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

[TranceWorldLogic .]

Hi,

I found a way to update property in setup network as shown below

# Get the reference to the hosts service:
hosts_service = connection.system_service().hosts_service()
myhost = hosts_service.list(search='name=myhost')[0]

myhost_service = hosts_service.host_service(myhost.id)
mynet_attached_services = myhost_service.network_attachments_service()

for mynet_attachment in mynet_attached_services.list():
    if mynet_attachment.network.name == "mynet":
        print "Found : %s"%(mynet_attachment.network.name)
        mynet_attached_services.attachment_service(mynet_attachment.id).update(
attachment=types.NetworkAttachment( properties=[types.Property("ovs","1")]
) )
    else:
        print "Not Found : %s"%(mynet_attachment.network.name)

Please find below ovs output.
# ovs-vsctl show
    Bridge "vdsmbr_tJ9jxY5o"
        Port "em2"
            Interface "em2"
        Port "vdsmbr_tJ9jxY5o"
            Interface "vdsmbr_tJ9jxY5o"
                type: internal
        Port mynet
            Interface mynet
                type: internal
    ovs_version: "2.4.0"


But ovirt is showing me "out-of-sync" message.

*Can someone explain me why it shown as out-of-sync ?*
*How ovirt determine sync on logical network ?*


Thanks,
~Rohit



On Mon, Dec 26, 2016 at 7:04 PM, TranceWorldLogic . <
tranceworldlogic at gmail.com> wrote:

> Hi,
>
> Thanks for providing script it is working fine.
>
> But it not complete, would you help me to complete step 2 ?
>
> https://www.ovirt.org/networking/ovs/
> Setup network
>
> In the oVirt UI open the 'Setup Host Networks' dialog. Proceed to editing
> a desired logical network's properties. Among them you will find 'ovs', set
> it to 'true' or '1' to mark is as a OVS Network.
>
>
> And have one doubt.
>
> Why we have to set ovs property two time ?
>
>
> Thanks,
> ~Rohit
>
>
> On Tue, Dec 20, 2016 at 7:44 PM, Juan Hernández <jhernand at redhat.com>
> wrote:
>
>> 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 at 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.
>>
>>
>
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