Kvm and Openvswitch Ubuntu 14

Update packages

apt-get update && apt-get upgrade

Install Packages

apt-get install openvswitch-switch qemu-kvm libvirt-bin

Ubuntu Box has 2 NIC

eth0 - only management traffic which is connected to Cisco 3560X port number g0/44 eth1 - Traffic for VM’s(all vlans) - connected to Cisco 3560X port number g0/46

Cisco Configuration

interface GigabitEthernet0/44
 description *** Connected Monitoring02 eth0 ***
 switchport access vlan 20
 switchport mode access
 spanning-tree portfast

 interface GigabitEthernet0/46
 description *** Connected Monitoring02 eth1 ***
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 21-29
 switchport mode trunk

Update network configuration in ubuntu

edit /etc/network/interfaces

auto lo
iface lo inet loopback

# The primary network interface
auto eth0


allow-hotplug eth0
iface eth0 inet static
        address 10.29.20.62
        netmask 255.255.255.0
        network 10.29.20.0
        broadcast 10.29.20.255
        gateway 10.29.20.1
        dns-nameservers 8.8.8.8

auto eth1
iface eth1 inet manual

Openvswitch configuration

ovs-vsctl add-br ovs-switch          ### create bridge name
ovs-vsctl add-port ovs-switch eth1 ### add physical port to bridge

ovs-vsctl show  ### check configuration
fdae1b4b-d255-41f2-b764-c535a24f5ccc
    Bridge ovs-switch
        Port "eth1"
            Interface "eth1"
        Port ovs-switch
            Interface ovs-switch
                type: internal
    ovs_version: "2.0.2"

Delete default network setting and update, Here vlan 25, we made it as a default network

cd /etc/libvirt/qemu/networks/
root@monitoring:/etc/libvirt/qemu/networks# ls
autostart  default.xml
root@monitoring:/etc/libvirt/qemu/networks# > default.xml 

Edit /etc/libvirt/qemu/network/default.xml

<network>
  <name>default</name>
  <forward mode='bridge'/>
  <bridge name='ovs-switch'/>
  <virtualport type='openvswitch'/>
  <portgroup name='vlan-20'>
    <vlan>
      <tag id='20'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-21'>
    <vlan>
      <tag id='21'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-22'>
    <vlan>
      <tag id='22'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-23'>
    <vlan>
      <tag id='23'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-24'>
    <vlan>
      <tag id='24'/>
    </vlan>
  </portgroup>

  <portgroup name='vlan-25' default='yes'>
    <vlan>
      <tag id='25'/>
    </vlan>
  </portgroup>

  <portgroup name='vlan-26'>
    <vlan>
      <tag id='26'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-27'>
    <vlan>
      <tag id='27'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-28'>
    <vlan>
      <tag id='28'/>
    </vlan>
  </portgroup>
  <portgroup name='vlan-29'>
    <vlan>
      <tag id='29'/>
    </vlan>
  </portgroup>
</network>

Restart libvirt-bin

/etc/init.d/libvirt-bin restart 

Finally reboot the ubuntu box

VM Guest install

virt-install \
--name debian7 \
--ram 1024 \
--disk path=./debian7.img,bus=virtio,size=15 \
--vcpus 2 \
--os-type linux \
--os-variant debianwheezy \
--graphics none \
--console pty,target_type=serial \
--location 'http://ftp.us.debian.org/debian/dists/wheezy/main/installer-amd64/' \
--extra-args 'console=ttyS0,115200n8 serial'