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diff --git a/docs/testing/user/userguide/13-nsb-installation.rst b/docs/testing/user/userguide/13-nsb-installation.rst index 3e0ed0bfb..35f67b92f 100644 --- a/docs/testing/user/userguide/13-nsb-installation.rst +++ b/docs/testing/user/userguide/13-nsb-installation.rst @@ -1,36 +1,43 @@ .. This work is licensed under a Creative Commons Attribution 4.0 International .. License. .. http://creativecommons.org/licenses/by/4.0 -.. (c) OPNFV, 2016-2017 Intel Corporation. +.. (c) OPNFV, 2016-2019 Intel Corporation. -===================================== -Yardstick - NSB Testing -Installation -===================================== +.. + Convention for heading levels in Yardstick documentation: -Abstract -======== + ======= Heading 0 (reserved for the title in a document) + ------- Heading 1 + ^^^^^^^ Heading 2 + +++++++ Heading 3 + ''''''' Heading 4 + + Avoid deeper levels because they do not render well. -The Network Service Benchmarking (NSB) extends the yardstick framework to do -VNF characterization and benchmarking in three different execution -environments viz., bare metal i.e. native Linux environment, standalone virtual -environment and managed virtualized environment (e.g. Open stack etc.). -It also brings in the capability to interact with external traffic generators -both hardware & software based for triggering and validating the traffic -according to user defined profiles. + +================ +NSB Installation +================ + +.. _OVS-DPDK: http://docs.openvswitch.org/en/latest/intro/install/dpdk/ +.. _devstack: https://docs.openstack.org/devstack/pike/> +.. _OVS-DPDK-versions: http://docs.openvswitch.org/en/latest/faq/releases/ + +Abstract +-------- The steps needed to run Yardstick with NSB testing are: * Install Yardstick (NSB Testing). -* Setup/Reference pod.yaml describing Test topology -* Create/Reference the test configuration yaml file. +* Setup/reference ``pod.yaml`` describing Test topology. +* Create/reference the test configuration yaml file. * Run the test case. - Prerequisites -============= +------------- -Refer chapter Yardstick Installation for more information on yardstick -prerequisites +Refer to :doc:`04-installation` for more information on Yardstick +prerequisites. Several prerequisites are needed for Yardstick (VNF testing): @@ -46,11 +53,10 @@ Several prerequisites are needed for Yardstick (VNF testing): * intel-cmt-cat Hardware & Software Ingredients -------------------------------- +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ SUT requirements: - ======= =================== Item Description ======= =================== @@ -63,7 +69,6 @@ SUT requirements: Boot and BIOS settings: - ============= ================================================= Boot settings default_hugepagesz=1G hugepagesz=1G hugepages=16 hugepagesz=2M hugepages=2048 isolcpus=1-11,22-33 @@ -82,94 +87,224 @@ Boot and BIOS settings: Turbo Boost Disabled ============= ================================================= - - Install Yardstick (NSB Testing) -=============================== - -Download the source code and install Yardstick from it - -.. code-block:: console - - git clone https://gerrit.opnfv.org/gerrit/yardstick +------------------------------- - cd yardstick +Yardstick with NSB can be installed using ``nsb_setup.sh``. +The ``nsb_setup.sh`` allows to: - # Switch to latest stable branch - # git checkout <tag or stable branch> - git checkout stable/euphrates +1. Install Yardstick in specified mode: bare metal or container. + Refer :doc:`04-installation`. +2. Install package dependencies on remote servers used as traffic generator or + sample VNF. Install DPDK, sample VNFs, TREX, collectd. + Add such servers to ``install-inventory.ini`` file to either + ``yardstick-standalone`` or ``yardstick-baremetal`` server groups. + It configures IOMMU, hugepages, open file limits, CPU isolation, etc. +3. Build VM image either nsb or normal. The nsb VM image is used to run + Yardstick sample VNF tests, like vFW, vACL, vCGNAPT, etc. + The normal VM image is used to run Yardstick ping tests in OpenStack context. +4. Add nsb or normal VM image to OpenStack together with OpenStack variables. -Configure the network proxy, either using the environment variables or setting -the global environment file: +Firstly, configure the network proxy, either using the environment variables or +setting the global environment file. -.. code-block:: ini +Set environment in the file:: - cat /etc/environment http_proxy='http://proxy.company.com:port' https_proxy='http://proxy.company.com:port' +Set environment variables: + .. code-block:: console export http_proxy='http://proxy.company.com:port' export https_proxy='http://proxy.company.com:port' -The last step is to modify the Yardstick installation inventory, used by -Ansible: +Download the source code and check out the latest stable branch: + +.. code-block:: console + + git clone https://gerrit.opnfv.org/gerrit/yardstick + cd yardstick + # Switch to latest stable branch + git checkout stable/gambia + +Modify the Yardstick installation inventory used by Ansible: .. code-block:: ini - cat ./ansible/yardstick-install-inventory.ini + cat ./ansible/install-inventory.ini [jumphost] - localhost ansible_connection=local - - [yardstick-standalone] - yardstick-standalone-node ansible_host=192.168.1.2 - yardstick-standalone-node-2 ansible_host=192.168.1.3 + localhost ansible_connection=local # section below is only due backward compatibility. # it will be removed later [yardstick:children] jumphost + [yardstick-baremetal] + baremetal ansible_host=192.168.2.51 ansible_connection=ssh + + [yardstick-standalone] + standalone ansible_host=192.168.2.52 ansible_connection=ssh + [all:vars] - ansible_user=root - ansible_pass=root + # Uncomment credentials below if needed + ansible_user=root + ansible_ssh_pass=root + # ansible_ssh_private_key_file=/root/.ssh/id_rsa + # When IMG_PROPERTY is