NetScaler VPX 12-1
在 KVM 上配置 Citrix ADC VPX 实例以使用基于 OVS DPDK 的主机接口
您可以对 KVM（Fedora 和 RHOS）上运行的 Citrix ADC VPX 实例进行配置以结合使用 Open vSwitch (OVS) 与数据平面开发工具包 (Data Plane Development Kit, DPDK) ，从而提高网络性能。 本文档介绍如何配置 Citrix ADC VPX 实例以在 KVM 主机上由 OVS-DPDK 公开的 vhost-user 端口上运行。
OVS是一个根据开源 Apache 2.0 许可证授权的多层虚拟交换机。 DPDK 是一组用于快速数据包处理的库和驱动程序。
以下 Fedora、RHOS、OVS 和 DPDK 版本适合配置 Citrix ADC VPX 实例：
| Fedora | RHOS |
|---|---|
| Fedora 25 | RHOS 7.4 |
| OVS 2.7.0 | OVS 2.6.1 |
| DPDK 16.11.12 | DPDK 16.11.12 |
必备条件
在安装 DPDK 之前，请确保主机有 1 GB 的大页面。
有关更多信息，请参阅此DPDK 系统要求文档。 以下是在 KVM 上配置 Citrix ADC VPX 实例以使用基于 OVS DPDK 的主机接口所需步骤的摘要：
- 安装 DPDK。
- 构建和安装 OVS。
- 创建 OVS 桥接。
- 将物理接口附加到 OVS 桥接。
- 将 vhost-user 端口附加到 OVS 数据路径。
- 配置具有基于 OVS-DPDK 的 vhost-user 端口的 KVM-VPX。
安装 DPDK
要安装 DPDK，请按照此 Open vSwitch with DPDK文档中给出的说明进行操作。
构建和安装 OVS
从 OVS 下载 页面下载OVS。 接下来，使用 DPDK 数据路径构建并安装 OVS。 按照安 装打开 vSwitch 文档中的说明进行操作。
有关更多详细信息，请参阅《 Linux 版 DPDK 入门指南》。
创建 OVS 桥接
根据您的需要，键入 Fedora 或 RHOS 命令以创建 OVS 桥接：
Fedora 命令：
> $OVS_DIR/utilities/ovs-vsctl add-br ovs-br0 -- set bridge ovs-br0 datapath_type=netdev
RHOS 命令：
ovs-vsctl add-br ovs-br0 -- set bridge ovs-br0 datapath_type=netdev
将物理接口连接到 OVS 网桥
键入以下 Fedora 或 RHOS 命令将端口绑定到 DPDK ，然后将其附加到 OVS 桥接：
Fedora 命令：
> $OVS_DIR/utilities/ovs-vsctl add-port ovs-br0 dpdk0 -- set Interface dpdk0 type=dpdk options:dpdk-devargs=0000:03:00.0
> $OVS_DIR/utilities/ovs-vsctl add-port ovs-br0 dpdk1 -- set Interface dpdk1 type=dpdk options:dpdk-devargs=0000:03:00.1
RHOS 命令：
ovs-vsctl add-port ovs-br0 dpdk0 -- set Interface dpdk0 type=dpdk options:dpdk-devargs=0000:03:00.0
ovs-vsctl add-port ovs-br0 dpdk1 -- set Interface dpdk1 type=dpdk options:dpdk-devargs=0000:03:00.1
作为选项的一部分显示的 dpdk-devargs 指定了相应物理 NIC 的 PCI BDF。
将 vhost-user 端口附加到 OVS 数据路径
键入以下 Fedora 或 RHOS 命令将 vhost-user 端口附加到 OVS 数据路径：
Fedora 命令：
> $OVS_DIR/utilities/ovs-vsctl add-port ovs-br0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser -- set Interface vhost-user1 mtu_request=9000
> $OVS_DIR/utilities/ovs-vsctl add-port ovs-br0 vhost-user2 -- set Interface vhost-user2 type=dpdkvhostuser -- set Interface vhost-user2 mtu_request=9000
chmod g+w /usr/local/var/run/openvswitch/vhost*
RHOS 命令：
ovs-vsctl add-port ovs-br0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser -- set Interface vhost-user1 mtu_request=9000
ovs-vsctl add-port ovs-br0 vhost-user2 -- set Interface vhost-user2 type=dpdkvhostuser -- set Interface vhost-user2 mtu_request=9000
chmod g+w /var/run/openvswitch/vhost*
使用基于 OVS-DPDK 的 vhost-user 端口配置 KVM-VPX
您可以使用以下 QEMU 命令仅从 CLI 使用基于 OVS-DPDK 的 vhost-user 端口在 Fedora KVM 上配置 VPX 实例： Fedora 命令：
qemu-system-x86_64 -name KVM-VPX -cpu host -enable-kvm -m 4096M \
-object memory-backend-file,id=mem,size=4096M,mem-path=/dev/hugepages,share=on -numa node,memdev=mem \
-mem-prealloc -smp sockets=1,cores=2 -drive file=<absolute-path-to-disc-image-file>,if=none,id=drive-ide0-0-0,format=<disc-image-format> \
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
-netdev type=tap,id=hostnet0,script=no,downscript=no,vhost=on \
