Re: [ovirt-users] How to setup OVS using python SDK ?

20 Dec 2016

      On 12/20/2016 02:19 PM, TranceWorldLogic . wrote:
...
Hi,
I am trying to setup OVS network using ovirt and found guide as shown below:
https://www.ovirt.org/networking/ovs/
Then, I tried to explore "vNic Profile" in sdk but not found any ovs
profile in types.py.
Can anyone help me how to setup ovs using python sdk ?
I am using ovirtsdk4 (4.0 version).
Should be something like this:

---8<---
#!/usr/bin/env python
# -*- coding: utf-8 -*-

#
# Copyright (c) 2016 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

import logging

import ovirtsdk4 as sdk
import ovirtsdk4.types as types

logging.basicConfig(level=logging.DEBUG, filename='example.log')

# This example will connect to the server and create a logical network
# that using Open vSwitch. Note that in order for this to work the
# engine has to be configured to use Open vSwitch, as described here:
#
#   https://www.ovirt.org/networking/ovs
#
# Specifcally you need to run the following commands in the machine
# where the engine is running:
#
#   engine-config -s CustomDeviceProperties="{type=interface;prop={ovs=.*}}"
#   engine-config -s
'UserDefinedNetworkCustomProperties=ovs=.*;ovs_aa_sid=.*'
#   systemctl restart ovirt-engine

# Create the connection to the server:
connection = sdk.Connection(
    url='https://engine41.example.com/ovirt-engine/api',
    username='admin@internal',
    password='redhat123',
    ca_file='ca.pem',
    debug=True,
    log=logging.getLogger(),
)

# Get the reference to the root of the tree of services:
system_service = connection.system_service()

# Get the reference to the service that manages the logical networks:
nets_service = system_service.networks_service()

# Create a logical network, which will automatically create a virtual
# NIC profile:
net = nets_service.add(
    network=types.Network(
        name='myovsnetwork',
        data_center=types.DataCenter(
            name='mydc'
        )
    )
)

# Retrieve the details of the virtual NIC profile that was created for
# the network (assuming that there is only one):
profile = connection.follow_link(net.vnic_profiles)[0]

# Get the reference to the service that manages the virtual NIC profile:
profiles_service = system_service.vnic_profiles_service()
profile_service = profiles_service.profile_service(profile.id)

# Update the custom properties of the virtual NIC profile in order to
# enable Open vSwitch:
profile_service.update(
    profile=types.VnicProfile(
        custom_properties=[
            types.CustomProperty(
                name='ovs',
                value='true'
            )
        ]
    )
)

# Close the connection to the server:
connection.close()
--->8---

Note that it isn't complete, and that I didn't test if the OVS network
does work. But at least the creation of the network and the modification
of the VNIC profile does work.

I am suggesting to add this to the collection of examples of the SDK:

  Add example of how to create OVS network
  https://gerrit.ovirt.org/68825

You may want to review it.

Re: [ovirt-users] How to setup OVS using python SDK ?

Juan Hernández