.. This work is licensed under a Creative Commons Attribution 4.0 International .. License. .. http://creativecommons.org/licenses/by/4.0 .. (c) OPNFV, 2016-2018 Intel Corporation. Yardstick - NSB Testing - Operation =================================== Abstract -------- NSB test configuration and OpenStack setup requirements OpenStack Network Configuration ------------------------------- NSB requires certain OpenStack deployment configurations. For optimal VNF characterization using external traffic generators NSB requires provider/external networks. Provider networks ^^^^^^^^^^^^^^^^^ The VNFs require a clear L2 connect to the external network in order to generate realistic traffic from multiple address ranges and ports. In order to prevent Neutron from filtering traffic we have to disable Neutron Port Security. We also disable DHCP on the data ports because we are binding the ports to DPDK and do not need DHCP addresses. We also disable gateways because multiple default gateways can prevent SSH access to the VNF from the floating IP. We only want a gateway on the mgmt network .. code-block:: yaml uplink_0: cidr: '10.1.0.0/24' gateway_ip: 'null' port_security_enabled: False enable_dhcp: 'false' Heat Topologies ^^^^^^^^^^^^^^^ By default Heat will attach every node to every Neutron network that is created. For scale-out tests we do not want to attach every node to every network. For each node you can specify which ports are on which network using the network_ports dictionary. In this example we have ``TRex xe0 <-> xe0 VNF xe1 <-> xe0 UDP_Replay`` .. code-block:: yaml vnf_0: floating_ip: true placement: "pgrp1" network_ports: mgmt: - mgmt uplink_0: - xe0 downlink_0: - xe1 tg_0: floating_ip: true placement: "pgrp1" network_ports: mgmt: - mgmt uplink_0: - xe0 # Trex always needs two ports uplink_1: - xe1 tg_1: floating_ip: true placement: "pgrp1" network_ports: mgmt: - mgmt downlink_0: - xe0 Availability zone ^^^^^^^^^^^^^^^^^ The configuration of the availability zone is requred in cases where location of exact compute host/group of compute hosts needs to be specified for :term:`SampleVNF` or traffic generator in the heat test case. If this is the case, please follow the instructions below. .. _`Create a host aggregate`: 1. Create a host aggregate in the OpenStack and add the available compute hosts into the aggregate group. .. note:: Change the ```` (availability zone name), ```` (host aggregate name) and ```` (host name of one of the compute) in the commands below. .. code-block:: bash # create host aggregate openstack aggregate create --zone \ --property availability_zone= # show available hosts openstack compute service list --service nova-compute # add selected host into the host aggregate openstack aggregate add host 2. To specify the OpenStack location (the exact compute host or group of the hosts) of SampleVNF or traffic generator in the heat test case, the ``availability_zone`` server configuration option should be used. For example: .. note:: The ```` (availability zone name) should be changed according to the name used during the host aggregate creation steps above. .. code-block:: yaml context: name: yardstick image: yardstick-samplevnfs ... servers: vnf__0: ... availability_zone: ... tg__0: ... availability_zone: ... networks: ... There are two example of SampleVNF scale out test case which use the ``availability zone`` feature to specify the exact location of scaled VNFs and traffic generators. Those are: .. code-block:: console /samples/vnf_samples/nsut/prox/tc_prox_heat_context_l2fwd_multiflow-2-scale-out.yaml /samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex_scale_out.yaml .. note:: This section describes the PROX scale-out testcase, but the same procedure is used for the vFW test case. 1. Before running the scale-out test case, make sure the host aggregates are configured in the OpenStack environment. To check this, run the following command: .. code-block:: console # show configured host aggregates (example) openstack aggregate list +----+------+-------------------+ | ID | Name | Availability Zone | +----+------+-------------------+ | 4 | agg0 | AZ_NAME_0 | | 5 | agg1 | AZ_NAME_1 | +----+------+-------------------+ 2. If no host aggregates are configured, please follow the instructions to `Create a host aggregate`_ 3. Run the SampleVNF PROX scale-out test case, specifying the ``availability zone`` of each VNF and traffic generator as task arguments. .. note:: The ``az_0`` and ``az_1`` should be changed according to the host aggregates created in the OpenStack. .. code-block:: console yardstick -d task start \ /samples/vnf_samples/nsut/prox/tc_prox_heat_context_l2fwd_multiflow-2-scale-out.yaml\ --task-args='{ "num_vnfs": 4, "availability_zone": { "vnf_0": "az_0", "tg_0": "az_1", "vnf_1": "az_0", "tg_1": "az_1", "vnf_2": "az_0", "tg_2": "az_1", "vnf_3": "az_0", "tg_3": "az_1" } }' ``num_vnfs`` specifies how many VNFs are going to be deployed in the ``heat`` contexts. ``vnf_X`` and ``tg_X`` arguments configure the availability zone where the VNF and traffic generator is going to be deployed. Collectd KPIs ------------- NSB can collect KPIs from collected. We have support for various plugins enabled by the :term:`Barometer` project. The default yardstick-samplevnf has collectd installed. This allows for collecting KPIs from the VNF. Collecting KPIs from the NFVi is more complicated and requires manual setup. We assume that collectd is not installed on the compute nodes. To collectd KPIs from the NFVi compute nodes: * install_collectd on the compute nodes * create pod.yaml for the compute nodes * enable specific plugins depending on the vswitch and DPDK example ``pod.yaml`` section for Compute node running collectd. .. code-block:: yaml - name: "compute-1" role: Compute ip: "10.1.2.3" user: "root" ssh_port: "22" password: "" collectd: interval: 5 plugins: # for libvirtd stats virt: {} intel_pmu: {} ovs_stats: # path to OVS socket ovs_socket_path: /var/run/openvswitch/db.sock intel_rdt: {} Scale-Up -------- VNFs performance data with scale-up * Helps to figure out optimal number of cores specification in the Virtual Machine template creation or VNF * Helps in comparison between different VNF vendor offerings * Better the scale-up index, indicates the performance scalability of a particular solution Heat ^^^^ For VNF scale-up tests we increase the number for VNF worker threads. In the case of VNFs we also need to increase the number of VCPUs and memory allocated to the VNF. An example scale-up Heat testcase is: .. literalinclude:: /../samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex_scale-up.yaml :language: yaml This testcase template requires specifying the number of VCPUs, Memory and Ports. We set the VCPUs and memory using the ``--task-args`` options .. code-block:: console yardstick task start --task-args='{"mem": 10480, "vcpus": 4, "vports": 2}' \ samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex_scale-up.yaml In order to support ports scale-up, traffic and topology templates need to be used in testcase. A example topology template is: .. literalinclude:: /../samples/vnf_samples/nsut/vfw/vfw-tg-topology-scale-up.yaml :language: yaml This template has ``vports`` as an argument. To pass this argument it needs to be configured in ``extra_args`` scenario definition. Please note that more argument can be defined in that section. All of them will be passed to topology and traffic profile templates For example: .. code-block:: yaml schema: yardstick:task:0.1 scenarios: - type: NSPerf traffic_profile: ../../traffic_profiles/ipv4_throughput-scale-up.yaml extra_args: vports: {{ vports }} topology: vfw-tg-topology-scale-up.yaml A example traffic profile template is: .. literalinclude:: /../samples/vnf_samples/traffic_profiles/ipv4_throughput-scale-up.yaml :language: yaml There is an option to provide predefined config for SampleVNFs. Path to config file may by specified in ``vnf_config`` scenario section. .. code-block:: yaml vnf__0: rules: acl_1rule.yaml vnf_config: {lb_config: 'SW', file: vfw_vnf_pipeline_cores_4_ports_2_lb_1_sw.conf } Baremetal ^^^^^^^^^ 1. Follow above traffic generator section to setup. 2. Edit num of threads in ``/samples/vnf_samples/nsut/vfw/tc_baremetal_rfc2544_ipv4_1rule_1flow_64B_trex_scale_up.yaml`` e.g, 6 Threads for given VNF .. code-block:: yaml schema: yardstick:task:0.1 scenarios: {% for worker_thread in [1, 2 ,3 , 4, 5, 6] %} - type: NSPerf traffic_profile: ../../traffic_profiles/ipv4_throughput.yaml topology: vfw-tg-topology.yaml nodes: tg__0: trafficgen_1.yardstick vnf__0: vnf.yardstick options: framesize: uplink: {64B: 100} downlink: {64B: 100} flow: src_ip: [{'tg__0': 'xe0'}] dst_ip: [{'tg__0': 'xe1'}] count: 1 traffic_type: 4 rfc2544: allowed_drop_rate: 0.0001 - 0.0001 vnf__0: rules: acl_1rule.yaml vnf_config: {lb_config: 'HW', lb_count: 1, worker_config: '1C/1T', worker_threads: {{worker_thread}}} nfvi_enable: True runner: type: Iteration iterations: 10 interval: 35 {% endfor %} context: type: Node name: yardstick nfvi_type: baremetal file: /etc/yardstick/nodes/pod.yaml Scale-Out --------- VNFs performance data with scale-out helps * capacity planning to meet the given network node requirements * comparison between different VNF vendor offerings * better the scale-out index, provides the flexibility in meeting future capacity requirements Standalone ^^^^^^^^^^ Scale-out not supported on Baremetal. 