kvm
====

package
--------
:: 

  $ sudo apt install qemu-kvm libvirt0 libvirt-bin bridge-utils virtinst

start config
--------------
::

  sudo systemctl enable libvirt-bin

make image
----------
::

  $ sudo qemu-img create -f qcow2 /var/lib/libvirt/images/ubuntu1804.qcow2 8G

install 
--------

serial *cannot install*
~~~~~~~~~~~~~~~~~~~~~~~
::

  $ sudo virt-install \
    --name ubuntu1804 \
    --disk path=/var/lib/libvirt/images/ubuntu1804.qcow2,size=8 \
    --vcpus 2 \
    --ram 512 \
    --os-type linux \
    --graphics none \
    --console pty,target_type=serial \
    --network bridge:virbr0 \
    --cdrom /var/lib/libvirt/boot/ubuntu-18.04.2-live-server-amd64.iso \
    --extra-args 'console=ttyS0,115200n8 serial'

vnc
~~~~
::

  $ sudo virt-install \
    --name ubuntu1804 \
    --disk path=/var/lib/libvirt/images/ubuntu1804.qcow2,size=8 \
    --vcpus 2 \
    --ram 512 \
    --os-type linux \
    --graphics vnc,port=5900,listen=0.0.0.0,keymap=us,password=passwd \
    --network bridge:virbr0 \
    --cdrom /var/lib/libvirt/boot/ubuntu-18.04.2-live-server-amd64.iso 

file focation
--------------
::

  vm images         /var/lib/libvirt/images/
  iso images          /var/lib/libvirt/boot/
  xml file                /etc/libvirt/qemu/
  network file       /etc/libvirt/qemu/networks/

macvtap, macvlanを使ったブリッジ接続
-------------------------------------

ゲストのxmlファイルを

::

  <interface type='direct'>
    <mac address='52:54:00:94:9a:a0'/>
    <source dev='eth0' mode='bridge'/>
    <model type='virtio'/>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
  </interface>

とかするとブリッジ接続されるが，ホストの物理インタフェース(ここではeth0はvlanの外と見なされてホストとゲストが通信ができない．
そこでmacvlanを使う．
ホストで

::

  $ sudo ip link add dev macvlan0 link eth0 type macvlan mode bridge
  $ sudo ip addr del <address> dev eth0
  $ sudo ip addr add <address> dev macvlan0
  $ sudo ip link set up dev macvlan0
  $ sudo ip route add default via <default route> (dev ~~)

とするとホストとゲストで接続可能になる．
参考: macvlan_

add intel e1000 nic 
--------------------
::

  <interface type='bridge'>
    <mac address='52:54:00:85:7a:0d'/>
    <source bridge='virbr0'/>
    <model type='e1000'/>
    <address type='pci' domain='0x0000' bus='0x01' slot='0x03' function='0x0'/>
  </interface>

ubuntu image download
---------------------
::

  $ wget http://releases.ubuntu.com/18.04/ubuntu-18.04.2-live-server-amd64.iso


reference
---------

domain_xml_format_  

network_xml_format_  

virsh_



.. _macvlan: https://tenforward.hatenablog.com/entry/20111221/1324466720
.. _domain_xml_format: https://libvirt.org/format.html
.. _network_xml_format: https://libvirt.org/formatnetwork.html#examplesBridge
.. _virsh: http://lipix.ciutadella.es/wp-content/uploads/2016/09/kvm_cheatsheet.pdf