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# -*- coding: utf-8 -*-
# Copyright 2014 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 os_net_config
from os_net_config import objects
from os_net_config import utils
from os_net_config.openstack.common import processutils
logger = logging.getLogger(__name__)
def ifcfg_config_path(name):
return "/etc/sysconfig/network-scripts/ifcfg-%s" % name
#NOTE(dprince): added here for testability
def bridge_config_path(name):
return ifcfg_config_path(name)
def route_config_path(name):
return "/etc/sysconfig/network-scripts/route-%s" % name
class IfcfgNetConfig(os_net_config.NetConfig):
"""Configure network interfaces using the ifcfg format."""
def __init__(self):
self.interfaces = {}
self.routes = {}
self.bridges = {}
logger.info('Ifcfg net config provider created.')
def _addCommon(self, base_opt):
data = "DEVICE=%s\n" % base_opt.name
data += "ONBOOT=yes\n"
data += "HOTPLUG=no\n"
if isinstance(base_opt, objects.Vlan):
data += "VLAN=yes\n"
data += "PHYSDEV=%s\n" % base_opt.device
if base_opt.ovs_port:
data += "DEVICETYPE=ovs\n"
if base_opt.bridge_name:
if isinstance(base_opt, objects.Vlan):
data += "TYPE=OVSIntPort\n"
data += "OVS_BRIDGE=%s\n" % base_opt.bridge_name
data += "OVS_OPTIONS=\"tag=%s\"\n" % base_opt.vlan_id
else:
data += "TYPE=OVSPort\n"
data += "OVS_BRIDGE=%s\n" % base_opt.bridge_name
if isinstance(base_opt, objects.OvsBridge):
data += "DEVICETYPE=ovs\n"
data += "TYPE=OVSBridge\n"
if base_opt.use_dhcp:
data += "OVSBOOTPROTO=dhcp\n"
if base_opt.members:
members = [member.name for member in base_opt.members]
data += ("OVSDHCPINTERFACES=\"%s\"\n" % " ".join(members))
if base_opt.ovs_options:
data += "OVS_OPTIONS=\"%s\"\n" % base_opt.ovs_options
elif isinstance(base_opt, objects.OvsBond):
data += "DEVICETYPE=ovs\n"
data += "TYPE=OVSBond\n"
if base_opt.use_dhcp:
data += "OVSBOOTPROTO=dhcp\n"
if base_opt.members:
members = [member.name for member in base_opt.members]
data += ("BOND_IFACES=\"%s\"\n" % " ".join(members))
if base_opt.ovs_options:
data += "OVS_OPTIONS=\"%s\"\n" % base_opt.ovs_options
else:
if base_opt.use_dhcp:
data += "BOOTPROTO=dhcp\n"
elif not base_opt.addresses:
data += "BOOTPROTO=none\n"
if base_opt.mtu != 1500:
data += "MTU=%i\n" % base_opt.mtu
if base_opt.use_dhcpv6 or base_opt.v6_addresses():
data += "IPV6INIT=yes\n"
if base_opt.mtu != 1500:
data += "IPV6_MTU=%i\n" % base_opt.mtu
if base_opt.use_dhcpv6:
data += "DHCPV6C=yes\n"
elif base_opt.addresses:
#TODO(dprince): Do we want to support multiple addresses?
v4_addresses = base_opt.v4_addresses()
if v4_addresses:
first_v4 = v4_addresses[0]
data += "BOOTPROTO=static\n"
data += "IPADDR=%s\n" % first_v4.ip
data += "NETMASK=%s\n" % first_v4.netmask
v6_addresses = base_opt.v6_addresses()
if v6_addresses:
first_v6 = v6_addresses[0]
data += "IPV6_AUTOCONF=no\n"
data += "IPV6ADDR=%s\n" % first_v6.ip
return data
def _addRoutes(self, interface_name, routes=[]):
logger.info('adding custom route for interface: %s' % interface_name)
data = ""
first_line = ""
for route in routes:
if route.default:
first_line = "default via %s dev %s\n" % (route.next_hop,
interface_name)
else:
data += "%s via %s dev %s\n" % (route.ip_netmask,
route.next_hop,
interface_name)
self.routes[interface_name] = first_line + data
logger.debug('route data: %s' % self.routes[interface_name])
def addInterface(self, interface):
logger.info('adding interface: %s' % interface.name)
data = self._addCommon(interface)
logger.debug('interface data: %s' % data)
self.interfaces[interface.name] = data
if interface.routes:
self._addRoutes(interface.name, interface.routes)
def addVlan(self, vlan):
logger.info('adding vlan: %s' % vlan.name)
data = self._addCommon(vlan)
logger.debug('vlan data: %s' % data)
self.interfaces[vlan.name] = data
if vlan.routes:
self._addRoutes(vlan.name, vlan.routes)
def addBridge(self, bridge):
logger.info('adding bridge: %s' % bridge.name)
data = self._addCommon(bridge)
logger.debug('bridge data: %s' % data)
self.bridges[bridge.name] = data
if bridge.routes:
self._addRoutes(bridge.name, bridge.routes)
def addBond(self, bond):
logger.info('adding bond: %s' % bond.name)
data = self._addCommon(bond)
logger.debug('bond data: %s' % data)
self.interfaces[bond.name] = data
if bond.routes:
self._addRoutes(bond.name, bond.routes)
def apply(self):
logger.info('applying network configs...')
restart_interfaces = []
restart_bridges = []
update_files = {}
for interface_name, iface_data in self.interfaces.iteritems():
route_data = self.routes.get(interface_name, '')
if (utils.diff(ifcfg_config_path(interface_name), iface_data) or
utils.diff(route_config_path(interface_name), route_data)):
restart_interfaces.append(interface_name)
update_files[ifcfg_config_path(interface_name)] = iface_data
update_files[route_config_path(interface_name)] = route_data
else:
logger.info('No changes required for interface: %s' %
interface_name)
for bridge_name, bridge_data in self.bridges.iteritems():
route_data = self.routes.get(bridge_name, '')
if (utils.diff(ifcfg_config_path(bridge_name), bridge_data) or
utils.diff(route_config_path(bridge_name), route_data)):
restart_bridges.append(bridge_name)
update_files[bridge_config_path(bridge_name)] = bridge_data
update_files[route_config_path(bridge_name)] = route_data
else:
logger.info('No changes required for bridge: %s' % bridge_name)
for interface in restart_interfaces:
logger.info('running ifdown on interface: %s' % interface)
processutils.execute('/sbin/ifdown', interface,
check_exit_code=False)
for bridge in restart_bridges:
logger.info('running ifdown on bridge: %s' % bridge)
processutils.execute('/sbin/ifdown', bridge,
check_exit_code=False)
for location, data in update_files.iteritems():
logger.info('writing config file: %s' % location)
utils.write_config(location, data)
for bridge in restart_bridges:
logger.info('running ifup on bridge: %s' % bridge)
processutils.execute('/sbin/ifup', bridge)
for interface in restart_interfaces:
logger.info('running ifup on interface: %s' % interface)
processutils.execute('/sbin/ifup', interface)
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