os-net-config 12.5.0

OpenStack network configuration

Team and repository tags

os-net-config

host network configuration tool

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

• Free software: Apache License (2.0)

• Source: https://opendev.org/openstack/os-net-config

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

Release Notes

• https://docs.openstack.org/releasenotes/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.