def attach_to_container(self, container_pid, is_route=False, gateway=None):
self._is_attach_to_container = True
self._attach_to_container_pid = container_pid
try:
ip('link', 'set', 'netns', self._attach_to_container_pid, self._veth_name)
nsenter('-t', self._attach_to_container_pid,
'-n', 'ip', 'link', 'set', self._veth_name, 'up')
if '0.0.0.0' not in self._ip_netmask:
nsenter('-t', self._attach_to_container_pid,
'-n', 'ip', 'addr', 'add', self._ip_netmask, 'dev', self._veth_name)
except Exception as e:
raise VEthAttachException("attach macvlan eth error:\n{}".format(e.message))
if is_route:
if not gateway:
raise ValueError("Please set the gateway for %s" % self._veth_name)
else:
nsenter('-t', self._attach_to_container_pid,
'-n', 'ip', 'route', 'del', 'default')
nsenter('-t', self._attach_to_container_pid,
'-n', 'ip', 'route', 'add', 'default', 'via', gateway, 'dev', self._veth_name)
#arping my gateway, cause the gateway to flush the ARP cache for my IP address
try:
nsenter('-t', self._attach_to_container_pid,
'-n', 'ping', '-c', '1', gateway)
except Exception as e:
logger.warning(e.message)
return self
def create(self):
try:
ip('link', 'add', self._veth_name,
'link', self._link_to, 'address', self.gen_mac_address(), 'type', 'macvlan', 'mode', 'bridge')
except Exception as e:
raise VEthCreateException("create macvlan eth error:\n{}".format(e.message))
return self
def ndp_proxy(method, vm):
validate_method(method)
vm_info = hedron.virtual_machine_info(vm)
ip6 = vm_info['network_interfaces'][0]['ipv6']
device = get_default_v6_route_device()
sh.ip('-6', 'neigh', method, 'proxy', ip6, 'dev', device)
return True
def delete(network="default"):
"""
Delete a routing rule
"""
try:
sh.ip("route", "del", network)
except sh.ErrorReturnCode_2:
pass
def delete(self):
try:
if self._is_attach_to_container:
nsenter('-t', self._attach_to_container_pid,
'-n', 'ip', 'link', 'del', self._veth_name)
else:
ip('link', 'del', self._veth_name)
except Exception as e:
raise VEthDeleteException("delete macvlan eth error:\n{}".format(e.message))
def create(self):
try:
ip('link', 'add',
self._veth_name, 'link', self._link_to, 'address',
self.gen_mac_address(), 'type', 'macvlan', 'mode', 'bridge')
except Exception as e:
raise VEthCreateException("create macvlan eth error:\n{}".format(
e.message))
return self
def delete(self):
try:
if self._is_attach_to_container:
nsenter('-t', self._attach_to_container_pid, '-n', 'ip',
'link', 'del', self._veth_name)
else:
ip('link', 'del', self._veth_name)
except Exception as e:
raise VEthDeleteException("delete macvlan eth error:\n{}".format(
e.message))
def down(self):
try:
if self._is_attach_to_container:
nsenter('-t', self._attach_to_container_pid,
'-n', 'ip', 'link', self._veth_name, 'down')
else:
ip('link', 'set', self._veth_name, 'down')
except Exception as e:
raise VEthDownException("down macvlan eth error:\n{}".format(e.message))
return self
def route(method, vm):
"""
Not needed if using primary is bridged with the public interface,
but doesn't hurt, either.
