def test_link_add_veth(self):
"""Test definitiion of veth device.
"""
netdev.link_add_veth('foo', 'bar')
treadmill.subproc.check_call.assert_called_with([
'ip', 'link', 'add', 'name', 'foo', 'type', 'veth', 'peer', 'name',
'bar'
], )
def on_create_request(self, rsrc_id, rsrc_data):
"""
:returns ``dict``:
Network IP `vip`, network device `veth`, IP gateway `gateway`.
"""
with lc.LogContext(_LOGGER, rsrc_id,
adapter_cls=lc.ContainerAdapter) as log:
log.debug('req: %r', rsrc_data)
app_unique_name = rsrc_id
environment = rsrc_data['environment']
assert environment in _SET_BY_ENVIRONMENT, \
'Unknown environment: %r' % environment
veth0, veth1 = _device_from_rsrc_id(app_unique_name)
if app_unique_name not in self._devices:
# VIPs allocation (the owner is the resource link)
ip = self._vips.alloc(rsrc_id)
self._devices[app_unique_name] = {'ip': ip}
else:
# Re-read what IP we assigned before
ip = self._devices[app_unique_name]['ip']
if 'device' not in self._devices[app_unique_name]:
# Create the interface pair
netdev.link_add_veth(veth0, veth1)
# Configure the links
netdev.link_set_mtu(veth0, self.ext_mtu)
netdev.link_set_mtu(veth1, self.ext_mtu)
# Tag the interfaces
netdev.link_set_alias(veth0, rsrc_id)
netdev.link_set_alias(veth1, rsrc_id)
# Add interface to the bridge
netdev.bridge_addif(self._TMBR_DEV, veth0)
netdev.link_set_up(veth0)
# We keep veth1 down until inside the container
# Record the new device in our state
self._devices[app_unique_name] = _device_info(veth0)
self._devices[app_unique_name].update({
'ip': ip,
'environment': environment,
})
# We can now mark ip traffic as belonging to the requested
# environment.
_add_mark_rule(ip, environment)
result = {
'vip': ip,
'veth': veth1,
'gateway': self._TM_IP,
'external_ip': self.ext_ip,
}
return result
def _bridge_initialize(self):
"""Reset/initialize the Treadmill node bridge.
"""
try:
# FIXME(boysson): This is for migration when TM_DEV0 used to be a
# bridge.
netdev.link_set_down(self._TM_DEV0)
netdev.bridge_delete(self._TM_DEV0)
except subproc.CalledProcessError:
pass
try:
netdev.link_set_down(self._TM_DEV0)
netdev.link_del_veth(self._TM_DEV0)
except subproc.CalledProcessError:
pass
try:
netdev.link_set_down(self._TMBR_DEV)
netdev.bridge_delete(self._TMBR_DEV)
except subproc.CalledProcessError:
pass
netdev.bridge_create(self._TMBR_DEV)
netdev.bridge_setfd(self._TMBR_DEV, 0)
netdev.link_add_veth(self._TM_DEV0, self._TM_DEV1)
netdev.link_set_mtu(self._TM_DEV0, self.ext_mtu)
netdev.link_set_mtu(self._TM_DEV1, self.ext_mtu)
netdev.bridge_addif(self._TMBR_DEV, self._TM_DEV1)
# Force the bridge MAC address to the Treadmill device. This
# prevents the bridge's MAC from changing when adding/removing
# container interfaces.
# (Default Linux bridge behavior is to set the bridge's MAC to be
# lowest of it's ports).
tm_mac = netdev.dev_mac(self._TM_DEV1)
netdev.link_set_addr(self._TMBR_DEV, tm_mac)
# Bring up the bridge interface
netdev.link_set_up(self._TMBR_DEV)
netdev.link_set_up(self._TM_DEV1)
netdev.addr_add(
addr='{ip}/16'.format(ip=self._TM_IP),
devname=self._TM_DEV0
)
# Enable route_localnet so that we can redirect traffic from the
# container to the node's loopback address.
netdev.dev_conf_route_localnet_set(self._TM_DEV0, True)
# Bring up the TM interface
netdev.link_set_up(self._TM_DEV0)
