def plug_bridge(self, instance, vif):
if_local_name = 'tap%s' % vif['id'][:11]
if_remote_name = 'ns%s' % vif['id'][:11]
bridge = vif['network']['bridge']
gateway = network.find_gateway(instance, vif['network'])
vlan = vif.get('vlan')
if vlan is not None:
iface = (CONF.vlan_interface or
vif['network'].get_meta('bridge_interface'))
linux_net.LinuxBridgeInterfaceDriver.ensure_vlan_bridge(
vlan,
bridge,
iface,
net_attrs=vif,
mtu=vif.get('mtu'))
iface = 'vlan%s' % vlan
else:
iface = (CONF.flat_interface or
vif['network'].get_meta('bridge_interface'))
LOG.debug('Ensuring bridge for %s - %s' % (iface, bridge))
linux_net.LinuxBridgeInterfaceDriver.ensure_bridge(
bridge,
iface,
net_attrs=vif,
gateway=gateway)
# Device already exists so return.
if linux_net.device_exists(if_local_name):
return
undo_mgr = utils.UndoManager()
try:
mac_addr = vif["network"]["mac_addr"]
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('ip', 'link', 'set', if_local_name, 'address',
mac_addr, run_as_root=True)
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)
except Exception:
LOG.exception("Failed to configure network")
msg = _('Failed to setup the network, rolling back')
undo_mgr.rollback_and_reraise(msg=msg, instance=instance)
def create_pod(self, image_name, name, cpu_shares, command, sshdir, network_info, instance, host_config):
obj = {
"id": name,
"tty": True,
"resource":{
"vcpu": cpu_shares,
"memory": host_config['mem_limit'],
},
"containers": [{
"image": image_name,
"command": ["/bin/sh"], #todo: change to command
"files": [],
"volumes": [],
}],
"files": [],
"volumes": [],
}
if sshdir:
obj["volumes"].append({
"name": "sshdir",
"source": sshdir,
"driver": "vfs"
})
for container in obj["containers"]:
container["volumes"].append({
"volume": "sshdir",
"path": "/root/.ssh",
"readOnly": True
})
if network_info:
obj["interfaces"] = []
for vif in network_info:
obj["interfaces"].append({
"bridge": vif['network']['bridge'],
"ifname": vif['network']['if_local_name'],
"mac": vif["network"].get("mac_addr"),
"ip": network.find_fixed_ip(instance, vif['network']),
"gateway": network.find_gateway(instance, vif['network'])
})
result = self._result(self._post_json(url=self._url('/pod/create'),
data=obj),
json=True)
return result
def attach(self, instance, vif, pod_id):
vif_type = vif['type']
if_remote_name = 'ns%s' % vif['id'][:11]
gateway = network.find_gateway(instance, vif['network'])
ip = network.find_fixed_ip(instance, vif['network'])
LOG.debug('attach vif_type=%(vif_type)s instance=%(instance)s '
'vif=%(vif)s',
{'vif_type': vif_type, 'instance': instance,
'vif': vif})
try:
utils.execute('ip', 'link', 'set', if_remote_name, 'netns',
pod_id, run_as_root=True)
utils.execute('ip', 'netns', 'exec', pod_id, 'ip', 'link',
'set', if_remote_name, 'address', vif['address'],
run_as_root=True)
utils.execute('ip', 'netns', 'exec', pod_id, 'ip', 'addr',
'add', ip, 'dev', if_remote_name, run_as_root=True)
utils.execute('ip', 'netns', 'exec', pod_id, 'ip', 'link',
'set', if_remote_name, 'up', run_as_root=True)
# Setup MTU on if_remote_name is required if it is a non
# default value
mtu = CONF.network_device_mtu
if vif.get('mtu') is not None:
mtu = vif.get('mtu')
if mtu is not None:
utils.execute('ip', 'netns', 'exec', pod_id, 'ip',
'link', 'set', if_remote_name, 'mtu', mtu,
run_as_root=True)
if gateway is not None:
utils.execute('ip', 'netns', 'exec', pod_id,
'ip', 'route', 'replace', 'default', 'via',
gateway, 'dev', if_remote_name, run_as_root=True)
except Exception:
LOG.exception("Failed to attach vif")