passed neither normal nor nsb set + # "path_to_vm=/path/to/image" to add it to OpenStack + # path_to_img=/tmp/workspace/yardstick-image.img -.. note:: + # List of CPUs to be isolated (not used by default) + # Grub line will be extended with: + # "isolcpus=<ISOL_CPUS> nohz=on nohz_full=<ISOL_CPUS> rcu_nocbs=1<ISOL_CPUS>" + # ISOL_CPUS=2-27,30-55 # physical cpu's for all NUMA nodes, four cpu's reserved - SSH access without password needs to be configured for all your nodes defined in - ``yardstick-install-inventory.ini`` file. - If you want to use password authentication you need to install sshpass +.. warning:: - .. code-block:: console + Before running ``nsb_setup.sh`` make sure python is installed on servers + added to ``yardstick-standalone`` and ``yardstick-baremetal`` groups. + +.. note:: + + SSH access without password needs to be configured for all your nodes + defined in ``install-inventory.ini`` file. + If you want to use password authentication you need to install ``sshpass``:: sudo -EH apt-get install sshpass -To execute an installation for a Bare-Metal or a Standalone context: -.. code-block:: console +.. note:: - ./nsb_setup.sh + A VM image built by other means than Yardstick can be added to OpenStack. + Uncomment and set correct path to the VM image in the + ``install-inventory.ini`` file:: + path_to_img=/tmp/workspace/yardstick-image.img -To execute an installation for an OpenStack context: -.. code-block:: console +.. note:: + + CPU isolation can be applied to the remote servers, like: + ISOL_CPUS=2-27,30-55. Uncomment and modify accordingly in + ``install-inventory.ini`` file. + +By default ``nsb_setup.sh`` pulls Yardstick image based on Ubuntu 16.04 from +docker hub and starts container, builds NSB VM image based on Ubuntu 16.04, +installs packages to the servers given in ``yardstick-standalone`` and +``yardstick-baremetal`` host groups. + +To pull Yardstick built based on Ubuntu 18 run:: + + ./nsb_setup.sh -i opnfv/yardstick-ubuntu-18.04:latest + +To change default behavior modify parameters for ``install.yaml`` in +``nsb_setup.sh`` file. + +Refer chapter :doc:`04-installation` for more details on ``install.yaml`` +parameters. + +To execute an installation for a **BareMetal** or a **Standalone context**:: + + ./nsb_setup.sh + +To execute an installation for an **OpenStack** context:: ./nsb_setup.sh <path to admin-openrc.sh> -Above command setup docker with latest yardstick code. To execute +.. note:: -.. code-block:: console + Yardstick may not be operational after distributive linux kernel update if + it has been installed before. Run ``nsb_setup.sh`` again to resolve this. + +.. warning:: + + The Yardstick VM image (NSB or normal) cannot be built inside a VM. + +.. warning:: + + The ``nsb_setup.sh`` configures huge pages, CPU isolation, IOMMU on the grub. + Reboot of the servers from ``yardstick-standalone`` or + ``yardstick-baremetal`` groups in the file ``install-inventory.ini`` is + required to apply those changes. + +The above commands will set up Docker with the latest Yardstick code. To +execute:: docker exec -it yardstick bash +.. note:: + + It may be needed to configure tty in docker container to extend commandline + character length, for example: + + stty size rows 58 cols 234 + It will also automatically download all the packages needed for NSB Testing -setup. Refer chapter :doc:`04-installation` for more on docker -**Install Yardstick using Docker (recommended)** +setup. Refer chapter :doc:`04-installation` for more on Docker: +:ref:`Install Yardstick using Docker` -System Topology: -================ +Bare Metal context example +^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Let's assume there are three servers acting as TG, sample VNF DUT and jump host. + +Perform following steps to install NSB: + +1. Clone Yardstick repo to jump host. +2. Add TG and DUT servers to ``yardstick-baremetal`` group in + ``install-inventory.ini`` file to install NSB and dependencies. Install + python on servers. +3. Start deployment using docker image based on Ubuntu 16: + +.. code-block:: console + + ./nsb_setup.sh + +4. Reboot bare metal servers. +5. Enter to yardstick container and modify pod yaml file and run tests. + +Standalone context example for Ubuntu 18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Let's assume there are three servers acting as TG, sample VNF DUT and jump host. +Ubuntu 18 is installed on all servers. + +Perform following steps to install NSB: + +1. Clone Yardstick repo to jump host. +2. Add TG server to ``yardstick-baremetal`` group in + ``install-inventory.ini`` file to install NSB and dependencies. + Add server where VM with sample VNF will be deployed to + ``yardstick-standalone`` group in ``install-inventory.ini`` file. + Target VM image named ``yardstick-nsb-image.img`` will be placed to + ``/var/lib/libvirt/images/``. + Install python on servers. +3. Modify ``nsb_setup.sh`` on jump host: + +.. code-block:: console + + ansible-playbook \ + -e IMAGE_PROPERTY='nsb' \ + -e OS_RELEASE='bionic' \ + -e INSTALLATION_MODE='container_pull' \ + -e YARD_IMAGE_ARCH='amd64' ${extra_args} \ + -i install-inventory.ini install.yaml + +4. Start deployment with Yardstick docker images based on Ubuntu 18: + +.. code-block:: console + + ./nsb_setup.sh -i opnfv/yardstick-ubuntu-18.04:latest -o <openrc_file> + +5. Reboot servers. +6. Enter to yardstick container and modify pod yaml file and run tests. + + +System Topology +--------------- .. code-block:: console @@ -180,30 +315,30 @@ System Topology: | | | | | | (1)<-----(1) | | +----------+ +----------+ - trafficgen_1 vnf + trafficgen_0 vnf Environment parameters and credentials -====================================== +-------------------------------------- -Config yardstick conf ---------------------- +Configure yardstick.conf +^^^^^^^^^^^^^^^^^^^^^^^^ -If user did not run 'yardstick env influxdb' inside the container, which will -generate correct ``yardstick.conf``, then