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Create Virtual Machine#1
2015/05/07 |
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Install GuestOS and create Virtual Machine. This example shows to install Debian 8.
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| [1] | Create a Virtual Machine on text mode via network, it's OK on Console or remote connection with Putty and so on. |
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# create a storage pool root@dlp:~# mkdir -p /var/kvm/images root@dlp:~# virt-install \
--name template \
--ram 4096 \ --disk path=/var/kvm/images/template.img,size=30 \ --vcpus 2 \ --os-type linux \ --os-variant debianwheezy \ --network bridge=br0 \ --graphics none \ --console pty,target_type=serial \ --location 'http://ftp.jaist.ac.jp/pub/Linux/debian/dists/jessie/main/installer-amd64/' \ --extra-args 'console=ttyS0,115200n8 serial'
Starting install... # installation starts # on initial boot after installing, push "e" key on the screen like follows
+----------------------------------------------------------------------------+
|*Debian GNU/Linux |
| Advanced options for Debian GNU/Linux |
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+----------------------------------------------------------------------------+
Use the ^ and v keys to select which entry is highlighted.
Press enter to boot the selected OS, `e' to edit the commands
before booting or `c' for a command-line.
# add virtual console like followsand push "Ctrl + x" key to proceed +---------------------------------------------------------------------------------------+ | search --no-floppy --fs-uuid --set=root 82c9915f-4b67-46cc-ac63-c6dd4d7662d1| | | | else | | search --no-floppy --fs-uuid --set=root 82c9915f-4b67-46cc-ac63-c6dd4d7662d1 | | | | fi | | echo 'Loading Linux 3.16.0-4-amd64 ...' | | linux /vmlinuz-3.16.0-4-amd64 root=/dev/mapper/debian--vg-root ro quiet\| | console=ttyS0,115200n8 |
| echo 'Loading initial ramdisk ...' |
| initrd /initrd.img-3.16.0-4-amd64 |
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+---------------------------------------------------------------------------------------+
Minimum Emacs-like screen editing is supported. TAB lists
completions. Press Ctrl-x or F10 to boot, Ctrl-c or F2 for
a command-line or ESC to discard edits and return to the GRUB menu.
Booting a command list
# after login with root account, enable the service like follows root@debian:~# systemctl enable getty@ttyS0 Created symlink from /etc/systemd/system/getty.target.wants/getty@ttyS0.service to /lib/systemd/system/getty@.service. # it's OK, finish installation |
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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] | 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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jessie@debian:~$
# push Ctrl + ] root@dlp:~# # Host's console
root@dlp:~#
jessie@debian:~$ virsh console template # move to Guest Connected to domain template Escape character is ^] # Enter key # Guest's console |
| [3] | Because after installing GuestOS,
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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# Host's console root@dlp:~# virt-clone --original template --name debian8 --file /var/kvm/images/debian8.img Allocating 'debian8.img' | 30 GB 01:02Clone 'template' created successfully. root@dlp:~# ll /var/kvm/images/debian8.img -rw------- 1 root root 32212287488 May 7 20:45 /var/kvm/images/debian8.img root@dlp:~# ll /etc/libvirt/qemu/debian8.xml -rw------- 1 root root 2640 May 7 20:44 /etc/libvirt/qemu/debian8.xml |