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Create Virtual Machine #1
2010/07/19 |
| Install GuestOS and create Virtual Machine. This example shows to install Ubuntu 10.04 LTS.
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| [1] | Install on text mode via network, it's OK on Console or remote connection with Putty and so on. |
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root@ubuntu:~# mkdir -p /var/kvm/images # create a directory for virtual machines root@ubuntu:~# virt-install \ -n www \ -r 1024 \ -f /var/kvm/images/www.img \ -s 20 \ --vcpus=2 \ --os-type linux \ --os-variant=virtio26 \ --network bridge=br0 \ --nographics \ --location='http://jp.archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/' \ --extra-args='console=tty0 console=ttyS0,115200n8' Starting install... # installation starts |
| For options, make sure 'man virt-install', there are many options. -n specify the name of Virtual Machine -r specify the amount of memories of Virtual Machine -f specify the location of disks of Virtual Machine -s specify the amount of disks of Virtual Machine --vcpus=
specify the virtual CPUs
--os-type
specify types of GuestOS
--network=
specify network types of Virtual Machine
--nographics
nographics
--location=
specify location of installation where from
--extra-args=
specify parameters that is set in kernel
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| [2] | Install on text mode, it's the same with common procedure of installation. After finishing installation, reboot first and then login prompt is shown like follwos. |
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Ubuntu 10.04 LTS www ttyS0 www login: # login with a user set in installation |
| [3] | Move to GuestOS to HostOS with Ctrl + ] key. Move to HostOS to GuestOS with a command 'virsh console (name of virtual machine)'. |
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lucid@www:~$ # push Ctrl + ] root@ubuntu:~# # Host's console root@ubuntu:~# virsh console www # move to Guest Connected to domain www Escape character is ^] # Enter key lucid@www:~$ # Guest's console |
| [4] | Because after installing GuestOS from network, it is minimum settings, so it's useful to save it as a
template in order to create new virtual machines later. Please refer next procedure to
create a new virtual machine from template below.
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root@ubuntu:~# # Host's console root@ubuntu:~# cp /var/kvm/images/www.img /root/guest.img # disk image root@ubuntu:~# cp /etc/libvirt/qemu/www.xml /root/guest.xml # XML file
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| [5] | Set basic initial config to GuestOS first before using it. |