os-nosdn-kvm_nfv_ovs_dpdk-ha Overview and Description

1. os-nosdn-kvm_nfv_ovs_dpdk-ha Description

1.1. Introduction

The purpose of os-nosdn-kvm_ovs_dpdk-ha scenario testing is to test the High Availability deployment and configuration of OPNFV software suite with OpenStack and without SDN software. This OPNFV software suite includes OPNFV KVM4NFV latest software packages for Linux Kernel and QEMU patches for achieving low latency. High Availability feature is achieved by deploying OpenStack multi-node setup with 3 controllers and 2 computes nodes.

KVM4NFV packages will be installed on compute nodes as part of deployment. This scenario testcase deployment is happening on multi-node by using OPNFV Fuel deployer.

1.2. Scenario Components and Composition

This scenario deploys the High Availability OPNFV Cloud based on the configurations provided in ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml. This yaml file contains following configurations and is passed as an argument to deploy.py script

  • scenario.yaml: This configuration file defines translation between a short deployment scenario name(os-nosdn-kvm_ovs_dpdk-ha) and an actual deployment scenario configuration file(ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml)
  • deployment-scenario-metadata: Contains the configuration metadata like title,version,created,comment.
deployment-scenario-metadata:
   title: NFV KVM and OVS-DPDK HA deployment
   version: 0.0.1
   created: Dec 20 2016
   comment: NFV KVM and OVS-DPDK
  • stack-extensions: Stack extentions are opnfv added value features in form of a fuel-plugin.Plugins listed in stack extensions are enabled and configured. os-nosdn-kvm_ovs_dpdk-ha scenario currently uses KVM-1.0.0 plugin.
stack-extensions:
   - module: fuel-plugin-kvm
     module-config-name: fuel-nfvkvm
     module-config-version: 1.0.0
     module-config-override:
       # Module config overrides

  • dea-override-config: Used to configure the HA mode,network segmentation types and role to node assignments.These configurations overrides corresponding keys in the dea_base.yaml and dea_pod_override.yaml. These keys are used to deploy multiple nodes(3 controllers,2 computes) as mention below.

    • Node 1:
      • This node has MongoDB and Controller roles
      • The controller node runs the Identity service, Image Service, management portions of Compute and Networking, Networking plug-in and the dashboard
      • Uses VLAN as an interface
    • Node 2:
      • This node has Ceph-osd and Controller roles
      • The controller node runs the Identity service, Image Service, management portions of Compute and Networking, Networking plug-in and the dashboard
      • Ceph is a massively scalable, open source, distributed storage system
      • Uses VLAN as an interface
    • Node 3:
      • This node has Controller role in order to achieve high availability.
      • Uses VLAN as an interface
    • Node 4:
      • This node has compute and Ceph-osd roles
      • Ceph is a massively scalable, open source, distributed storage system
      • By default, Compute uses KVM as the hypervisor
      • Uses DPDK as an interface
    • Node 5:
      • This node has compute and Ceph-osd roles
      • Ceph is a massively scalable, open source, distributed storage system
      • By default, Compute uses KVM as the hypervisor
      • Uses DPDK as an interface

    The below is the dea-override-config of the ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml file.

dea-override-config:
  fuel:
    FEATURE_GROUPS:
    - experimental
  nodes:
  - id: 1
    interfaces: interfaces_1
    role: controller
  - id: 2
    interfaces: interfaces_1
    role: mongo,controller
  - id: 3
    interfaces: interfaces_1
    role: ceph-osd,controller
  - id: 4
    interfaces: interfaces_dpdk
    role: ceph-osd,compute
    attributes: attributes_1
  - id: 5
    interfaces: interfaces_dpdk
    role: ceph-osd,compute
    attributes: attributes_1

  attributes_1:
    hugepages:
      dpdk:
        value: 1024
      nova:
        value:
          '2048': 1024

  settings:
    editable:
      storage:
        ephemeral_ceph:
          description: Configures Nova to store ephemeral volumes in RBD. This works best if Ceph is enabled for volumes and images, too. Enables live migration of all types of Ceph backed VMs (without this option, live migration will only work with VMs launched from Cinder volumes).
          label: Ceph RBD for ephemeral volumes (Nova)
          type: checkbox
          value: true
          weight: 75
        images_ceph:
          description: Configures Glance to use the Ceph RBD backend to store images. If enabled, this option will prevent Swift from installing.
          label: Ceph RBD for images (Glance)
          restrictions:
          - settings:storage.images_vcenter.value == true: Only one Glance backend could be selected.
          type: checkbox
          value: true
          weight: 30

  • dha-override-config: Provides information about the VM definition and Network config for virtual deployment.These configurations overrides the pod dha definition and points to the controller,compute and fuel definition files.

    The below is the dha-override-config of the ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml file.

dha-override-config:
  nodes:
  - id: 1
    libvirtName: controller1
    libvirtTemplate: templates/virtual_environment/vms/controller.xml
  - id: 2
    libvirtName: controller2
    libvirtTemplate: templates/virtual_environment/vms/controller.xml
  - id: 3
    libvirtName: controller3
    libvirtTemplate: templates/virtual_environment/vms/controller.xml
  - id: 4
    libvirtName: compute1
    libvirtTemplate: templates/virtual_environment/vms/compute.xml
  - id: 5
    libvirtName: compute2
    libvirtTemplate: templates/virtual_environment/vms/compute.xml
  - id: 6
    libvirtName: fuel-master
    libvirtTemplate: templates/virtual_environment/vms/fuel.xml
    isFuel: yes
    username: root
    password: r00tme
  • os-nosdn-kvm_ovs_dpdk-ha scenario is successful when all the 5 Nodes are accessible, up and running.

Note:

  • In os-nosdn-kvm_ovs_dpdk-ha scenario, OVS is installed on the compute nodes with DPDK configured
  • Hugepages for DPDK are configured in the attributes_1 section of the no-ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml
  • Hugepages are only configured for compute nodes
  • This results in faster communication and data transfer among the compute nodes

1.3. Scenario Usage Overview

  • The high availability feature can be acheived by executing deploy.py with ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml as an argument.
  • Install Fuel Master and deploy OPNFV Cloud from scratch on Hardware Environment:

Command to deploy the os-nosdn-kvm_ovs_dpdk-ha scenario:

$ cd ~/fuel/ci/
$ sudo ./deploy.sh -f -b file:///tmp/opnfv-fuel/deploy/config -l devel-pipeline -p default -s ha_nfv-kvm_nfv-ovs-dpdk_heat_ceilometer_scenario.yaml -i file:///tmp/opnfv.iso
where,

-b is used to specify the configuration directory

-i is used to specify the image downloaded from artifacts.

Note:

Check $ sudo ./deploy.sh -h for further information.
  • os-nosdn-kvm_ovs_dpdk-ha scenario can be executed from the jenkins project “fuel-os-nosdn-kvm_ovs_dpdk-ha-baremetal-daily-master”
  • This scenario provides the High Availability feature by deploying 3 controller,2 compute nodes and checking if all the 5 nodes are accessible(IP,up & running).
  • Test Scenario is passed if deployment is successful and all 5 nodes have accessibility (IP , up & running).

1.4. Known Limitations, Issues and Workarounds

  • Test scenario os-nosdn-kvm_ovs_dpdk-ha result is not stable.

1.5. References

For more information on the OPNFV Danube release, please visit http://www.opnfv.org/Danube