os-net-config 0.2.0

OpenStack network configuration

host network configuration tool

An implementation of the ‘network configuration’ spec @ https://review.openstack.org/#/c/97859/. The intention is for this code to be moved under the tripleo project in due course.

• Free software: Apache license

• Documentation: http://docs.openstack.org/developer/os-net-config

• Source: http://git.openstack.org/cgit/openstack/os-net-config

• Bugs: http://bugs.launchpad.net/os-net-config

Features

The core aim of this project is to allow fine grained (but extendable) configuration of the networking parameters for a network host. The project consists of:

• A CLI (os-net-config) which provides configuration via a YAML or JSON file formats. By default os-net-config uses a YAML config file located at /etc/os-net-config/config.yaml. This can be customized via the –config-file CLI option.

• A python library which provides configuration via an object model.

YAML Config Examples

• Configure an OVS bridge with a single attached interface (port)

network_config:
  -
    type: ovs_bridge
    name: br-ctlplane
    use_dhcp: true
    ovs_extra:
      - br-set-external-id br-ctlplane bridge-id br-ctlplane
    members:
      -
        type: interface
        name: em1

• Configure an OVS bridge on top of an OVS bond

network_config:
  -
     type: ovs_bridge
     name: br-ctlplane
     use_dhcp: true
     members:
       -
         type: ovs_bond
         name: bond1
         members:
           -
             type: interface
             name: em1
           -
             type: interface
             name: em2

• Configure a tagged VLAN interface on top of an OVS bridge

network_config:
  -
    type: ovs_bridge
    name: br-ctlplane
    use_dhcp: true
    members:
      -
        type: interface
        name: em1
      -
        type: vlan
        vlan_id: 16
        addresses:
          -
            ip_netmask: 192.0.2.1/24

Provider Configuration

Providers are use to apply (implement) the desired configuration on the host system. By default 3 providers are implemented:

• Ifcfg: persistent network config format stored in /etc/sysconfig/network-scripts

• ENI: persistent network config format stored in /etc/network/interfaces

• iproute2: non-persistent provider which implements the config using iproute2, vconfig, etc… (implementation in progress)

When using bin/os-net-config the provider is automatically selected based on the host systems perferred persistent network type (ifcfg or ENI). This can be customized via the –provider CLI option.