lost and found ( for me ? )

Ubuntu 14.04 : open vswitch

How to install open vswitch.
I posted how to install OVS before, but the following instructions are very easy to install OVS.


I prepared two hosts and these boxes have two interfaces.
I will use one(eth0) for managing hosts and the other(eth1) for open vswith.

- host1
eth0 : assign an IP for managemtn
eth1 : no IPs ( directly connected to host2’s eth1 )

- host2
eth0 : assign an IP for management
eth1 : no IPs ( directly connected to host1’s eth1 )

install openvswitch(OVS) on both hosts.
# apt-get update;apt-get install openvswitch-switch –y

# ovs-vsctl show
   ovs_version: "2.0.1

edit /etc/network/interfaces
# grep -v ^# /etc/network/interfaces

auto lo
iface lo inet loopback

auto em1
iface em1 inet static
       # dns-* options are implemented by the resolvconf package, if installed
       dns-search localdomain

auto br0
auto eth1
allow-ovs br0
iface br0 inet manual
   ovs_type OVSBridge
   ovs_ports eth1

allow-br0 eth1
iface eth1 inet manual
   ovs_bridge br0
   ovs_type OVSPort

# ifup --allow=ovs ovsbr0

# ovs-vsctl show
   Bridge "ovsbr0"
       Port "eth1"
           Interface "eth1"
       Port "ovsbr0"
           Interface "ovsbr0"
               type: internal
   ovs_version: "2.0.1"

# ip addr show ovsbr0
32: ovsbr0: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
   link/ether brd ff:ff:ff:ff:ff:ff

# ip addr show eth1
5: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master ovs-system state UP group default qlen 1000
   link/ether brd ff:ff:ff:ff:ff:ff

I did the same things on the another host.

If you have not installed OVS, you will see following errors
# ifup --allow=ovs ovsbr0
Cannot find device "ovsbr0"
Failed to bring up ovsbr0.

# apt-get install -y openvswitch-switch

# ifup --allow=ovs ovsbr0

edit VM’s xml file to use OVS.
   <interface type='bridge'>
     <mac address='MAC address'/>
     <source bridge='ovsbr0'/>
     <virtualport type='openvswitch'>

start VMs on the both hosts and confirm that both VMs can communicate each other.

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