[charms] Enabling Neutron DVR & ovs

30 Mar 2019

      Hi guys,

I have been experimenting with the enable-dvr option in neutron-api. I cannot find a clear guide on how to configure this.
However I have ran into some issues trying to figure out the configuration to enable dvr.

This is where juju stops:
unit-neutron-openvswitch-1: 11:45:35 INFO unit.neutron-openvswitch/1.juju-log Creating bridge br-int
unit-neutron-openvswitch-1: 11:45:35 INFO unit.neutron-openvswitch/1.juju-log Creating bridge br-ex
unit-neutron-openvswitch-1: 11:45:36 DEBUG unit.neutron-openvswitch/1.juju-log Replacing iface 'eno1' with bond master 'os'
unit-neutron-openvswitch-1: 11:45:36 DEBUG unit.neutron-openvswitch/1.juju-log Replacing iface 'eno2' with bond master 'os'
unit-neutron-openvswitch-1: 11:45:36 DEBUG unit.neutron-openvswitch/1.juju-log Replacing iface 'eno3' with bond master 'stor'
unit-neutron-openvswitch-1: 11:45:36 DEBUG unit.neutron-openvswitch/1.juju-log Replacing iface 'eno4' with bond master 'stor'
unit-neutron-openvswitch-1: 11:45:37 INFO unit.neutron-openvswitch/1.juju-log Creating bridge br-data
unit-neutron-openvswitch-1: 11:45:37 DEBUG unit.neutron-openvswitch/1.juju-log Interface os.392 is not a Linux bridge
unit-neutron-openvswitch-1: 11:45:37 INFO unit.neutron-openvswitch/1.juju-log Adding port os.392 to bridge br-data
unit-neutron-openvswitch-1: 11:45:37 DEBUG unit.neutron-openvswitch/1.config-changed Failed to restart os-charm-phy-nic-mtu.service: Unit os-charm-phy-nic-mtu.service not found.

Does this mean i need to have a relation to my Neutron-gateway charm aswell? I found a reference to that service in the code for charm-neutron-gateway.

Here is a simplified juju bundle configuration of my setup:
  neutron-openvswitch:
    annotations:
      gui-x: '250'
      gui-y: '500'
    charm: cs:neutron-openvswitch-255
    num_units: 0
    options:
      data-port: br-data:os.392
      bridge-mappings: physnet1:br-data
      firewall-driver: openvswitch
      instance-mtu: 1458
      security-group-log-output-base: "/var/log/openvswitch/security.log"
      security-group-log-burst-limit: 25
    bindings:
      data: os-private

  neutron-gateway:
    annotations:
      gui-x: '0'
      gui-y: '0'
    charm: cs:neutron-gateway-256
    num_units: 1
    options:
      openstack-origin: cloud:bionic-rocky
      worker-multiplier: 0.25
      ### Network configuration ###
      flat-network-providers: physnet1
      data-port: br-data:os.392
      bridge-mappings: physnet1:br-data
      plugin: ovs
      enable-l3-agent: true
      enable-metadata-network: true
      enable-isolated-metadata: false
      run-internal-router: all
      instance-mtu: 1458
      use-syslog: true
      verbose: true
    extra-bindings:
      data: os-private
    to:
    - '0'

  neutron-api:
    annotations:
      gui-x: '500'
      gui-y: '500'
    charm: cs:neutron-api-269
    num_units: 1
    options:
      openstack-origin: cloud:bionic-rocky
      worker-multiplier: 0.25
      use-internal-endpoints: true
      global-physnet-mtu: 1500
      flat-network-providers: physnet1
      dhcp-agents-per-network: 2
      neutron-security-groups: true
      enable-security-group-logging: true
      overlay-network-type: "gre"
      default-tenant-network-type: "gre"
      neutron-external-network: ext_net
      enable-dvr: true
    bindings:
      public: os-private
      admin: os-private
      internal: os-private
      shared-db: os-private
    to:
    - lxd:0

Any help appreciated :)

--
Emil Larsson