create the config file manually (run -inside the container): -:: +If you did not run ``yardstick env influxdb`` inside the container to generate +``yardstick.conf``, then create the config file manually (run inside the +container):: cp ./etc/yardstick/yardstick.conf.sample /etc/yardstick/yardstick.conf vi /etc/yardstick/yardstick.conf -Add trex_path, trex_client_lib and bin_path in 'nsb' section. +Add ``trex_path``, ``trex_client_lib`` and ``bin_path`` to the ``nsb`` +section: -:: +.. code-block:: ini [DEFAULT] debug = True - dispatcher = file, influxdb + dispatcher = influxdb [dispatcher_influxdb] timeout = 5 @@ -218,30 +353,38 @@ Add trex_path, trex_client_lib and bin_path in 'nsb' section. trex_client_lib=/opt/nsb_bin/trex_client/stl Run Yardstick - Network Service Testcases -========================================= - +----------------------------------------- NS testing - using yardstick CLI --------------------------------- +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ See :doc:`04-installation` -.. code-block:: console - +Connect to the Yardstick container:: docker exec -it yardstick /bin/bash - source /etc/yardstick/openstack.creds (only for heat TC if nsb_setup.sh was NOT used) - export EXTERNAL_NETWORK="<openstack public network>" (only for heat TC) + +If you're running ``heat`` testcases and ``nsb_setup.sh`` was not used:: + + source /etc/yardstick/openstack.creds + +In addition to the above, you need to set the ``EXTERNAL_NETWORK`` for +OpenStack:: + + export EXTERNAL_NETWORK="<openstack public network>" + +Finally, you should be able to run the testcase:: + yardstick --debug task start yardstick/samples/vnf_samples/nsut/<vnf>/<test case> Network Service Benchmarking - Bare-Metal -========================================= +----------------------------------------- Bare-Metal Config pod.yaml describing Topology ----------------------------------------------- +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Bare-Metal 2-Node setup -^^^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++++ .. code-block:: console +----------+ +----------+ @@ -251,10 +394,10 @@ Bare-Metal 2-Node setup | | | | | | (n)<-----(n) | | +----------+ +----------+ - trafficgen_1 vnf + trafficgen_0 vnf Bare-Metal 3-Node setup - Correlated Traffic -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++++++++++++++++++ .. code-block:: console +----------+ +----------+ +------------+ @@ -265,21 +408,21 @@ Bare-Metal 3-Node setup - Correlated Traffic | | | | | | | | | |(1)<---->(0)| | +----------+ +----------+ +------------+ - trafficgen_1 vnf trafficgen_2 + trafficgen_0 vnf trafficgen_1 Bare-Metal Config pod.yaml --------------------------- -Before executing Yardstick test cases, make sure that pod.yaml reflects the +^^^^^^^^^^^^^^^^^^^^^^^^^^ +Before executing Yardstick test cases, make sure that ``pod.yaml`` reflects the topology and update all the required fields.:: - cp /etc/yardstick/nodes/pod.yaml.nsb.sample /etc/yardstick/nodes/pod.yaml + cp <yardstick>/etc/yardstick/nodes/pod.yaml.nsb.sample /etc/yardstick/nodes/pod.yaml .. code-block:: YAML nodes: - - name: trafficgen_1 + name: trafficgen_0 role: TrafficGen ip: 1.1.1.1 user: root @@ -298,7 +441,7 @@ topology and update all the required fields.:: dpdk_port_num: 1 local_ip: "152.16.40.20" netmask: "255.255.255.0" - local_mac: "00:00.00:00:00:02" + local_mac: "00:00:00:00:00:02" - name: vnf @@ -343,53 +486,94 @@ topology and update all the required fields.:: if: "xe1" -Network Service Benchmarking - Standalone Virtualization -======================================================== +Standalone Virtualization +------------------------- + +VM can be deployed manually or by Yardstick. If parameter *vm_deploy* is set +to `True` VM will be deployed by Yardstick. Otherwise VM should be deployed +manually. Test case example, context section:: + + contexts: + ... + vm_deploy: True + SR-IOV ------- +^^^^^^ SR-IOV Pre-requisites -^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++ -On Host: - a) Create a bridge for VM to connect to external network +On Host, where VM is created: + 1. Create and configure a bridge named ``br-int`` for VM to connect to + external network. Currently this can be done using VXLAN tunnel. - .. code-block:: console + Execute the following on host, where VM is created:: + ip link add type vxlan remote <Jumphost IP> local <DUT IP> id <ID: 10> dstport 4789 brctl addbr br-int - brctl addif br-int <interface_name> #This interface is connected to internet + brctl addif br-int vxlan0 + ip link set dev vxlan0 up + ip addr add <IP#1, like: 172.20.2.1/24> dev br-int + ip link set dev br-int up - b) Build guest image for VNF to run. - Most of the sample test cases in Yardstick are using a guest image called - ``yardstick-image`` which deviates from an Ubuntu Cloud Server image - Yardstick has a tool for building this custom image with samplevnf. - It is necessary to have ``sudo`` rights to use this tool. + .. note:: You may need to add extra rules to iptable to forward traffic. - Also you may need to install several additional packages to use this tool, by - following the commands below:: + .. code-block:: console - sudo apt-get update && sudo apt-get install -y qemu-utils kpartx + iptables -A FORWARD -i br-int -s <network ip address>/<netmask> -j ACCEPT + iptables -A FORWARD -o br-int -d <network ip address>/<netmask> -j ACCEPT - This image can be built using the following command in the directory where Yardstick is installed + Execute the following on a jump host: - .. code-block:: console + .. code-block:: console - export YARD_IMG_ARCH='amd64' - sudo echo "Defaults env_keep += \'YARD_IMG_ARCH\'" >> /etc/sudoers + ip link add type vxlan remote <DUT IP> local <Jumphost IP> id <ID: 10> dstport 4789 + ip addr add <IP#2, like: 172.20.2.2/24> dev vxlan0 + ip link set dev vxlan0 up - Please use ansible script to generate a cloud image refer to :doc:`04-installation` + .. note:: Host and jump