"""
validate_method(method)
vm_info = hedron.virtual_machine_info(vm)
ip6 = vm_info['network_interfaces'][0]['ipv6']
arguments = _route_command(method, ip6)
sh.ip(arguments)
return True
def up(self):
try:
if self._is_attach_to_container:
docker('exec', self._attach_to_container_id, 'ip', 'link',
'del', self._veth_name)
else:
ip('link', 'set', self._veth_name, 'up')
except Exception as e:
raise VEthUpException("up macvlan eth error:\n{}".format(
e.message))
return self
def down(self):
try:
if self._is_attach_to_container:
nsenter('-t', self._attach_to_container_pid, '-n', 'ip',
'link', self._veth_name, 'down')
else:
ip('link', 'set', self._veth_name, 'down')
except Exception as e:
raise VEthDownException("down macvlan eth error:\n{}".format(
e.message))
return self
def create(self):
try:
veth_lockfile = join(settings.RUN_ROOT, self._veth_name + '.lock')
with FileLock(veth_lockfile).acquire(
timeout=settings.LOCK_TIMEOUT):
ip('link', 'add',
self._veth_name, 'link', self._link_to, 'address',
self.gen_mac_address(), 'type', 'macvlan', 'mode', 'bridge')
except Exception as e:
raise VEthCreateException("create macvlan eth error:\n{}".format(
e.message))
return self
def delete(network="default"):
"""Delete a routing rule.
Args:
network: destination of the routing rule to be delete
Raises:
FIXME
"""
try:
sh.ip("route", "del", network)
except sh.ErrorReturnCode_2:
pass
def ifupdown(iface, up):
"""Set an interface to up or down status.
Args:
iface: interface name.
up: status for the interface, True for up and False for down.
Raises:
ValueError
"""
if not up:
dhclient(iface, False)
try:
sh.ip("link", "set", iface, "up" if up else "down")
except Exception:
raise ValueError("Cannot update the link status for \"%s\"." % iface)
def ifupdown(iface, up):
"""Set an interface to up or down status.
Args:
iface: interface name.
up: status for the interface, True for up and False for down.
Raises:
ValueError
"""
if not up:
dhclient(iface, False)
try:
sh.ip("link", "set", iface, "up" if up else "down")
except:
raise ValueError("Cannot update the link status for \"%s\"."
% iface)
def add(dest, dev="", src="", nexthop=None):
"""
Add a routing rule
Args:
dest: destination for the routing rule, "default" for default route
ex. "192.168.4.0/24" or "default"
dev: routing device, could be empty
ex. "wwan0", "eth0"
src: source for the routing rule, fill "gateway" if dest is "default"
ex. "192.168.4.127", "192.168.4.254"
nexthop: nexthop info. for load balance
[
{
"via": "10.94.87.78",
"dev": "wwan0",
"weight": 1
},
{
"via": "10.144.7.254",
"dev": "eth0",
"weight": 1
}
]
"""
if "default" == dest:
if nexthop:
param = ["route", "add", dest]
for nh in nexthop:
param.append("nexthop")
for k, v in nh.iteritems():
param.extend([k, v])
sh.ip(*param)
elif dev:
sh.ip("route", "add", dest, "dev", dev, "via", src)
else:
sh.ip("route", "add", dest, "via", src)
elif "" == src:
sh.ip("route", "add", dest, "dev", dev)
else:
sh.ip("route", "add", dest, "dev", dev, "proto", "kernel", "scope",
"link", "src", src)
def get_vpn_gateway(_output_level=2):
# TODO: We could just parse this from the `remote` options in the `openvpn`
# conf and check against an existing route.
# TODO: Extract the corresponding port for the firewall rule too, while
# you're at it!
external_ip = get_connection_info()['ip']
ip_r = sh.ip('r', _bg=True)
with output.Attempts(
'Resolving IP of VPN gateway',
num_attempts=20,
_output_level=_output_level
) as attempts:
for attempt in attempts:
if ip_r.process.is_alive():
attempt.passed()
else:
attempt.successful = True
if not attempts.successful:
raise NetworkError('Failed to resolve IP of VPN gateway')
gateway_ip_candidates = difflib.get_close_matches(
external_ip,
ip_r.stdout.split(),
)
if not gateway_ip_candidates:
raise NetworkError(
'No candidates for VPN gateway IP identified. Nothing is similar'
' to {} in {}'.format(external_ip, ip_r.stdout))
elif len(gateway_ip_candidates) > 1:
raise NetworkError(
'Multiple candidates for VPN gateway IPs identified: {} are'
' similar to {}'.format(gateway_ip_candidates, external_ip)
)
else:
gateway_ip = gateway_ip_candidates.pop()
row = re.search(
'^{} via .+ dev (?P<device>\S+) $'.format(gateway_ip),
ip_r.stdout,
re.MULTILINE
)
if not row:
raise NetworkError('No route to VPN gateway detected.')
