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The Smart Way Explained Virtual Hard Disk Image Cloning To create a clone of a previously exported VM, simply import the master appliance on the same host: select File/Import Appliance (or press Ctrl-I), choose the master OVF file containing that VM, and, optionally, choose a new name for each VM.
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Replicas of all virtual hard disks attached to the exported VMs will be placed alongside that file, so make sure there is enough free space at the target location.
To create a "master" appliance containing one or more VMs that you want to clone, select File/Export Appliance (or press Ctrl-E), choose the VM(s) you want to export, optionally add/edit their meta-information, and select the desired name and location of the OVF (Open Virtualization Format) file that will contain VM descriptors. VirtualBox supports VM cloning via appliance export/import since version 2.2.
You may now skip to the explanations, or read about The Official Way
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If you need to clone a VM just once, or perhaps create a series of restore points without relying on VirtualBox snapshots, the official way may be the way to go, though you may still wish to clone the virtual hard disk image separately.įile names/locations and commands are valid as of Ubuntu 10.04, but may be different on other guest operating systems. Note that this process is optimized for the creation of multiple, nearly identical VM clones, two or more of which may then run side-by-side on a single host. Contributing to the speed of VM setup is smart cloning, which is the subject of this second post. to compare the performance and memory footprint characteristics of different Web stacks. The first part covered the creation of a VirtualBox VM with a baseline Ubuntu Server installation for the purpose of quickly setting up a series of identical VMs, e.g. Note that /var/lib/dbus/machine-id is linked to /etc/machine-id.This is a second post of a two-part series. # This is the network config written by 'subiquity'Īfter making this edit, you will have to apply it to make it have effect. (see netplan.io - examples) cat /etc/netplan/00-installer-config.yaml Add it under any interface you need to, and be careful of indentation in the yaml file. If using netplan, change the way netplan constructs the client identifer for DHCP to use the MAC address by adding dhcp-identifier: mac to your netplan config file in /etc/netplan. Initializing machine ID from random cat /etc/machine-id On your two systems, you can compare the contents of /etc/machine-id and they're probably the same.Ĭhange the machine-id on at least one of the servers (huangjunpo's answer) cat sudo rm sudo systemd-machine-id-setup When a Ubuntu system is cloned, the cloning process may change the MAC address of the NIC but it typically doesn't automatically change /etc/machine-id.
The file /etc/machine-id is used to create the DHCP identifier by default, rather than using the MAC address of the NIC. In newer Ubuntu versions, netplan is used for configuring the network.