host are different baremetal servers. - for more details refer to chapter :doc:`04-installation` + 2. Modify test case management CIDR. + IP addresses IP#1, IP#2 and CIDR must be in the same network. - .. note:: VM should be build with static IP and should be accessible from yardstick host. + .. code-block:: YAML + + servers: + vnf_0: + network_ports: + mgmt: + cidr: '1.1.1.7/24' + + 3. Build guest image for VNF to run. + Most of the sample test cases in Yardstick are using a guest image called + ``yardstick-nsb-image`` which deviates from an Ubuntu Cloud Server image + Yardstick has a tool for building this custom image with SampleVNF. + It is necessary to have ``sudo`` rights to use this tool. + + Also you may need to install several additional packages to use this tool, by + following the commands below:: + + sudo apt-get update && sudo apt-get install -y qemu-utils kpartx + + This image can be built using the following command in the directory where + Yardstick is installed:: + + export YARD_IMG_ARCH='amd64' + sudo echo "Defaults env_keep += \'YARD_IMG_ARCH\'" >> /etc/sudoers + + For instructions on generating a cloud image using Ansible, refer to + :doc:`04-installation`. + + .. note:: VM should be build with static IP and be accessible from the + Yardstick host. SR-IOV Config pod.yaml describing Topology -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++++++++++++++++ -SR-IOV 2-Node setup: -^^^^^^^^^^^^^^^^^^^^ +SR-IOV 2-Node setup ++++++++++++++++++++ .. code-block:: console +--------------------+ @@ -407,42 +591,42 @@ SR-IOV 2-Node setup: +----------+ +-------------------------+ | | | ^ ^ | | | | | | | - | | (0)<----->(0) | ------ | | - | TG1 | | SUT | | - | | | | | - | | (n)<----->(n) |------------------ | + | | (0)<----->(0) | ------ SUT | | + | TG1 | | | | + | | (n)<----->(n) | ----------------- | + | | | | +----------+ +-------------------------+ - trafficgen_1 host + trafficgen_0 host SR-IOV 3-Node setup - Correlated Traffic -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++++++++++++++ .. code-block:: console - +--------------------+ - | | - | | - | DUT | - | (VNF) | - | | - +--------------------+ - | VF NIC | | VF NIC | - +--------+ +--------+ - ^ ^ - | | - | | - +----------+ +-------------------------+ +--------------+ - | | | ^ ^ | | | - | | | | | | | | - | | (0)<----->(0) | ------ | | | TG2 | - | TG1 | | SUT | | | (UDP Replay) | - | | | | | | | - | | (n)<----->(n) | ------ | (n)<-->(n) | | - +----------+ +-------------------------+ +--------------+ - trafficgen_1 host trafficgen_2 - -Before executing Yardstick test cases, make sure that pod.yaml reflects the + +--------------------+ + | | + | | + | DUT | + | (VNF) | + | | + +--------------------+ + | VF NIC | | VF NIC | + +--------+ +--------+ + ^ ^ + | | + | | + +----------+ +---------------------+ +--------------+ + | | | ^ ^ | | | + | | | | | | | | + | | (0)<----->(0) |----- | | | TG2 | + | TG1 | | SUT | | | (UDP Replay) | + | | | | | | | + | | (n)<----->(n) | -----| (n)<-->(n) | | + +----------+ +---------------------+ +--------------+ + trafficgen_0 host trafficgen_1 + +Before executing Yardstick test cases, make sure that ``pod.yaml`` reflects the topology and update all the required fields. .. code-block:: console @@ -453,13 +637,13 @@ topology and update all the required fields. .. note:: Update all the required fields like ip, user, password, pcis, etc... SR-IOV Config pod_trex.yaml -^^^^^^^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++++++++ .. code-block:: YAML nodes: - - name: trafficgen_1 + name: trafficgen_0 role: TrafficGen ip: 1.1.1.1 user: root @@ -479,10 +663,10 @@ SR-IOV Config pod_trex.yaml dpdk_port_num: 1 local_ip: "152.16.40.20" netmask: "255.255.255.0" - local_mac: "00:00.00:00:00:02" + local_mac: "00:00:00:00:00:02" SR-IOV Config host_sriov.yaml -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++++++++++ .. code-block:: YAML @@ -497,8 +681,8 @@ SR-IOV Config host_sriov.yaml SR-IOV testcase update: ``<yardstick>/samples/vnf_samples/nsut/vfw/tc_sriov_rfc2544_ipv4_1rule_1flow_64B_trex.yaml`` -Update "contexts" section -""""""""""""""""""""""""" +Update contexts section +''''''''''''''''''''''' .. code-block:: YAML @@ -520,7 +704,7 @@ Update "contexts" section user: "" # update VM username password: "" # update password servers: - vnf: + vnf_0: network_ports: mgmt: cidr: '1.1.1.61/24' # Update VM IP address, if static, <ip>/<mask> or if dynamic, <start of ip>/<mask> @@ -541,55 +725,176 @@ Update "contexts" section gateway_ip: '152.16.100.20' +SRIOV configuration options ++++++++++++++++++++++++++++ + +The only configuration option available for SRIOV is *vpci*. It is used as base +address for VFs that are created during SRIOV test case execution. + + .. code-block:: yaml+jinja + + networks: + uplink_0: + phy_port: "0000:05:00.0" + vpci: "0000:00:07.0" + cidr: '152.16.100.10/24' + gateway_ip: '152.16.100.20' + downlink_0: + phy_port: "0000:05:00.1" + vpci: "0000:00:08.0" + cidr: '152.16.40.10/24' + gateway_ip: '152.16.100.20' + +.. _`VM image properties label`: + +VM image properties +''''''''''''''''''' + +VM image properties example under *flavor* section: + + .. code-block:: console + + flavor: + images: <path> + ram: 8192 + extra_specs: + machine_type: 'pc-i440fx-xenial' + hw:cpu_sockets: 1 + hw:cpu_cores: 6 + hw:cpu_threads: 2 + hw_socket: 0 + cputune: | + <cputune> + <vcpupin vcpu="0" cpuset="7"/> + <vcpupin vcpu="1" cpuset="8"/> + ... + <vcpupin vcpu="11" cpuset="18"/> + <emulatorpin cpuset="11"/> + </cputune> + user: "" + password: "" + +VM image properties description: + + +-------------------------+-------------------------------------------------+ + | Parameters | Detail | + +=========================+=================================================+ + | images || Path to the VM image generated by | + | | ``nsb_setup.sh`` | + | || Default path is ``/var/lib/libvirt/images/`` | + | || Default file name ``yardstick-nsb-image.img`` | + | | or ``yardstick-image.img`` | + +-------------------------+-------------------------------------------------+ + | ram || Amount of RAM to be used for VM | + | || Default is 4096 MB | + +-------------------------+-------------------------------------------------+ + | hw:cpu_sockets || Number of sockets provided to the guest VM | + | || Default is 1 | + +-------------------------+-------------------------------------------------+ + | hw:cpu_cores || Number of cores provided to the guest VM | + | || Default is 2 | + +-------------------------+-------------------------------------------------+ + | hw:cpu_threads || Number of threads provided to the guest VM | + | || Default is 2 | + +-------------------------+-------------------------------------------------+ + | hw_socket || Generate vcpu cpuset from given HW socket | + | || Default is 0 | + +-------------------------+-------------------------------------------------+ + | cputune || Maps virtual cpu with logical cpu | + +-------------------------+-------------------------------------------------+ + | machine_type || Machine type to be emulated in VM | + | || Default is 'pc-i440fx-xenial' | + +-------------------------+-------------------------------------------------+ + | user || User name to access the VM | + | || Default value is 'root' | + +-------------------------+-------------------------------------------------+ + | password || Password to access the VM | + +-------------------------+-------------------------------------------------+ + OVS-DPDK --------- +^^^^^^^^ OVS-DPDK Pre-requisites -^^^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++++ + +On Host, where VM is created: + 1. Create and configure a bridge named ``br-int`` for VM to connect to + external network. Currently this can be done using VXLAN tunnel. -On Host: - a) Create a bridge for VM to connect to external network + Execute the following on host, where VM is created: .. code-block:: console + ip link add type vxlan remote <Jumphost IP> local <DUT IP> id <ID: 10> dstport 4789 brctl addbr br-int - brctl addif br-int <interface_name> #This interface is connected to internet + brctl addif br-int vxlan0 + ip link set dev vxlan0 up + ip addr add <IP#1, like: 172.20.2.1/24> dev br-int + ip link set dev br-int up + + .. note:: May be needed to add extra rules to iptable to forward traffic. - b) Build guest image for VNF to run. + .. code-block:: console + + iptables -A FORWARD -i br-int -s <network ip address>/<netmask> -j ACCEPT + iptables -A FORWARD -o br-int -d <network ip address>/<netmask> -j ACCEPT + + Execute the following on a jump host: + + .. code-block:: console + + ip link add type vxlan remote <DUT IP> local <Jumphost IP> id <ID: 10> dstport 4789 + ip addr add <IP#2, like: 172.20.2.2/24> dev vxlan0 + ip link set dev vxlan0 up + + .. note:: Host and jump host are different baremetal servers. + + 2. Modify test case management CIDR. + IP addresses IP#1, IP#2 and CIDR must be in the same network. + + .. code-block:: YAML + + servers: + vnf_0: + network_ports: + mgmt: + cidr: '1.1.1.7/24' + + 3. Build guest image for VNF to run. Most of the sample test cases in Yardstick are using a guest image called - ``yardstick-image`` which deviates from an Ubuntu Cloud Server image - Yardstick has a tool for building this custom image with samplevnf. + ``yardstick-nsb-image`` which deviates from an Ubuntu Cloud Server image + Yardstick has a tool for building this custom image with SampleVNF. It is necessary to have ``sudo`` rights to use this tool. - Also you may need to install several additional packages to use this tool, by - following the commands below:: + You may need to install several additional packages to use this tool, by + following the commands below:: - sudo apt-get update && sudo apt-get install -y qemu-utils kpartx + sudo apt-get update && sudo apt-get install -y qemu-utils kpartx - This image can be built using the following command in the directory where Yardstick is installed:: + This image can be built using the following command in the directory where + Yardstick is installed:: - export YARD_IMG_ARCH='amd64' - sudo echo "Defaults env_keep += \'YARD_IMG_ARCH\'" >> /etc/sudoers - sudo tools/yardstick-img-dpdk-modify tools/ubuntu-server-cloudimg-samplevnf-modify.sh + export YARD_IMG_ARCH='amd64' + sudo echo "Defaults env_keep += \'YARD_IMG_ARCH\'" >> /etc/sudoers + sudo tools/yardstick-img-dpdk-modify tools/ubuntu-server-cloudimg-samplevnf-modify.sh - for more details refer to chapter :doc:`04-installation` + for more details refer to chapter :doc:`04-installation` - .. note:: VM should be build with static IP and should be accessible from yardstick host. + .. note:: VM should be build with static IP and should be accessible from + yardstick host. - c) OVS & DPDK version. - - OVS 2.7 and DPDK 16.11.1 above version is supported +4. OVS & DPDK version: - d) Setup OVS/DPDK on host. - Please refer to below link on how to setup `OVS-DPDK <http://docs.openvswitch.org/en/latest/intro/install/dpdk/>`_ + * OVS 2.7 and DPDK 16.11.1 above version is supported +Refer setup instructions at `OVS-DPDK`_ on host. OVS-DPDK Config pod.yaml describing Topology -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++++++++++++++++++ OVS-DPDK 2-Node setup -^^^^^^^^^^^^^^^^^^^^^ - ++++++++++++++++++++++ .. code-block:: console @@ -615,11 +920,11 @@ OVS-DPDK 2-Node setup | | | (ovs-dpdk) | | | | (n)<----->(n) |------------------ | +----------+ +-------------------------+ - trafficgen_1 host + trafficgen_0 host OVS-DPDK 3-Node setup - Correlated Traffic -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++++++++++++++++ .. code-block:: console @@ -645,13 +950,11 @@ OVS-DPDK 3-Node setup - Correlated Traffic | | | (ovs-dpdk) | | | | | | (n)<----->(n) | ------ |(n)<-->(n)| | +----------+ +-------------------------+ +------------+ - trafficgen_1 host trafficgen_2 + trafficgen_0 host trafficgen_1 -Before executing Yardstick test cases, make