return row.group('device'), gateway_ip
def attach_to_container(self, container_pid, is_route=False, gateway=None):
self._is_attach_to_container = True
self._attach_to_container_pid = container_pid
try:
ip('link', 'set', 'netns', self._attach_to_container_pid,
self._veth_name)
nsenter('-t', self._attach_to_container_pid, '-n', 'ip', 'link',
'set', self._veth_name, 'up')
if '0.0.0.0' not in self._ip_netmask:
nsenter('-t', self._attach_to_container_pid, '-n', 'ip',
'addr', 'add', self._ip_netmask, 'dev',
self._veth_name)
except Exception as e:
raise VEthAttachException("attach macvlan eth error:\n{}".format(
e.message))
if is_route:
if not gateway:
raise ValueError("Please set the gateway for %s" %
self._veth_name)
else:
nsenter('-t', self._attach_to_container_pid, '-n', 'ip',
'route', 'del', 'default')
nsenter('-t', self._attach_to_container_pid, '-n', 'ip',
'route', 'add', 'default', 'via', gateway, 'dev',
self._veth_name)
#arping my gateway, cause the gateway to flush the ARP cache for my IP address
try:
nsenter('-t', self._attach_to_container_pid, '-n', 'ping',
'-c', '1', gateway)
except Exception as e:
logger.warning(e.message)
return self
def compareIp():
logging.debug("Comparing ip...")
#ip a s eth0 | egrep -o 'inet [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | cut -d' ' -f2
curIp = str(cut(egrep(ip('a', 's', 'eth0'), '-o', 'inet [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'), '-d', ' ', '-f2')).strip()
masterNetworkCfg = cat('/etc/systemd/network/000-master.network').split('\n')
for i in range(len(masterNetworkCfg)):
if masterNetworkCfg[i] == '[Address]':
masterIp = masterNetworkCfg[i+1].split('=')[1].strip()
logging.debug("Master ip found, breaking the loop...")
break
if curIp==masterIp:
logging.debug("Master IP == cur IP...")
return True, masterIp
logging.debug("Master IP != cur IP...")
return False, masterIp
def build_network(_server):
network = _server['meta']['network']
sort_order = ['physical', 'symlink', 'bond', 'tagged']
networks = sorted(network.items(),
key=lambda x: sort_order.index(x[1]['type']))
for name, net in networks:
if net['type'] == 'symlink':
continue
elif net['type'] == 'bond':
sh.modprobe('bonding', 'mode=4', 'miimon=100',
'xmit_hash_policy=1')
sh.ifconfig(name, 'up')
for iface in net['interfaces']:
sh.ifenslave(name, iface)
elif net['type'] == 'tagged':
iface = net['interfaces'][0]
sh.vconfig('add', iface, net['vlan'])
sh.ifconfig(name, 'up')
# Assign ip if required
if net.get('ip'):
ip = netaddr.IPNetwork('/'.join((net['ip'], net['mask'])))
sh.ip('addr', 'add', str(ip), 'brd', str(ip.broadcast), 'dev',
name)
def build_network(_server):
network = _server['meta']['network']
sort_order = ['physical', 'symlink', 'bond', 'tagged']
networks = sorted(network.items(),
key=lambda x: sort_order.index(x[1]['type']))
for name, net in networks:
if net['type'] == 'symlink':
continue
elif net['type'] == 'bond':
sh.modprobe('bonding', 'mode=4', 'miimon=100',
'xmit_hash_policy=1')
sh.ifconfig(name, 'up')
for iface in net['interfaces']:
sh.ifenslave(name, iface)
elif net['type'] == 'tagged':
iface = net['interfaces'][0]
sh.vconfig('add', iface, net['vlan'])
sh.ifconfig(name, 'up')
# Assign ip if required
if net.get('ip'):
ip = netaddr.IPNetwork('/'.join((net['ip'], net['mask'])))
sh.ip('addr', 'add', str(ip),
'brd', str(ip.broadcast), 'dev', name)
def add(dest, dev="", src=""):
"""Add a routing rule.
