准備
# yum install openssl-devel RedHat-rpm-config kernel-devel -y
#yum install kvm libvirt python-virtinst qemu-kvm virt-viewer
編譯
# wget http://openvswitch.org/releases/openvswitch-1.9.3.tar.gz
#tar -zxf openvswitch-1.9.3.tar.gz
# cd openvswitch-1.9.3
# cp ../openvswitch-1.9.3.tar.gz ~/rpmbuild/SOURCES/
# cp rhel/openvswitch-kmod.files ~/rpmbuild/SOURCES/
# cp rhel/openvswitch.spec ~/rpmbuild/SPECS/
# rpmbuild -ba ~/rpmbuild/SPECS/openvswitch.spec
# cp rhel/openvswitch-kmod-rhel6.spec ~/rpmbuild/SPECS/
# ls ~/rpmbuild/RPMS/x86_64/ |grep open
kmod-openvswitch-1.9.3-1.el6.x86_64.rpm
openvswitch-1.9.3-1.x86_64.rpm
openvswitch-debuginfo-1.9.3-1.x86_64.rpm
# rpm -ihv openvswitch-1.9.3-1.x86_64.rpm kmod-openvswitch-1.9.3-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:kmod-openvswitch ########################################### [ 50%]
WARNING: /lib/modules/2.6.32-431.el6.x86_64/weak-updates/openvswitch/brcompat.ko needs unknown symbol ovs_dp_ioctl_hook
2:openvswitch ########################################### [100%]
使用openvswitch
# virsh net-destroy default
# virsh net-autostart --disable default
# service openvswitch start
/etc/openvswitch/conf.db does not exist ... (warning).
Creating empty database /etc/openvswitch/conf.db [ OK ]
Starting ovsdb-server [ OK ]
Configuring Open vSwitch system IDs [ OK ]
Inserting openvswitch module [ OK ]
Starting ovs-vswitchd [ OK ]
Enabling gre with iptables [ OK ]
# ovs-vsctl add-br br0
/etc/sysconfig/network-scripts/ifcfg-br0
DEVICE=br0
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=172.16.213.131
NETMASK=255.255.255.0
GATEWAY=172.16.213.2
HOTPLUG=no
/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
DEVICETYPE=ovs
TYPE=OVSPort
OVS_BRIDGE=br0
BOOTPROTO=none
HOTPLUG=no
# service network restart
# ovs-vsctl show
1bc18f94-0b5c-44c2-afd5-ac7d370499f1
Bridge "br0"
Port "eth0"
Interface "eth0"
Port "br0"
Interface "br0"
type: internal
ovs_version: "1.9.3"
在KVM中使用OVS
# yum install bridge-utils tunctl
[root@yinye ~]# virt-install --name=CentOS65 --ram 512 --vcpus=1 -f /root/kvm/centos65.qcow2 --cdrom /root/CentOS-6.5-x86_64-minimal.iso --graphics vnc,listen=0.0.0.0,port=5920, --network bridge=br0
WARNING KVM acceleration not available, using 'qemu'
開始安裝......
ERROR Unable to add bridge br0 port vnet0: Operation not supported
Domain installation does not appear to have been successful.
If it was, you can restart your domain by running:
virsh --connect qemu:///system start centos65
otherwise, please restart your installation.
如果不在命令行指定bridge為openvswitch類型 ，libvirt會嘗試linux默認的bridge，而virt-install又不支持openvswitch。
詳細參考
https://www.redhat.com/archives/libvirt-users/2013-May/msg00043.html
# virt-install --connect qemu:///system --name=centos65 --ram 512 --vcpus=1 -f /home/kvm/centos65.qcow2 --cdrom /home/kvm/CentOS-6.5-x86_64-minimal.iso --graphicsvnc,listen=0.0.0.0,port=5920, --nonetworks
virsh # edit centos65
增加
<interface type='bridge'>
<source bridge='br0'/>
<virtualport type='openvswitch' />
<model type='virtio'/>
</interface>
virsh # start centos65
配置guest os的網卡
# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
TYPE=Ethernet
HWADDR=52:54:00:D8:D7:FB
BOOTPROTO=dhcp
#ifup eth0
更多CentOS相關信息見CentOS 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=14