sure that pod.yaml reflects the -topology and update all the required fields. - -.. code-block:: console +Before executing Yardstick test cases, make sure that the ``pod.yaml`` reflects +the topology and update all the required fields:: cp <yardstick>/etc/yardstick/nodes/standalone/trex_bm.yaml.sample /etc/yardstick/nodes/standalone/pod_trex.yaml cp <yardstick>/etc/yardstick/nodes/standalone/host_ovs.yaml /etc/yardstick/nodes/standalone/host_ovs.yaml @@ -659,13 +962,13 @@ topology and update all the required fields. .. note:: Update all the required fields like ip, user, password, pcis, etc... OVS-DPDK Config pod_trex.yaml -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++++++++++ .. code-block:: YAML nodes: - - name: trafficgen_1 + name: trafficgen_0 role: TrafficGen ip: 1.1.1.1 user: root @@ -684,10 +987,10 @@ OVS-DPDK Config pod_trex.yaml dpdk_port_num: 1 local_ip: "152.16.40.20" netmask: "255.255.255.0" - local_mac: "00:00.00:00:00:02" + local_mac: "00:00:00:00:00:02" OVS-DPDK Config host_ovs.yaml -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++++++++++ .. code-block:: YAML @@ -702,8 +1005,8 @@ OVS-DPDK Config host_ovs.yaml ovs_dpdk testcase update: ``<yardstick>/samples/vnf_samples/nsut/vfw/tc_ovs_rfc2544_ipv4_1rule_1flow_64B_trex.yaml`` -Update "contexts" section -""""""""""""""""""""""""" +Update contexts section +''''''''''''''''''''''' .. code-block:: YAML @@ -736,7 +1039,7 @@ Update "contexts" section user: "" # update VM username password: "" # update password servers: - vnf: + vnf_0: network_ports: mgmt: cidr: '1.1.1.61/24' # Update VM IP address, if static, <ip>/<mask> or if dynamic, <start of ip>/<mask> @@ -756,17 +1059,103 @@ Update "contexts" section cidr: '152.16.40.10/24' gateway_ip: '152.16.100.20' +OVS-DPDK configuration options +++++++++++++++++++++++++++++++ + +There are number of configuration options available for OVS-DPDK context in +test case. Mostly they are used for performance tuning. + +OVS-DPDK properties: +'''''''''''''''''''' + +OVS-DPDK properties example under *ovs_properties* section: + + .. code-block:: console -Network Service Benchmarking - OpenStack with SR-IOV support -============================================================ + ovs_properties: + version: + ovs: 2.8.1 + dpdk: 17.05.2 + pmd_threads: 4 + pmd_cpu_mask: "0x3c" + ram: + socket_0: 2048 + socket_1: 2048 + queues: 2 + vpath: "/usr/local" + max_idle: 30000 + lcore_mask: 0x02 + dpdk_pmd-rxq-affinity: + 0: "0:2,1:2" + 1: "0:2,1:2" + 2: "0:3,1:3" + 3: "0:3,1:3" + vhost_pmd-rxq-affinity: + 0: "0:3,1:3" + 1: "0:3,1:3" + 2: "0:4,1:4" + 3: "0:4,1:4" + +OVS-DPDK properties description: + + +-------------------------+-------------------------------------------------+ + | Parameters | Detail | + +=========================+=================================================+ + | version || Version of OVS and DPDK to be installed | + | || There is a relation between OVS and DPDK | + | | version which can be found at | + | | `OVS-DPDK-versions`_ | + | || By default OVS: 2.6.0, DPDK: 16.07.2 | + +-------------------------+-------------------------------------------------+ + | lcore_mask || Core bitmask used during DPDK initialization | + | | where the non-datapath OVS-DPDK threads such | + | | as handler and revalidator threads run | + +-------------------------+-------------------------------------------------+ + | pmd_cpu_mask || Core bitmask that sets which cores are used by | + | || OVS-DPDK for datapath packet processing | + +-------------------------+-------------------------------------------------+ + | pmd_threads || Number of PMD threads used by OVS-DPDK for | + | | datapath | + | || This core mask is evaluated in Yardstick | + | || It will be used if pmd_cpu_mask is not given | + | || Default is 2 | + +-------------------------+-------------------------------------------------+ + | ram || Amount of RAM to be used for each socket, MB | + | || Default is 2048 MB | + +-------------------------+-------------------------------------------------+ + | queues || Number of RX queues used for DPDK physical | + | | interface | + +-------------------------+-------------------------------------------------+ + | dpdk_pmd-rxq-affinity || RX queue assignment to PMD threads for DPDK | + | || e.g.: <port number> : <queue-id>:<core-id> | + +-------------------------+-------------------------------------------------+ + | vhost_pmd-rxq-affinity || RX queue assignment to PMD threads for vhost | + | || e.g.: <port number> : <queue-id>:<core-id> | + +-------------------------+-------------------------------------------------+ + | vpath || User path for openvswitch files | + | || Default is ``/usr/local`` | + +-------------------------+-------------------------------------------------+ + | max_idle || The maximum time that idle flows will remain | + | | cached in the datapath, ms | + +-------------------------+-------------------------------------------------+ + + +VM image properties +''''''''''''''''''' + +VM image properties are same as for SRIOV :ref:`VM image properties label`. + + +OpenStack with SR-IOV support +----------------------------- This section describes how to run a Sample VNF test case, using Heat context, with SR-IOV. It also covers how to install OpenStack in Ubuntu 16.04, using DevStack, with SR-IOV support. -Single node OpenStack setup with external TG --------------------------------------------- +Single node OpenStack with external TG +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. code-block:: console @@ -793,32 +1182,28 @@ Single node OpenStack setup with external TG | | (PF1)<----->(PF1) +--------------------+ | | | | | +----------+ +----------------------------+ - trafficgen_1 host + trafficgen_0 host Host pre-configuration -^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++ -.. warning:: The following configuration requires sudo access to the system. Make - sure that your user have the access. +.. warning:: The following