OVS + dpdk 安装与实验环境配置

***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

 

 

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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：

             vm0.xml

      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

 

 

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参考文档：

       http://docs.openvswitch.org/en/latest/howto/userspace-tunneling/

       http://docs.openvswitch.org/en/latest/topics/dpdk/vhost-user/

       https://libvirt.org/formatdomain.html#elementVhostuser

       http://www.sdnlab.com/16593.html