1. Follow above traffic generator section to setup. 2. Generate testcase for standalone virtualization using ansible scripts .. code-block:: console cd /ansible trex: standalone_ovs_scale_out_trex_test.yaml or standalone_sriov_scale_out_trex_test.yaml ixia: standalone_ovs_scale_out_ixia_test.yaml or standalone_sriov_scale_out_ixia_test.yaml ixia_correlated: standalone_ovs_scale_out_ixia_correlated_test.yaml or standalone_sriov_scale_out_ixia_correlated_test.yaml update the ovs_dpdk or sriov above Ansible scripts reflect the setup 3. run the test .. code-block:: console /samples/vnf_samples/nsut/tc_sriov_vfw_udp_ixia_correlated_scale_out-1.yaml /samples/vnf_samples/nsut/tc_sriov_vfw_udp_ixia_correlated_scale_out-2.yaml Heat ^^^^ There are sample scale-out all-VM Heat tests. These tests only use VMs and don't use external traffic. The tests use UDP_Replay and correlated traffic. .. code-block:: console /samples/vnf_samples/nsut/cgnapt/tc_heat_rfc2544_ipv4_1flow_64B_trex_correlated_scale_4.yaml To run the test you need to increase OpenStack CPU, Memory and Port quotas. Traffic Generator tuning ------------------------ The TRex traffic generator can be setup to use multiple threads per core, this is for multiqueue testing. TRex does not automatically enable multiple threads because we currently cannot detect the number of queues on a device. To enable multiple queue set the ``queues_per_port`` value in the TG VNF options section. .. code-block:: yaml scenarios: - type: NSPerf nodes: tg__0: tg_0.yardstick options: tg_0: queues_per_port: 2 Standalone configuration ------------------------ NSB supports certain Standalone deployment configurations. Standalone supports provisioning a VM in a standalone visualised environment using kvm/qemu. There two types of Standalone contexts available: OVS-DPDK and SRIOV. OVS-DPDK uses OVS network with DPDK drivers. SRIOV enables network traffic to bypass the software switch layer of the Hyper-V stack. Emulated machine type ^^^^^^^^^^^^^^^^^^^^^ For better performance test results of emulated VM spawned by Yardstick SA context (OvS-DPDK/SRIOV), it may be important to control the emulated machine type used by QEMU emulator. This attribute can be configured via TC definition in ``contexts`` section under ``extra_specs`` configuration. For example: .. code-block:: yaml contexts: ... - type: StandaloneSriov ... flavor: ... extra_specs: ... machine_type: pc-i440fx-bionic Where, ``machine_type`` can be set to one of the emulated machine type supported by QEMU running on SUT platform. To get full list of supported emulated machine types, the following command can be used on the target SUT host. .. code-block:: yaml # qemu-system-x86_64 -machine ? By default, the ``machine_type`` option is set to ``pc-i440fx-xenial`` which is suitable for running Ubuntu 16.04 VM image. So, if this type is not supported by the target platform or another VM image is used for stand alone (SA) context VM (e.g.: ``bionic`` image for Ubuntu 18.04), this configuration should be changed accordingly. Standalone with OVS-DPDK ^^^^^^^^^^^^^^^^^^^^^^^^ SampleVNF image is spawned in a VM on a baremetal server. OVS with DPDK is installed on the baremetal server. .. note:: Ubuntu 17.10 requires DPDK v.17.05 and higher, DPDK v.17.05 requires OVS v.2.8.0. Default values for OVS-DPDK: * queues: 4 * lcore_mask: "" * pmd_cpu_mask: "0x6" Sample test case file ^^^^^^^^^^^^^^^^^^^^^ 1. Prepare SampleVNF image and copy it to ``flavor/images``. 2. Prepare context files for TREX and SampleVNF under ``contexts/file``. 3. Add bridge named ``br-int`` to the baremetal where SampleVNF image is deployed. 4. Modify ``networks/phy_port`` accordingly to the baremetal setup. 