Hi Don,

One feasible way to manipulate host networks/nics is using `host_service.setup_networks()` function. You could refer to [1] and [2] for the official directive details. Hopefully it will be useful.


[1]: https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/add_bond.py
[2]: http://ovirt.github.io/ovirt-engine-api-model/4.4/#services/host/methods/setup_networks

On Wed, Jul 3, 2019 at 2:42 AM Don Dupuis <dondster@gmail.com> wrote:
I am having issue with adding network to host nic with python SDK. It works just fine using the portal GUI. I have the following:

bond0 that is setup as mode 4
bond0.120 that is attached to ovirtmgmt network
bond0.96 that I am trying to attach a new installed network called External.

Below is a code snippet of what I am trying to do:

hosts_service = connection.system_service().hosts_service()
    host = hosts_service.list(search='name=%s' % HOSTNAME)[0]
    host_service = hosts_service.host_service(host.id)
    hostnics_service = hosts_service.host_service(host.id).nics_service()
    n = None
    for n in hostnics_service.list():
        if n.name == 'bond0.96':
            n_id = n.id
            print("n is %s" % n_id)
    system_service = connection.system_service()
    networks_service = connection.system_service().networks_service()
    network = networks_service.list(
        search='name=External and datacenter=%s-local' % HOSTNAME) [0]
    print ("Network name is %s" % network.name)
    print ("Network id is %s" % network.id)
    net_attachments_service = host_service.network_attachments_service()
    net_attachment = net_attachments_service.add(

I will end up with an error of 

File "./add_host_py", line 193, in Add_External_network
  File "/usr/lib64/python2.7/site-packages/ovirtsdk4/services.py", line 15441, in add
  File "/usr/lib64/python2.7/site-packages/ovirtsdk4/service.py", line 98, in _check_fault
    Service._raise_error(response, fault)
  File "/usr/lib64/python2.7/site-packages/ovirtsdk4/service.py", line 71, in _raise_error
    raise Error(msg)
ovirtsdk4.Error: Fault reason is "Operation Failed". Fault detail is "[Cannot setup Networks. The attachment of network 'External' references vlan device 'bond0.96'. Network attachment cannot reference vlan device.]". HTTP response code is 400.

Can someone guide me on what I am doing wrong or not understanding with the NetworkAttachment Service?

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