various problems when jpining VMware ESXi hosts to an Active Directory domain. In this article, I have described typical steps to solve this problem.
Continue reading “VMware ESXi: Can’t Join Active Directory Domain”
After installing Windows guest in a virtual machine on a KVM host, you must install the correct device drivers for virtual hardware (KVM VirtIO drivers). Without these drivers, guest Windows won’t be able to recognize virtual network adapters and a number of other virtual hardware.
Continue reading “Installing KVM VirtIO Drivers in a Windows Virtual Machine”
Before changing the HBA queue depth settings on a VMware ESXi host, check which HBA module is loaded. Connect to your ESXi server via SSH and run the command:
Continue reading “How to Change the HBA Queue Depth on VMware ESXi?”
In this article, we’ll show you how to configure monitoring of a standalone VMware ESXi host with Zabbix. On ESXi, you cannot install zabbix-agent to enable classic monitoring. However, Zabbix can use SOAP (Simple Object Access Protocol) to communicate with ESXi using XML-RPC format messages.
Continue reading “Zabbix: Configuring VMware ESXi Host Monitoring”