63659fe4a6
This change generates /etc/sysconf/network-scripts/ifcfg-* for ivs. It also generates /etc/sysconf/ivs configuration file for ivs. It supports only RedHat at this point. Indigo Virtual Switch (IVS, https://github.com/floodlight/ivs) is a virtual switch for Linux. It is compatible with the KVM hypervisor and leveraging the Open vSwitch kernel module for packet forwarding. There are three major differences between IVS and OVS: 1. Each node can have at most one ivs, name is not required. 2. Bond is not allowed to attach to an ivs. It is the SDN controller's job to dynamically form bonds on ivs. 3. IP address can only be statically assigned. Change-Id: I276d736794d123405de793c2a4eb2c1ee55a0fad
182 lines
6.3 KiB
Python
182 lines
6.3 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2015 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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from oslo_concurrency import processutils
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from os_net_config import objects
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from os_net_config import utils
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logger = logging.getLogger(__name__)
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class NotImplemented(Exception):
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pass
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class NetConfig(object):
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"""Common network config methods class."""
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def __init__(self, noop=False, root_dir=''):
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self.noop = noop
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self.log_prefix = "NOOP: " if noop else ""
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self.root_dir = root_dir
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def add_object(self, obj):
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"""Convenience method to add any type of object to the network config.
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See objects.py.
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:param obj: The object to add.
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"""
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if isinstance(obj, objects.Interface):
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self.add_interface(obj)
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elif isinstance(obj, objects.Vlan):
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self.add_vlan(obj)
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elif isinstance(obj, objects.IvsInterface):
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self.add_ivs_interface(obj)
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elif isinstance(obj, objects.OvsBridge):
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self.add_bridge(obj)
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for member in obj.members:
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self.add_object(member)
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elif isinstance(obj, objects.LinuxBridge):
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self.add_linux_bridge(obj)
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for member in obj.members:
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self.add_object(member)
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elif isinstance(obj, objects.IvsBridge):
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self.add_ivs_bridge(obj)
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for member in obj.members:
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self.add_object(member)
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elif isinstance(obj, objects.OvsBond):
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self.add_bond(obj)
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for member in obj.members:
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self.add_object(member)
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elif isinstance(obj, objects.LinuxBond):
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self.add_linux_bond(obj)
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for member in obj.members:
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self.add_object(member)
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def add_interface(self, interface):
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"""Add an Interface object to the net config object.
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:param interface: The Interface object to add.
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"""
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raise NotImplemented("add_interface is not implemented.")
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def add_vlan(self, vlan):
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"""Add a Vlan object to the net config object.
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:param vlan: The vlan object to add.
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"""
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raise NotImplemented("add_vlan is not implemented.")
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def add_bridge(self, bridge):
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"""Add an OvsBridge object to the net config object.
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:param bridge: The OvsBridge object to add.
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"""
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raise NotImplemented("add_bridge is not implemented.")
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def add_linux_bridge(self, bridge):
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"""Add a LinuxBridge object to the net config object.
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:param bridge: The LinuxBridge object to add.
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"""
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raise NotImplemented("add_linux_bridge is not implemented.")
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def add_ivs_bridge(self, bridge):
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"""Add a IvsBridge object to the net config object.
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:param bridge: The IvsBridge object to add.
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"""
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raise NotImplemented("add_ivs_bridge is not implemented.")
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def add_bond(self, bond):
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"""Add an OvsBond object to the net config object.
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:param bridge: The OvsBond object to add.
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"""
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raise NotImplemented("add_bond is not implemented.")
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def add_linux_bond(self, bond):
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"""Add a LinuxBond object to the net config object.
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:param bridge: The LinuxBond object to add.
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"""
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raise NotImplemented("add_linuxbond is not implemented.")
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def apply(self, cleanup=False):
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"""Apply the network configuration.
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:param cleanup: A boolean which indicates whether any undefined
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(existing but not present in the object model) interfaces
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should be disabled and deleted.
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:returns: a dict of the format: filename/data which contains info
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for each file that was changed (or would be changed if in --noop
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mode).
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"""
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raise NotImplemented("apply is not implemented.")
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def execute(self, msg, cmd, *args, **kwargs):
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"""Print a message and run a command.
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Print a message and run a command with processutils
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in noop mode, this just prints a message.
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"""
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logger.info('%s%s' % (self.log_prefix, msg))
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if not self.noop:
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processutils.execute(cmd, *args, **kwargs)
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def write_config(self, filename, data, msg=None):
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msg = msg or "Writing config %s" % filename
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logger.info('%s%s' % (self.log_prefix, msg))
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if not self.noop:
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utils.write_config(filename, data)
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def remove_config(self, filename, msg=None):
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msg = msg or "Removing config %s" % filename
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logger.info('%s%s' % (self.log_prefix, msg))
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if not self.noop:
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os.remove(filename)
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def ifdown(self, interface, iftype='interface'):
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msg = 'running ifdown on %s: %s' % (iftype, interface)
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self.execute(msg, '/sbin/ifdown', interface, check_exit_code=False)
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def ifup(self, interface, iftype='interface'):
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msg = 'running ifup on %s: %s' % (iftype, interface)
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self.execute(msg, '/sbin/ifup', interface)
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def ifrename(self, oldname, newname):
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msg = 'renaming %s to %s: ' % (oldname, newname)
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# ifdown isn't enough when renaming, we need the link down
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for name in (oldname, newname):
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if utils._is_active_nic(name):
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self.execute(msg, '/sbin/ip',
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'link', 'set', 'dev', name, 'down')
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self.execute(msg, '/sbin/ip',
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'link', 'set', 'dev', name, 'link', 'down')
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self.execute(msg, '/sbin/ip',
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'link', 'set', 'dev', oldname, 'name', newname)
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self.execute(msg, '/sbin/ip',
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'link', 'set', 'dev', newname, 'up')
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def ovs_appctl(self, action, *parameters):
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msg = 'Running ovs-appctl %s %s' % (action, parameters)
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self.execute(msg, '/bin/ovs-appctl', action, *parameters)
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