Create Virtual Machine#1
2014/04/21 |
Install GuestOS and create Virtual Machine. This example shows to install Ubuntu 14.04.
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[1] | Install on text mode via network, it's OK on Console or remote connection with Putty and so on. |
root@dlp:~# mkdir -p /var/kvm/images # create a storage pool root@dlp:~# virt-install \
Starting install...
--name template \
--ram 2048 \ --disk path=/var/kvm/images/template.img,size=30 \ --vcpus 2 \ --os-type linux \ --os-variant ubuntutrusty \ --network bridge=br0 \ --graphics none \ --console pty,target_type=serial \ --location 'http://jp.archive.ubuntu.com/ubuntu/dists/trusty/main/installer-amd64/' \ --extra-args 'console=ttyS0,115200n8 serial' # installation starts |
For options, make sure 'man virt-install', there are many options
--name
specify the name of Virtual Machine
--ram
specify the amount of memories of Virtual Machine
--disk path=xxx ,size=xxx
'path=' ⇒ specify the location of disks of Virtual Machine
--vcpus'size=' ⇒ specify the amount of disks of Virtual Machine
specify the virtual CPUs
--os-type
specify the type of GuestOS
--os-variant
specify the kind of GuestOS
--network
specify network types of Virtual Machine
--graphics
specify the kind of graphics. if set 'none', it means nographics.
--console
specify the console type
--location
specify the 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. |
Ubuntu 14.04 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)'. |
trusty@www:~$
# push Ctrl + ] root@dlp:~# # Host's console
root@dlp:~#
trusty@www:~$ virsh console www # move to Guest Connected to domain www Escape character is ^] # Enter key # 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.
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root@dlp:~# # Host's console root@dlp:~# virt-clone --original www --name template --file /var/kvm/images/template.img
Cloning www.img
Clone 'template' created successfully.| 20 GB 01:39
root@dlp:~# ll /var/kvm/images/template.img -rwxr-xr-x 1 root root 32212254720 Apr 21 20:58 /var/kvm/images/template.img* root@dlp:~# ll /etc/libvirt/qemu/template.xml -rw------- 1 root root 1787 Apr 21 20:23 /etc/libvirt/qemu/template.xml |
[5] |
[6] | Define a new Storage Pool.
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root@dlp:~# mkdir /etc/libvirt/storage/
root@dlp:~#
vi /etc/libvirt/storage/disk01.xml # create new
<pool type='dir'>
# any name <name>disk01</name> <capacity>0</capacity> <allocation>0</allocation> <available>0</available> <source> </source> <target> # specify pool directory <path>/var/kvm/images</path> <permissions> <mode>0700</mode> <owner>-1</owner> <group>-1</group> </permissions> </target> </pool>
root@dlp:~#
virsh pool-define /etc/libvirt/storage/disk01.xml Pool disk01 defined from /etc/libvirt/storage/disk01.xml
root@dlp:~#
virsh pool-start disk01 Pool disk01 started
root@dlp:~#
root@dlp:~# virsh pool-autostart disk01 Pool disk01 marked as autostarted virsh pool-list Name State Autostart ----------------------------------------- disk01 active yesroot@dlp:~# virsh pool-info disk01 Name: disk01 UUID: b5a4f700-daba-43b9-a873-e365e070ef36 State: running Persistent: yes Autostart: yes Capacity: 180.75 GiB Allocation: 8.56 GiB Available: 172.19 GiB |