Args:
dest: destination for the routing rule, default for default route.
dev: routing device, could be empty
src: source for the routing rule, fill "gateway" if dest is "default"
Raises:
FIXME
"""
if "" == src:
sh.ip("route", "add", dest, "dev", dev)
elif "default" == dest:
if dev:
sh.ip("route", "add", dest, "dev", dev, "via", src)
else:
sh.ip("route", "add", dest, "via", src)
else:
sh.ip("route", "add", dest, "dev", dev, "proto", "kernel", "scope",
"link", "src", src)
def show():
"""List all routing rules.
Returns:
A list of dict for each routing rule.
[
{"dest": "",
"src": "",
"dev": ""},
{"default": "",
"dev": ""}
]
"""
rules = []
routes = sh.ip("route", "show")
for route in routes:
rule = dict()
route = route.split()
if "default" == route[0]:
rule["default"] = ""
if "via" in route:
rule["default"] = route[route.index("via")+1]
rule["dev"] = route[route.index("dev")+1]
else:
rule["dest"] = route[0]
rule["dev"] = route[route.index("dev")+1]
if "src" in route:
src = route.index("src")
elif "via" in route:
src = route.index("via")
else:
src = -1
if -1 != src:
rule["src"] = route[src+1]
rules.append(rule)
return rules
def tearDown(self):
# Create a network namespace
ns = ip("netns", "show", self.pid)
if ns and (str(self.pid) in ns.stdout):
try:
ip("netns", "delete", self.pid)
except (ErrorReturnCode, ErrorReturnCode_1) as e:
print "Didn't delete ns: %s" % e
try:
os.remove("/var/run/netns/%s" % self.pid)
except OSError:
pass
# Wipe all cali interfaces
regex = r'((?:cali)[0-9a-f]+):'
interface_names = re.findall(regex, ip('link').stdout)
for interface in interface_names:
ip('link', 'del', 'dev', interface)
def tearDown(self):
# Create a network namespace
ns = ip("netns", "show", self.pid)
if ns and (str(self.pid) in ns.stdout):
try:
ip("netns", "delete", self.pid)
except (ErrorReturnCode, ErrorReturnCode_1) as e:
print "Didn't delete ns: %s" % e
try:
os.remove("/var/run/netns/%s" % self.pid)
except OSError:
pass
# Wipe all cali interfaces
regex = r'((?:cali)[0-9a-f]+):'
interface_names = re.findall(regex, ip('link').stdout)
for interface in interface_names:
ip('link', 'del', 'dev', interface)
def ifconfig(iface, dhcpc, ip="", netmask="24", gateway="", script=None):
"""Set the interface to static IP or dynamic IP (by dhcpclient).
Args:
iface: interface name.
dhcpc: True for using dynamic IP and False for static.
ip: IP address for static IP
netmask:
gateway:
Raises:
ValueError
"""
# TODO(aeluin) catch the exception?
# Check if interface exist
try:
sh.ip("addr", "show", iface)
except sh.ErrorReturnCode_1:
raise ValueError("Device \"%s\" does not exist." % iface)
except Exception:
raise ValueError("Unknown error for \"%s\"." % iface)
# Disable the dhcp client and flush interface
dhclient(iface, False)
try:
sh.ip("-4", "addr", "flush", "label", iface)
except Exception:
raise ValueError("Unknown error for \"%s\"." % iface)
if dhcpc:
dhclient(iface, True, script)
else:
if ip:
net = ipcalc.Network("%s/%s" % (ip, netmask))
sh.ip("addr", "add", "%s/%s" % (ip, net.netmask()), "broadcast",
net.broadcast(), "dev", iface)
def ifconfig(iface, dhcpc, ip="", netmask="24", gateway="", script=None):
"""Set the interface to static IP or dynamic IP (by dhcpclient).