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:3c:d1:ae,bus=pci.0,addr=0x3 \
-chardev socket,id=char0,path=</usr/local/var/run/openvswitch/vhost-user1> \
-netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce -device virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mrg_rxbuf=on \
-chardev socket,id=char1,path=</usr/local/var/run/openvswitch/vhost-user2> \
-netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce -device virtio-net
pci,mac=00:00:00:00:00:02,netdev=mynet2,mrg_rxbuf=on \
--nographic
对于 RHOS，请使用以下示例 XML 文件通过 virsh 配置 Citrix ADC VPX 实例。
<domain type='kvm'\>
<name\>dpdk-vpx1\</name\>
<uuid\>aedb844b-f6bc-48e6-a4c6-36577f2d68d6\</uuid\>
<memory unit='KiB'\>16777216\</memory\>
<currentMemory unit='KiB'\>16777216\</currentMemory\>
<memoryBacking\>
<hugepages\>
<page size='1048576' unit='KiB'/\>
</hugepages\>
</memoryBacking\>
<vcpu placement='static'\>6\</vcpu\>
<cputune\>
<shares\>4096\</shares\>
<vcpupin vcpu='0' cpuset='0'/\>
<vcpupin vcpu='1' cpuset='2'/\>
<vcpupin vcpu='2' cpuset='4'/\>
<vcpupin vcpu='3' cpuset='6'/\>
<emulatorpin cpuset='0,2,4,6'/\>
</cputune\>
<numatune\>
<memory mode='strict' nodeset='0'/\>
</numatune\>
<resource\>
<partition\>/machine\</partition\>
</resource\>
<os\>
<type arch='x86\_64' machine='pc-i440fx-rhel7.0.0'\>hvm\</type\>
<boot dev='hd'/\>
</os\>
<features\>
<acpi/\>
<apic/\>
</features\>
<cpu mode='custom' match='minimum' check='full'\>
<model fallback='allow'\>Haswell-noTSX\</model\>
<vendor\>Intel\</vendor\>
<topology sockets='1' cores='6' threads='1'/\>
<feature policy='require' name='ss'/\>
<feature policy='require' name='pcid'/\>
<feature policy='require' name='hypervisor'/\>
<feature policy='require' name='arat'/\>
<domain type='kvm'\>
<name\>dpdk-vpx1\</name\>
<uuid\>aedb844b-f6bc-48e6-a4c6-36577f2d68d6\</uuid\>
<memory unit='KiB'\>16777216\</memory\>
<currentMemory unit='KiB'\>16777216\</currentMemory\>
<memoryBacking\>
<hugepages\>
<page size='1048576' unit='KiB'/\>
</hugepages\>
</memoryBacking\>
<vcpu placement='static'\>6\</vcpu\>
<cputune\>
<shares\>4096\</shares\>
<vcpupin vcpu='0' cpuset='0'/\>
<vcpupin vcpu='1' cpuset='2'/\>
<vcpupin vcpu='2' cpuset='4'/\>
<vcpupin vcpu='3' cpuset='6'/\>
<emulatorpin cpuset='0,2,4,6'/\>
</cputune\>
<numatune\>
<memory mode='strict' nodeset='0'/\>
</numatune\>
<resource\>
<partition\>/machine\</partition\>
</resource\>
<os\>
<type arch='x86\_64' machine='pc-i440fx-rhel7.0.0'\>hvm\</type\>
<boot dev='hd'/\>
</os\>
<features\>
<acpi/\>
<apic/\>
</features\>
<cpu mode='custom' match='minimum' check='full'\>
<model fallback='allow'\>Haswell-noTSX\</model\>
<vendor\>Intel\</vendor\>
<topology sockets='1' cores='6' threads='1'/\>
<feature policy='require' name='ss'/\>
<feature policy='require' name='pcid'/\>
<feature policy='require' name='hypervisor'/\>
<feature policy='require' name='arat'/\>
<feature policy='require' name='tsc\_adjust'/\>
<feature policy='require' name='xsaveopt'/\>
<feature policy='require' name='pdpe1gb'/\>
<numa\>
<cell id='0' cpus='0-5' memory='16777216' unit='KiB' memAccess='shared'/\>
