openstack部署实战第2版之Open vSwitch
本文是openstack部署实战第2版的实验手册，环境是阿里云上的，系统用得是centos7.2。Open vSwitch 开放的软件虚拟机交换机
安装步骤
# uname -r
3.10.0-327.22.2.el7.x86_64
# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
yum -y install wget openssl-devel kernel-devel
yum groupinstall "Development Tools"
# adduser ovswitch
# su - ovswitch
$wget http://openvswitch.org/releases/openvswitch-2.5.0.tar.gz
$ tar zxvf openvswitch-2.5.0.tar.gz
$ mkdir -p ~/rpmbuild/SOURCES
$ sed 's/openvswitch-kmod, //g' openvswitch-2.5.0/rhel/openvswitch.spec > openvswitch-2.5.0/rhel/openvswitch_no_kmod.spec
$ cp openvswitch-2.5.0.tar.gzrpmbuild/SOURCES/
$ rpmbuild -bb --without check ~/openvswitch-2.5.0/rhel/openvswitch_no_kmod.spec
$ exit
# yum localinstall /home/ovswitch/rpmbuild/RPMS/x86_64/openvswitch-2.5.0-1.x86_64.rpm
# systemctlstart openvswitch.service
# systemctlstatus openvswitch.service -l
# chkconfigopenvswitchon
测试网桥
systemctl stop NetworkManager.service
systemctl disable NetworkManager.service
ovs-vsctl add-brbr0
ovs-vsctl add-port br0 eth1
ovs-vsctl show
d8fb371e-5b17-40af-a358-9a207b4e44e0
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "eth1"
Interface "eth1"
ovs_version: "2.5.0" ##修改前
# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=static
IPADDR=115.29.107.17
NETMASK=255.255.252.0 ##修改后
# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
DEVICETYPE=ovs
TYPE=OVSPort
OVS_BRIDGE=br0
ONBOOT=yes
BOOTPROTO=nono
# cat /etc/sysconfig/network-scripts/ifcfg-br0
DEVICE=br0
DEVICETYPE=ovs
TYPE=OVSBridge
ONBOOT=yes
BOOTPROTO=none
IPADDR=115.29.107.17
NETMASK=255.255.252.0 重启
# systemctl restart network.service
# /etc/init.d/openvswitch restart ##可以用外网连接了 重启后，还是可以生效的
VXLAN，Virtual Extensible LAN，顾名思义，是VLAN的扩展版本。VXLAN技术主要用来增强在云计算环境下网络的扩展能力。
待测试
# ovs-vsctladd-portbr0vx1 -- set interface vx1 type=vxlan options:remote_ip=192.168.10.12
# ovs-vsctl show
1bb23a58-98a5-479e-bc4a-7638aeb8408d
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "eth0"
Interface "eth0"
Port "vx1"
Interface "vx1"
type: vxlan
options: {remote_ip="192.168.10.12"}
ovs_version: "2.5.0"
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