***DPDK datapath的OVS的安装与实验环境配置
首先肯定是DPDK的安装
0:安装必要的工具
make
gcc
libssl
libcap-ng0
libtool
autoconf
python 2.7
python module six(可用PIP安装)
1:设置hugepages,host最好有4G以上的内存可用,
共搞1024个hugepage,每个page 2M,所以光hugepages就占用2G内存
$ grep Huge /proc/meminfo
$ echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
$ mkdir /mnt/huge
$ mount -t hugetlbfs nodev /mnt/huge
2:编译DPDK,在DPDK源代码目录中
设置环境变量
DPDK_DIR = "DPDK源代码目录"
$ export DPDK_TARGET=x86_64-native-linuxapp-gcc
$ export DPDK_BUILD=$DPDK_DIR/$DPDK_TARGET
编译
$ make install T=$DPDK_TARGET DESTDIR=install
3:安装OVS,在OVS源代码目录中
3.1:配置configure
$ ./boot.sh
$ ./configure --with-dpdk=$DPDK_BUILD
3.2:编译OVS
$ make
3.3:安装OVS
$ make install
3.4:创建OVSDB schema
$ mkdir -p /usr/local/etc/openvswitch
$ ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
3.5:启动OVSDB
$ mkdir -p /usr/local/var/run/openvswitch
$ ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
--remote=db:Open_vSwitch,Open_vSwitch,manager_options \
--private-key=db:Open_vSwitch,SSL,private_key \
--certificate=db:Open_vSwitch,SSL,certificate \
--bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
--pidfile --detach --log-file=/root/log/ovsdb-server.log
4:挂载兼容的UIO驱动模块
$ modprobe uio_pci_generic
或
$ modprobe vfio-pci
$ chmod a+x /dev/vfio
$ chmod 0666 /dev/vfio/*
5:把网卡绑定到兼容的UIO驱动上
6:启动vswitchd
$ export DB_SOCK=/usr/local/var/run/openvswitch/db.sock
$ ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
$ ovs-vswitchd unix:$DB_SOCK --pidfile --detach --log-file=/root/log/ovs-vswitchd.log
7:创建datapath为netdev类型的bridge
$ ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
8:测试:添加dpdk类型的port,
$ ovs-vsctl add-port br0 dpdk0 \
-- set Interface dpdk0 type=dpdk options:dpdk-devargs=00:09.0
接下来就是实验环境了
------------------------------[host 1]---------------------------------------
| |
| (br-int datapath_type=netdev) |
| [vm0]---------[port:vm0 type=dpdkvhostuser] |
| [port:vxlan0 type=vxlan remote_ip=10.0.0.2] |
| |
| |
| (br-phy datapath_type=netdev other_config:hwaddr=aa:aa:aa:aa:aa:aa) |
| [port:dpdk0 type=dpdk options:dpdk-devargs= NIC] |
| |
| |
------------------------- [ NIC binding to DPDK]-----------------------------
|
|
|
|
[physical switch]
|
|
|
|
------------------------- [ NIC binding to DPDK]------------------------------
| |
| |
| [port:dpdk1 type=dpdk options:dpdk-devargs= NIC] |
| (br-phy datapath_type=netdev other_config:hwaddr=bb:bb:bb:bb:bb:bb) |
| |
| |
| [port:vxlan1 type=vxlan remote_ip=10.0.0.1] |
| [port:vm1 type=dpdkvhostuser]------------- [vm1] |
| (br-int datapath_type=netdev) |
| |
------------------------------[host 2]----------------------------------------
在host1与host2上安装好OVS+DPDK,然后执行如下的动作,两个host上执行的动作相同,以host1为例
1:创建br-int
$ ovs-vsctl --may-exist add-br br-int \
-- set Bridge br-int datapath_type=netdev \
-- br-set-external-id br-int bridge-id br-int \
-- set bridge br-int fail-mode=standalone
2:向br-int中添加dpdkvhostuser型port vm0/vm1
对于host1,如下:
$ ovs-vsctl add-port br-int vm0 \
-- set Interface vm0 type=dpdkvhostuser
对于host2,如下:
$ ovs-vsctl add-port br-int vm1 \
-- set Interface vm1 type=dpdkvhostuser
3:创建虚拟机,以virsh配合XML配置文件的形式创建虚拟机,XML文件如下:
4:在虚拟机内,配置IP
对于host1上的vm0
$ ip addr add 192.168.1.1/24
对于host2上的vm1
$ ip addr add 192.168.1.2/24
5:向br-int中添加vxlan tunnel
对于host1,如下:
$ ovs-vsctl add-port br-int vxlan0 \
-- set interface vxlan0 type=vxlan options:remote_ip=10.0.0.2
对于host2,如下:
$ ovs-vsctl add-port br-int vxlan0 \
-- set interface vxlan0 type=vxlan options:remote_ip=10.0.0.1
6:创建br-phy
对于host1,如下:
$ ovs-vsctl --may-exist add-br br-phy \
-- set Bridge br-phy datapath_type=netdev \
-- br-set-external-id br-phy bridge-id br-phy \
-- set bridge br-phy fail-mode=standalone \
other_config:hwaddr=aa:aa:aa:aa:aa:aa
对于host2,如下:
$ ovs-vsctl --may-exist add-br br-phy \
-- set Bridge br-phy datapath_type=netdev \
-- br-set-external-id br-phy bridge-id br-phy \
-- set bridge br-phy fail-mode=standalone \
other_config:hwaddr=bb:bb:bb:bb:bb:bb
7:将物理网卡绑到DPDK兼容的UIO驱动上
略
8:将物理网卡捅到br-phy上
对于host1,如下:
$ ovs-vsctl add-port br-phy dpdk0 \
-- set Interface dpdk0 type=dpdk options:dpdk-devargs=???????
对于host2,如下:
$ ovs-vsctl add-port br-phy dpdk1 \
-- set Interface dpdk0 type=dpdk options:dpdk-devargs=???????
9:配置br-phy
对于host1,如下:
$ ip addr add 10.0.0.1/24 dev br-phy
$ ip link set br-phy up
$ iptables -F
对于host2,如下:
$ ip addr add 10.0.0.2/24 dev br-phy
$ ip link set br-phy up
$ iptables -F
参考文档: