2d9c516c49
The linux bridge network code for creating bridges never actually told the iptables manager to apply the rules it just set. Previously when this code lived inside Nova it just happened to work, because there was a single iptables manager instance in nova and other unrelated code would fortunately apply iptables rules. Now we're standalone we must explicitly apply them Change-Id: I26e27c1c4b337d0a51efbe37ca671b4f23cf38db |
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doc/source | ||
os_vif | ||
vif_plug_linux_bridge | ||
vif_plug_ovs | ||
.coveragerc | ||
.gitignore | ||
.gitreview | ||
.mailmap | ||
.testr.conf | ||
CONTRIBUTING.rst | ||
HACKING.rst | ||
LICENSE | ||
MANIFEST.in | ||
README.rst | ||
babel.cfg | ||
openstack-common.conf | ||
requirements.txt | ||
setup.cfg | ||
setup.py | ||
test-requirements.txt | ||
tox.ini |
README.rst
os-vif
A library for plugging and unplugging virtual interfaces in OpenStack.
Features
- A base VIF plugin class that supplies a plug() and unplug() interface
- Versioned objects that represent a virtual interface and its components
Usage
The interface to the os_vif library is very simple. To begin using the library, first call the os_vif.initialize() function. This will load all installed plugins and register the object model:
import os_vif
os_vif.initialize()
Once the os_vif library is initialized, there are only two other library functions: os_vif.plug() and os_vif.unplug(). Both methods accept a single argument of type `os_vif.objects.VIF`:
import uuid
from nova import objects as nova_objects
from os_vif import exception as vif_exc
from os_vif import objects as vif_objects
from os_vif import vnic_types
instance_uuid = 'd7a730ca-3c28-49c3-8f26-4662b909fe8a'
instance = nova_objects.Instance.get_by_uuid(instance_uuid)
instance_info = vif_objects.InstanceInfo(
uuid=instance.uuid,
name=instance.name,
project_id=instance.project_id)
subnet = vif_objects.Subnet(cidr='192.168.1.0/24')
subnets = vif_objects.SubnetList([subnet])
network = vif_objects.Network(label='tenantnet',
subnets=subnets,
multi_host=False,
should_provide_vlan=False,
should_provide_bridge=False)
vif_uuid = uuid.uuid4()
vif = vif_objects.VIFVHostUser(id=vif_uuid,
address=None,
network=network,
plugin='vhostuser',
path='/path/to/socket',
mode=vif_objects.fields.VIFVHostUserMode.SERVER)
# Now do the actual plug operations to connect the VIF to
# the backing network interface.
try:
os_vif.plug(vif)
except vif_exc.PlugException as err:
# Handle the failure...
# If you are removing a virtual machine and its interfaces,
# you would use the unplug() operation:
try:
os_vif.unplug(vif)
except vif_exc.UnplugException as err:
# Handle the failure...