5. Run test from: .. literalinclude:: /../samples/vnf_samples/nsut/acl/tc_ovs_rfc2544_ipv4_1rule_1flow_64B_trex.yaml :language: yaml Preparing test run of vEPC test case ------------------------------------ Provided vEPC test cases are examples of emulation of vEPC infrastructure components, such as UE, eNodeB, MME, SGW, PGW. Location of vEPC test cases: ``samples/vnf_samples/nsut/vepc/``. Before running a specific vEPC test case using NSB, some preconfiguration needs to be done. Update Spirent Landslide TG configuration in pod file ===================================================== Examples of ``pod.yaml`` files could be found in :file:`etc/yardstick/nodes/standalone`. The name of related pod file could be checked in the context section of NSB test case. The ``pod.yaml`` related to vEPC test case uses some sub-structures that hold the details of accessing the Spirent Landslide traffic generator. These subsections and the changes to be done in provided example pod file are described below. 1. ``tas_manager``: data under this key holds the information required to access Landslide TAS (Test Administration Server) and perform needed configurations on it. * ``ip``: IP address of TAS Manager node; should be updated according to test setup used * ``super_user``: superuser name; could be retrieved from Landslide documentation * ``super_user_password``: superuser password; could be retrieved from Landslide documentation * ``cfguser_password``: password of predefined user named 'cfguser'; default password could be retrieved from Landslide documentation * ``test_user``: username to be used during test run as a Landslide library name; to be defined by test run operator * ``test_user_password``: password of test user; to be defined by test run operator * ``proto``: *http* or *https*; to be defined by test run operator * ``license``: Landslide license number installed on TAS 2. The ``config`` section holds information about test servers (TSs) and systems under test (SUTs). Data is represented as a list of entries. Each such entry contains: * ``test_server``: this subsection represents data related to test server configuration, such as: * ``name``: test server name; unique custom name to be defined by test operator * ``role``: this value is used as a key to bind specific Test Server and TestCase; should be set to one of test types supported by TAS license * ``ip``: Test Server IP address * ``thread_model``: parameter related to Test Server performance mode. The value should be one of the following: "Legacy" | "Max" | "Fireball". Refer to Landslide documentation for details. * ``phySubnets``: a structure used to specify IP ranges reservations on specific network interfaces of related Test Server. Structure fields are: * ``base``: start of IP address range * ``mask``: IP range mask in CIDR format * ``name``: network interface name, e.g. *eth1* * ``numIps``: size of IP address range * ``preResolvedArpAddress``: a structure used to specify the range of IP addresses for which the ARP responses will be emulated * ``StartingAddress``: IP address specifying the start of IP address range * ``NumNodes``: size of the IP address range * ``suts``: a structure that contains definitions of each specific SUT (represents a vEPC component). SUT structure contains following key/value pairs: * ``name``: unique custom string specifying SUT name * ``role``: string value corresponding with an SUT role specified in the session profile (test session template) file * ``managementIp``: SUT management IP adress * ``phy``: network interface name, e.g. *eth1* * ``ip``: vEPC component IP address used in test case topology * ``nextHop``: next hop IP address, to allow for vEPC inter-node communication Update NSB test case definitions ================================ NSB test case file designated for vEPC testing contains an example of specific test scenario configuration. Test operator may change these definitions as required for the use case that requires testing. Specifically, following subsections of the vEPC test case (section **scenarios**) may be changed. 1. Subsection ``options``: contains custom parameters used for vEPC testing * subsection ``dmf``: may contain one or more parameters specified in ``traffic_profile`` template file * subsection ``test_cases``: contains re-definitions of parameters specified in ``session_profile`` template file .. note:: All parameters in ``session_profile``, value of which is a placeholder, needs to be re-defined to construct a valid test session. 2. Subsection ``runner``: specifies the test duration and the interval of TG and VNF side KPIs polling. For more details, refer to :doc:`03-architecture`.