def _setup_network(self, instance, network_info):
if not network_info:
return
container_id = self._find_container_by_name(instance['name']).get('id')
if not container_id:
return
network_info = network_info[0]['network']
netns_path = '/var/run/netns'
if not os.path.exists(netns_path):
utils.execute(
'mkdir', '-p', netns_path, run_as_root=True)
nspid = self._find_container_pid(container_id)
if not nspid:
msg = _('Cannot find any PID under container "{0}"')
raise RuntimeError(msg.format(container_id))
netns_path = os.path.join(netns_path, container_id)
utils.execute(
'ln', '-sf', '/proc/{0}/ns/net'.format(nspid),
'/var/run/netns/{0}'.format(container_id),
run_as_root=True)
rand = random.randint(0, 100000)
if_local_name = 'pvnetl{0}'.format(rand)
if_remote_name = 'pvnetr{0}'.format(rand)
bridge = network_info['bridge']
gateway = network.find_gateway(instance, network_info)
ip = network.find_fixed_ip(instance, network_info)
undo_mgr = utils.UndoManager()
try:
utils.execute(
'ip', 'link', 'add', 'name', if_local_name, 'type',
'veth', 'peer', 'name', if_remote_name,
run_as_root=True)
undo_mgr.undo_with(lambda: utils.execute(
'ip', 'link', 'delete', if_local_name, run_as_root=True))
# NOTE(samalba): Deleting the interface will delete all associated
# resources (remove from the bridge, its pair, etc...)
utils.execute(
'brctl', 'addif', bridge, if_local_name,
run_as_root=True)
utils.execute(
'ip', 'link', 'set', if_local_name, 'up',
run_as_root=True)
utils.execute(
'ip', 'link', 'set', if_remote_name, 'netns', nspid,
run_as_root=True)
utils.execute(
'ip', 'netns', 'exec', container_id, 'ifconfig',
if_remote_name, ip,
run_as_root=True)
utils.execute(
'ip', 'netns', 'exec', container_id,
'ip', 'route', 'replace', 'default', 'via', gateway, 'dev',
if_remote_name, run_as_root=True)
except Exception:
msg = _('Failed to setup the network, rolling back')
undo_mgr.rollback_and_reraise(msg=msg, instance=instance)
def _setup_network(self, instance, network_info):
if not network_info:
return
container_id = self.find_container_by_name(instance['name']).get('id')
if not container_id:
return
network_info = network_info[0]['network']
netns_path = '/var/run/netns'
if not os.path.exists(netns_path):
utils.execute('mkdir', '-p', netns_path, run_as_root=True)
nspid = self._find_container_pid(container_id)
if not nspid:
msg = _('Cannot find any PID under container "{0}"')
raise RuntimeError(msg.format(container_id))
netns_path = os.path.join(netns_path, container_id)
utils.execute('ln',
'-sf',
'/proc/{0}/ns/net'.format(nspid),
'/var/run/netns/{0}'.format(container_id),
run_as_root=True)
rand = random.randint(0, 100000)
if_local_name = 'pvnetl{0}'.format(rand)
if_remote_name = 'pvnetr{0}'.format(rand)
bridge = network_info['bridge']
gateway = network.find_gateway(instance, network_info)
ip = network.find_fixed_ip(instance, network_info)
undo_mgr = utils.UndoManager()
try:
utils.execute('ip',
'link',
'add',
'name',
if_local_name,
'type',
'veth',
'peer',
'name',
if_remote_name,
run_as_root=True)
undo_mgr.undo_with(lambda: utils.execute(
'ip', 'link', 'delete', if_local_name, run_as_root=True))
# NOTE(samalba): Deleting the interface will delete all associated
# resources (remove from the bridge, its pair, etc...)
utils.execute('brctl',
'addif',
bridge,
if_local_name,
run_as_root=True)
utils.execute('ip',
'link',
'set',
if_local_name,
'up',
run_as_root=True)
utils.execute('ip',
'link',
'set',
if_remote_name,
'netns',
nspid,
run_as_root=True)
utils.execute('ip',
'netns',
'exec',
container_id,
'ifconfig',
if_remote_name,
ip,
run_as_root=True)
utils.execute('ip',
'netns',
'exec',
container_id,
'ip',
'route',
'replace',
'default',
'via',
gateway,
'dev',
if_remote_name,
run_as_root=True)
except Exception:
msg = _('Failed to setup the network, rolling back')
undo_mgr.rollback_and_reraise(msg=msg, instance=instance)
def _setup_network(self, instance, network_info):
if not network_info:
return
container_id = self.find_container_by_name(instance["name"]).get("id")
if not container_id:
return
network_info = network_info[0]["network"]
netns_path = "/var/run/netns"
if not os.path.exists(netns_path):
utils.execute("mkdir", "-p", netns_path, run_as_root=True)
nspid = self._find_container_pid(container_id)
if not nspid:
msg = _('Cannot find any PID under container "{0}"')
raise RuntimeError(msg.format(container_id))
netns_path = os.path.join(netns_path, container_id)
utils.execute(
"ln", "-sf", "/proc/{0}/ns/net".format(nspid), "/var/run/netns/{0}".format(container_id), run_as_root=True
)
rand = random.randint(0, 100000)
if_local_name = "pvnetl{0}".format(rand)
if_remote_name = "pvnetr{0}".format(rand)
bridge = network_info["bridge"]
gateway = network.find_gateway(instance, network_info)
ip = network.find_fixed_ip(instance, network_info)
undo_mgr = utils.UndoManager()
try:
utils.execute(
"ip",
"link",
"add",
"name",
if_local_name,
"type",
"veth",
"peer",
"name",
if_remote_name,
run_as_root=True,
)
undo_mgr.undo_with(lambda: utils.execute("ip", "link", "delete", if_local_name, run_as_root=True))
# NOTE(samalba): Deleting the interface will delete all associated
# resources (remove from the bridge, its pair, etc...)
utils.execute("brctl", "addif", bridge, if_local_name, run_as_root=True)
utils.execute("ip", "link", "set", if_local_name, "up", run_as_root=True)
utils.execute("ip", "link", "set", if_remote_name, "netns", nspid, run_as_root=True)
utils.execute("ip", "netns", "exec", container_id, "ifconfig", if_remote_name, ip, run_as_root=True)
utils.execute(
"ip",
"netns",
"exec",
container_id,
"ip",
"route",
"replace",
"default",
"via",
gateway,
"dev",
if_remote_name,
run_as_root=True,
)
except Exception:
msg = _("Failed to setup the network, rolling back")
undo_mgr.rollback_and_reraise(msg=msg, instance=instance)
def test_find_gateway(self):
instance = {'uuid': uuid.uuid4()}
network_info = test_utils.get_test_network_info()
first_net = network_info[0]['network']
first_net['subnets'][0]['gateway']['address'] = '10.0.0.1'
self.assertEqual('10.0.0.1', network.find_gateway(instance, first_net))