def configure_network_interfaces():
"""Configure network interfaces
This function configure the following network interfaces stxbr[1-4]
"""
for interface in range(1, 5):
current_interface = 'stxbr{}'.format(interface)
# adding the network interface
try:
brctl.addbr(current_interface)
except IOError:
LOG.warning('[Errno 17] File exists %s', current_interface)
networks = [
'stxbr1 10.10.10.1/24', 'stxbr2 192.168.204.1/24', 'stxbr3', 'stxbr4'
]
for net in networks:
eval_cmd = bash('sudo ifconfig {} up'.format(net))
if 'ERROR'.encode('utf-8') in eval_cmd.stderr:
LOG.error(eval_cmd.stderr)
raise EnvironmentError(eval_cmd.stderr)
# setting the ip tables
iptables = ('sudo iptables -t nat -A POSTROUTING -s 10.10.10.0/24 -j '
'MASQUERADE')
eval_cmd = bash(iptables)
if 'ERROR'.encode('utf-8') in eval_cmd.stderr:
LOG.error(eval_cmd.stderr)
raise EnvironmentError(eval_cmd.stderr)
def test_addbr_delete():
br = brctl.addbr(b'br_test')
try:
check_output(b'brctl show', substr=[br.name])
finally:
br.delete()
check_output(b'brctl show', not_substr=[br.name])
def __init__(self, name):
"""
:param name: Name of the bridge
"""
self.name = name
self.bridge = brctl.addbr(self.name)
subprocess.call(['ip', 'link', 'set', 'dev', self.name, 'up'])
subprocess.call(
['tc', 'qdisc', 'add', 'dev', self.name, 'root', 'netem'])
def delete_network_interfaces():
"""Delete network interfaces
This function performs a clean up for the following network interfaces
virbr[1-4]
"""
# elevate module re-launches the current process with root/admin privileges
# using one of the following mechanisms : sudo (Linux, macOS)
# becoming in root
elevate(graphical=False)
ifdata = Ifcfg(subprocess.check_output(['ifconfig', '-a']))
for interface in range(1, 5):
current_interface = 'virbr{}'.format(interface)
if current_interface in ifdata.interfaces:
# the network interface exists
net_object = ifdata.get_interface(current_interface)
net_up = net_object.get_values().get('UP')
net_running = net_object.get_values().get('RUNNING')
if net_up or net_running:
# the network interface is up or running
try:
# down and delete the network interface
ifconfig.Interface(current_interface).down()
brctl.Bridge(current_interface).delete()
except IOError:
LOG.warn('[Errno 19] No such device: {}'.format(
current_interface))
# adding the network interface
try:
brctl.addbr(current_interface)
except IOError:
LOG.warn('[Errno 17] File exists {}'.format(current_interface))
def create_bridge_with_vid(name, vid):
devlist = [dev for dev in ifconfig.iterifs(physical=False) if dev.name == "eth1.10"]
if len(devlist) != 0:
raise Exists("eth1.10")
br0 = brctl.findbridge(name)
if br0:
raise Exists("br0")
br0 = brctl.addbr(name)
vconfig.add_vlan("eth1", vid)
iface1 = ifconfig.Interface("eth1.%s" % vid)
br0.addif(iface1)
br_iface = ifconfig.Interface(name)
iface1.up()
br_iface.up()
return
def bridge(request, name):
br = brctl.addbr(name)
def cleanup():
br.delete()
request.addfinalizer(cleanup)
return br