Args:
iface: interface name.
dhcpc: True for using dynamic IP and False for static.
ip: IP address for static IP
netmask:
gateway:
Raises:
ValueError
"""
# TODO(aeluin) catch the exception?
# Check if interface exist
try:
sh.ip("addr", "show", iface)
except sh.ErrorReturnCode_1:
raise ValueError("Device \"%s\" does not exist." % iface)
except:
raise ValueError("Unknown error for \"%s\"." % iface)
# Disable the dhcp client and flush interface
dhclient(iface, False)
try:
sh.ip("-4", "addr", "flush", "label", iface)
except:
raise ValueError("Unknown error for \"%s\"." % iface)
if dhcpc:
dhclient(iface, True, script)
else:
if ip:
net = ipcalc.Network("%s/%s" % (ip, netmask))
sh.ip("addr", "add", "%s/%s" % (ip, net.netmask()), "broadcast",
net.broadcast(), "dev", iface)
#!/usr/bin/env python
import os
import sys
import re
from sh import ip
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "yads.settings")
primary_ip = re.sub(r'(?s).*? src\s(.*?)\s.*', r'\1',
str(ip("route", "get", "8.8.8.8")))
if not primary_ip:
primary_ip = "127.0.0.1"
os.environ['DJANGO_LIVE_TEST_SERVER_ADDRESS'] = primary_ip + ':15000-16000'
from django.core.management import execute_from_command_line
execute_from_command_line(sys.argv)
if option == "nslookup":
print(Fore.YELLOW + "enter the website to nslookup: ")
webar = raw_input()
print bada.nslookup(webar)
elif option == "whois":
print(Fore.YELLOW + "Enter the website to find its public data: ")
whois_ar = raw_input()
print bada.whois(whois_ar)
elif option == "ip":
print(Fore.YELLOW + "Finding your system ip address ")
print bada.ip("addr")
elif option == "dig":
print(Fore.YELLOW + "enter the website to find its DNS servers ......")
dig_ar = raw_input()
print bada.dig(dig_ar)
elif option == "nmcli":
print(Fore.YELLOW +
"To check the information about your connection ..............")
print bada.nmcli.dev.wifi()
elif option == "scan":
print(
Fore.YELLOW +
import threading
from http.server import HTTPServer
import socket
import logging as log
import atexit
# get_ip_address
from sh import ip, awk, cut
import prometheus_client
import consul
# Do not use addr and remove the address option from the register function
# if you are running this on a regular instance with a local Consul agent
addr = cut(awk(ip("addr", "show", "dev", "eth0"), "/inet / { print $2 }"), "-d/", "-f1").strip()
print(addr)
# consul should be a hostname that is accessible from the clever app container
c = consul.Consul(host="consul")
def deregister_id(service_id):
def dereg():
c.agent.service.deregister(service_id)
return dereg
def start_prometheus_server(name, port_range):
for port in range(*port_range):
try:
httpd = HTTPServer(("0.0.0.0", port), prometheus_client.MetricsHandler)
except (OSError, socket.error):
# Python 2 raises socket.error, in Python 3 socket.error is an
def ip_a():
out: sh.RunningCommand = sh.ip('--json', 'a')
doc = json.loads(out.stdout)
return doc
from sh import ifconfig
from sh import ip
import base64
import json
import socket
import struct
GATD_HOST = 'inductor.eecs.umich.edu'
GATD_PORT = 16284
#Create a tun device and setup the configuration to it
tun = pytun.TunTapDevice(name='ipv6gatd')
ifconfig(tun.name, 'up')
ifconfig(tun.name, 'mtu', '1280')
ip('-6', 'route', 'add', '2001:470:1f10:1320::2/128', 'dev', tun.name)
# Parameters for the ipv4 connection to gatd
gatdsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
gatdaddr = (GATD_HOST, GATD_PORT)
# Loop waiting for packets to get routed to this tun interface, strip them,
# and send the import bits back to gatd
while True:
buf = tun.read(1280)
pkt = dpkt.ip6.IP6(buf[4:])
if type(pkt.data) != dpkt.udp.UDP:
continue
gatdpkt = {}
def show():
"""
List routing rules
Returns:
A list of dict of each routing rule.