configuration requires sudo access to the system. + Make sure that your user have the access. -Enable the Intel VT-d or AMD-Vi extension in the BIOS. Some system manufacturers -disable this extension by default. +Enable the Intel VT-d or AMD-Vi extension in the BIOS. Some system +manufacturers disable this extension by default. Activate the Intel VT-d or AMD-Vi extension in the kernel by modifying the GRUB config file ``/etc/default/grub``. -For the Intel platform: - -.. code:: bash +For the Intel platform:: ... GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on" ... -For the AMD platform: - -.. code:: bash +For the AMD platform:: ... GRUB_CMDLINE_LINUX_DEFAULT="amd_iommu=on" @@ -833,9 +1218,7 @@ Update the grub configuration file and restart the system: sudo update-grub sudo reboot -Make sure the extension has been enabled: - -.. code:: bash +Make sure the extension has been enabled:: sudo journalctl -b 0 | grep -e IOMMU -e DMAR @@ -848,11 +1231,13 @@ Make sure the extension has been enabled: Feb 06 14:50:14 hostname kernel: DMAR: dmar1: reg_base_addr e0ffc000 ver 1:0 cap 8d2078c106f0466 ecap f020de Feb 06 14:50:14 hostname kernel: DMAR: DRHD base: 0x000000ee7fc000 flags: 0x0 +.. TODO: Refer to the yardstick installation guide for proxy set up + Setup system proxy (if needed). Add the following configuration into the ``/etc/environment`` file: .. note:: The proxy server name/port and IPs should be changed according to - actuall/current proxy configuration in the lab. + actual/current proxy configuration in the lab. .. code:: bash @@ -870,17 +1255,15 @@ Upgrade the system: sudo -EH apt-get upgrade sudo -EH apt-get dist-upgrade -Install dependencies needed for the DevStack +Install dependencies needed for DevStack .. code:: bash - sudo -EH apt-get install python - sudo -EH apt-get install python-dev - sudo -EH apt-get install python-pip + sudo -EH apt-get install python python-dev python-pip Setup SR-IOV ports on the host: -.. note:: The ``enp24s0f0``, ``enp24s0f0`` are physical function (PF) interfaces +.. note:: The ``enp24s0f0``, ``enp24s0f1`` are physical function (PF) interfaces on a host and ``enp24s0f3`` is a public interface used in OpenStack, so the interface names should be changed according to the HW environment used for testing. @@ -897,12 +1280,12 @@ Setup SR-IOV ports on the host: DevStack installation -^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++ -Use official `Devstack <https://docs.openstack.org/devstack/pike/>`_ -documentation to install OpenStack on a host. Please note, that stable -``pike`` branch of devstack repo should be used during the installation. -The required `local.conf`` configuration file are described below. +If you want to try out NSB, but don't have OpenStack set-up, you can use +`Devstack`_ to install OpenStack on a host. Please note, that the +``stable/pike`` branch of devstack repo should be used during the installation. +The required ``local.conf`` configuration file is described below. DevStack configuration file: @@ -913,28 +1296,26 @@ DevStack configuration file: commands to get device and vendor id of the virtual function (VF). .. literalinclude:: code/single-devstack-local.conf - :language: console + :language: ini Start the devstack installation on a host. - TG host configuration -^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++ -Yardstick automatically install and configure Trex traffic generator on TG +Yardstick automatically installs and configures Trex traffic generator on TG host based on provided POD file (see below). Anyway, it's recommended to check -the compatibility of the installed NIC on the TG server with software Trex using -the manual at https://trex-tgn.cisco.com/trex/doc/trex_manual.html. - +the compatibility of the installed NIC on the TG server with software Trex +using the `manual <https://trex-tgn.cisco.com/trex/doc/trex_manual.html>`_. Run the Sample VNF test case -^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++ There is an example of Sample VNF test case ready to be executed in an OpenStack environment with SR-IOV support: ``samples/vnf_samples/nsut/vfw/ -tc_heat_sriov_external_rfc2544_ipv4_1rule_1flow_64B_trex.yaml``. +tc_heat_sriov_external_rfc2544_ipv4_1rule_1flow_trex.yaml``. -Install yardstick using `Install Yardstick (NSB Testing)`_ steps for OpenStack +Install Yardstick using `Install Yardstick (NSB Testing)`_ steps for OpenStack context. Create pod file for TG in the yardstick repo folder located in the yardstick @@ -945,7 +1326,7 @@ container: command to get the PF PCI address for ``vpci`` field. .. literalinclude:: code/single-yardstick-pod.conf - :language: console + :language: ini Run the Sample vFW RFC2544 SR-IOV TC (``samples/vnf_samples/nsut/vfw/ tc_heat_sriov_external_rfc2544_ipv4_1rule_1flow_64B_trex.yaml``) in the heat @@ -953,7 +1334,7 @@ context using steps described in `NS testing - using yardstick CLI`_ section. Multi node OpenStack TG and VNF setup (two nodes) -------------------------------------------------- +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. code-block:: console @@ -964,7 +1345,7 @@ Multi node OpenStack TG and VNF setup (two nodes) | |sample-VNF VM | | | |sample-VNF VM | | | | | | | | | | | | TG | | | | DUT | | - | | trafficgen_1 | | | | (VNF) | | + | | trafficgen_0 | | | | (VNF) | | | | | | | | | | | +--------+ +--------+ | | +--------+ +--------+ | | | VF NIC | | VF NIC | | | | VF NIC | | VF NIC | | @@ -984,19 +1365,17 @@ Multi node OpenStack TG and VNF setup (two nodes) Controller/Compute pre-configuration -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++++++++++++++++ Pre-configuration of the controller and compute hosts are the same as -described in `Host pre-configuration`_ section. Follow the steps in the section. - +described in `Host pre-configuration`_ section. DevStack configuration -^^^^^^^^^^^^^^^^^^^^^^ +++++++++++++++++++++++ -Use official `Devstack <https://docs.openstack.org/devstack/pike/>`_ -documentation to install OpenStack on a host. Please note, that stable -``pike`` branch of devstack repo should be used during the installation. -The required `local.conf`` configuration file are described below. +A reference ``local.conf`` for deploying OpenStack in a multi-host environment +using `Devstack`_ is shown in this section. The ``stable/pike`` branch of +devstack repo should be used during the installation. .. note:: Update the devstack configuration files by replacing angluar brackets with a short description inside. @@ -1007,26 +1386,26 @@ The required `local.conf`` configuration file are described below. DevStack configuration file for controller host: .. literalinclude:: code/multi-devstack-controller-local.conf - :language: console + :language: ini DevStack configuration file for compute host: .. literalinclude:: code/multi-devstack-compute-local.conf - :language: console + :language: ini Start the devstack installation on the controller and compute hosts. - Run the sample vFW TC -^^^^^^^^^^^^^^^^^^^^^ ++++++++++++++++++++++ -Install yardstick using `Install Yardstick (NSB Testing)`_ steps for OpenStack +Install Yardstick using `Install Yardstick (NSB Testing)`_ steps for OpenStack context. -Run sample vFW RFC2544 SR-IOV TC (``samples/vnf_samples/nsut/vfw/ -tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml``) in the heat -context using steps described in `NS testing - using yardstick CLI`_ section -and the following yardtick command line arguments: +Run the sample vFW RFC2544 SR-IOV test case +(``samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml``) +in the heat context using steps described in +`NS testing - using yardstick CLI`_ section and the following Yardstick command +line arguments: .. code:: bash @@ -1034,8 +1413,8 @@ and the following yardtick command line arguments: samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex.yaml -Enabling other Traffic generator -================================ +Enabling other Traffic generators +--------------------------------- IxLoad ^^^^^^ @@ -1054,14 +1433,16 @@ IxLoad .. code-block:: console - cp <repo>/etc/yardstick/nodes/pod.yaml.nsb.sample.ixia etc/yardstick/nodes/pod_ixia.yaml + cp <repo>/etc/yardstick/nodes/pod.yaml.nsb.sample.ixia \ + etc/yardstick/nodes/pod_ixia.yaml Config ``pod_ixia.yaml`` .. literalinclude:: code/pod_ixia.yaml - :language: console + :language: yaml - for sriov/ovs_dpdk pod files, please refer to above Standalone Virtualization for ovs-dpdk/sriov configuration + for sriov/ovs_dpdk pod files, please refer to `Standalone Virtualization`_ + for ovs-dpdk/sriov configuration 3. Start IxOS TCL Server (Install 'Ixia IxExplorer IxOS <version>') You will also need to configure the IxLoad machine to start the IXIA @@ -1071,7 +1452,7 @@ IxLoad * Go to: ``Start->Programs->Ixia->IxOS->IxOS 8.01-GA-Patch1->Ixia Tcl Server IxOS 8.01-GA-Patch1`` or - ``"C:\Program Files (x86)\Ixia\IxOS\8.01-GA-Patch1\ixTclServer.exe"`` + ``C:\Program Files (x86)\Ixia\IxOS\8.01-GA-Patch1\ixTclServer.exe`` 4. Create a folder ``Results`` in c:\ and share the folder on the network. @@ -1079,7 +1460,7 @@ IxLoad ``<repo>/samples/vnf_samples/nsut/vfw/tc_baremetal_http_ixload_1b_Requests-65000_Concurrency.yaml`` IxNetwork ---------- +^^^^^^^^^ IxNetwork testcases use IxNetwork API Python Bindings module, which is installed as part of the requirements of the project. @@ -1088,14 +1469,16 @@ installed as part of the requirements of the project. .. code-block:: console - cp <repo>/etc/yardstick/nodes/pod.yaml.nsb.sample.ixia etc/yardstick/nodes/pod_ixia.yaml + cp <repo>/etc/yardstick/nodes/pod.yaml.nsb.sample.ixia \ + etc/yardstick/nodes/pod_ixia.yaml - Config pod_ixia.yaml + Configure ``pod_ixia.yaml`` .. literalinclude:: code/pod_ixia.yaml - :language: console + :language: yaml - for sriov/ovs_dpdk pod files, please refer to above Standalone Virtualization for ovs-dpdk/sriov configuration + for sriov/ovs_dpdk pod files, please refer to above + `Standalone Virtualization`_ for ovs-dpdk/sriov configuration 2. Start IxNetwork TCL Server You will also need to configure the IxNetwork machine to start the IXIA @@ -1108,3 +1491,52 @@ installed as part of the requirements of the project. 3. Execute testcase in samplevnf folder e.g. ``<repo>/samples/vnf_samples/nsut/vfw/tc_baremetal_rfc2544_ipv4_1rule_1flow_64B_ixia.yaml`` + +Spirent Landslide +----------------- + +In order to use Spirent Landslide for vEPC testcases, some dependencies have +to be preinstalled and properly configured. + +- Java + + 32-bit Java installation is required for the Spirent Landslide TCL API. + + | ``$ sudo apt-get install openjdk-8-jdk:i386`` + + .. important:: + Make sure ``LD_LIBRARY_PATH`` is pointing to 32-bit JRE. For more details + check `Linux Troubleshooting <http://TAS_HOST_IP/tclapiinstall.html#trouble>` + section of installation instructions. + +- LsApi (Tcl API module) + + Follow Landslide documentation for detailed instructions on Linux + installation of Tcl API and its dependencies + ``http://TAS_HOST_IP/tclapiinstall.html``. + For working with LsApi Python wrapper only steps 1-5 are required. + + .. note:: After installation make sure your API home path is included in + ``PYTHONPATH`` environment variable. + + .. important:: + The current version of LsApi module has an issue with reading LD_LIBRARY_PATH. + For LsApi module to initialize correctly following lines (184-186) in + lsapi.py + + .. code-block:: python + + ldpath = os.environ.get('LD_LIBRARY_PATH', '') + if ldpath == '': + environ['LD_LIBRARY_PATH'] = environ['LD_LIBRARY_PATH'] + ':' + ldpath + + should be changed to: + + .. code-block:: python + + ldpath = os.environ.get('LD_LIBRARY_PATH', '') + if not ldpath == '': + environ['LD_LIBRARY_PATH'] = environ['LD_LIBRARY_PATH'] + ':' + ldpath + +.. note:: The Spirent landslide TCL software package needs to be updated in case + the user upgrades to a new version of Spirent landslide software. |