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A domain is really the virtual machine. Creating a new domain is just one simple command. `virt-install`. It takes a lot of parameters though, it is adviseable to read the virt-install manpage. | A domain is where the KVM Guest is running. Creating a new domain is just one simple command. `virt-install`. It takes a lot of parameters though, so it is adviseable to read the virt-install manpage. |
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{{{ | {{{#!highlight bash |
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if [ $# -eq 0 ] | if [ $# -gt 0 ] |
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echo "${0}: domain-name" else |
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# create the virtual machine |
# create the domain |
Domain Creation
A domain is where the KVM Guest is running. Creating a new domain is just one simple command. virt-install. It takes a lot of parameters though, so it is adviseable to read the virt-install manpage.
Creating
Use the following script to create your domains.
createdomain.sh
1 #!/bin/sh
2
3 NAME="stretch-template"
4 RAM="1024"
5 LVM_SIZE="4G"
6 LVM_GROUP="vg2"
7 GRAPHICS_PROTOCOL="spice" #spice, vnc
8 OS="debian9"
9 MEDIA="/mnt/media/debian/stretch/debian-9.1.0-amd64-netinst.iso"
10
11 if [ $# -gt 0 ]
12 then
13 NAME=${1}
14 fi
15 LVM_NAME="kvm_${NAME}_vda"
16
17 if [ ! -e /dev/${LVM_GROUP}/${LVM_NAME} ]
18 then
19 # create lvm partition
20 lvcreate --size ${LVM_SIZE} --name ${LVM_NAME} ${LVM_GROUP}
21 # create the domain
22 virt-install --name ${NAME} --memory ${RAM} --disk /dev/${LVM_GROUP}/${LVM_NAME},bus=virtio,format=raw --os-variant ${OS} --network bridge=br0,model=virtio --cdrom ${MEDIA} --graphics ${GRAPHICS_PROTOCOL},listen=192.168.1.33,password=${NAME} --noautoconsole --virt-type kvm
23 else
24 echo "${0}: refusing to overwrite existing domain"
25 fi
Parameters
--name |
Give the domain its name. This name is used byt the virsh software as a reference to the domain. |
--memory |
The amount of memory for the domain. Setting a high value to make the istallation run smoother can be a good idea. It is possible to lower the memory later on. |
--disk |
The place where the domain has its virtual disk. Here it is an lvm volume using the raw format, but other formats can be used. |
--os-variant |
Determines the OS running in the domain. |
--network |
Configure the network interface. |
--cdrom |
Set the installation media. |
--graphics |
Configure the guest console. |
--noautoconsole |
Do not try to connect to the guest console, just start the domain. |
--virt-type |
Set the hypervisor. |