</numa\>
</cpu\>
<clock offset='utc'/\>
<on\_poweroff\>destroy\</on\_poweroff\>
<on\_reboot\>restart\</on\_reboot\>
<on\_crash\>destroy\</on\_crash\>
<devices\>
<emulator\>/usr/libexec/qemu-kvm\</emulator\>
<disk type='file' device='disk'\>
<driver name='qemu' type='qcow2' cache='none'/\>
<source file='/home/NSVPX-KVM-12.0-52.18\_nc.qcow2'/\>
<target dev='vda' bus='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/\>
</disk\>
<controller type='ide' index='0'\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/\>
</controller\>
<controller type='usb' index='0' model='piix3-uhci'\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/\>
</controller\>
<controller type='pci' index='0' model='pci-root'/\>
<interface type='direct'\>
<mac address='52:54:00:bb:ac:05'/\>
<source dev='enp129s0f0' mode='bridge'/\>
<model type='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/\>
</interface\>
<interface type='vhostuser'\>
<mac address='52:54:00:55:55:56'/\>
<source type='unix' path='/var/run/openvswitch/vhost-user1' mode='client'/\>
<model type='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/\>
</interface\>
<interface type='vhostuser'\>
<mac address='52:54:00:2a:32:64'/\>
<source type='unix' path='/var/run/openvswitch/vhost-user2' mode='client'/\>
<model type='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/\>
</interface\>
<interface type='vhostuser'\>
<mac address='52:54:00:2a:32:74'/\>
<source type='unix' path='/var/run/openvswitch/vhost-user3' mode='client'/\>
<model type='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/\>
</interface\>
<interface type='vhostuser'\>
<mac address='52:54:00:2a:32:84'/\>
<source type='unix' path='/var/run/openvswitch/vhost-user4' mode='client'/\>
<model type='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/\>
</interface\>
<serial type='pty'\>
<target port='0'/\>
</serial\>
<console type='pty'\>
<target type='serial' port='0'/\>
</console\>
<input type='mouse' bus='ps2'/\>
<input type='keyboard' bus='ps2'/\>
<graphics type='vnc' port='-1' autoport='yes'\>
<listen type='address'/\>
</graphics\>
<video\>
<model type='cirrus' vram='16384' heads='1' primary='yes'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/\>
</video\>
<memballoon model='virtio'\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/\>
</memballoon\>
</devices\>
</domain
## Points to note
In the XML file, the hugepage size must be 1 GB, as shown in the sample file.
<memoryBacking\>
<hugepages\>
<page size='1048576' unit='KiB'/\>
</hugepages\>
Also, in the sample file vhost-user1 is the vhostuser port bound to ovs-br0.
<interface type='vhostuser'\>
<mac address='52:54:00:55:55:56'/\>
<source type='unix' path='/var/run/openvswitch/vhost-user1' mode='client'/\>
<model type='virtio'/\>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/\>
</interface\>
要启动 Citrix ADC VPX 实例，请开始使用 virsh 命令。
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在 KVM 上配置 Citrix ADC VPX 实例以使用基于 OVS DPDK 的主机接口
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