[
...,
{
"dest": "192.168.4.0/24",
"dev": "eth1",
"src": "192.168.4.254"
},
{
"default": "10.94.87.78",
"dev": "wwan0",
"weight": 1,
"priority": 1
},
{
"default": "10.144.7.254",
"dev": "eth0",
"weight": 1,
"priority": 2
}
]
"""
rules = []
"""
ip route show
default
nexthop via 10.94.87.78 dev wwan0 weight 1
nexthop via 10.144.7.254 dev eth0 weight 1
10.94.87.76/30 dev wwan0 proto kernel scope link src 10.94.87.77
10.144.4.0/22 dev eth0 proto kernel scope link src 10.144.4.80
192.168.4.0/24 dev eth1 proto kernel scope link src 192.168.4.127
"""
routes = sh.ip("route", "show")
nexthop_priority = 1
for route in routes:
rule = {}
spec = route.split()
if "default" in route:
if "via" in spec:
rule["default"] = spec[spec.index("via") + 1]
if "dev" in spec:
rule["dev"] = spec[spec.index("dev") + 1]
elif "nexthop" in route:
rule["default"] = spec[spec.index("via") + 1]
rule["dev"] = spec[spec.index("dev") + 1]
rule["weight"] = int(spec[spec.index("weight") + 1])
rule["priority"] = nexthop_priority
nexthop_priority += 1
else:
rule["dest"] = spec[0]
if "dev" in spec:
rule["dev"] = spec[spec.index("dev") + 1]
if "src" in spec:
src_idx = spec.index("src")
elif "via" in spec:
src_idx = spec.index("via")
else:
src_idx = -1
if -1 != src_idx:
rule["src"] = spec[src_idx + 1]
# empty dict
if len(rule) == 0:
continue
rules.append(rule)
return rules
def get_ip_by_interface(iface):
ip = sh.awk(
sh.grep(sh.grep(sh.ip("addr", "show", iface), "inet"), "-v", "inet6"),
"{print $2}").split("/")[0]
return ip
def get_default_v6_route_device():
ip_ro_output = sh.ip('-6', 'ro')
device = _default_route_parse(ip_ro_output)
return device
def setup_networking(ob_num: int):
"""Sets up networking.
Installs some debs manually that are required for configuring networking,
since we don't yet have networking and can't apt install them. Then configures
DNS and network interfaces, then bounces the network interfaces.
"""
print(" === Setting up networking === ")
# Install network management packages manually via dpkg, since we can't apt
# install them without networking already setup.
print("Installing dependencies for setting up networking...")
dpkg("-i", *glob("./*.deb"))
print("Configuring resolved...")
# Default to the Mikrotik router for DNS, with a fallback of Google's DNS
sed("-i", "s/^#DNS=$/DNS=172.27.31.254 8.8.8.8/g",
"/etc/systemd/resolved.conf")
sed("-i", "s/^#FallbackDNS=$/FallbackDNS=8.8.8.8 8.8.4.4/g",
"/etc/systemd/resolved.conf")
systemctl("restart", "systemd-resolved")
# Not sure if still used, but some things might be expecting orange boxen to
# have this configuration file.
with open("/etc/orange-box.conf", "w") as f:
f.writelines([f"orangebox_number={ob_num}"])
# Disable the external ethernet port (en*) and use both of the internal
# ones (enx*). The enx* interfaces map to vlan1 and vlan2, which in turn
# get mapped to `172.27.{orange box #}.X` and `172.27.{orange box # + 2}.X`,
# respectively. They are both bridged to the wireless network that the
# orange box is connected to, hence not needing en* connected.
print("Writing network configuration...")
interfaces = list(
sorted(
Path(iface).name for iface in glob("/sys/class/net/*")
if Path(iface).name.startswith("en")))
internal_ips = [f"172.27.{ob_num}.1", f"172.27.{ob_num + 2}.1"]
gateway_ips = [f"172.27.{ob_num + 1}.254", f"172.27.{ob_num + 3}.254"]
sh.ip("addr", "flush", "dev", interfaces[1])
sh.ifconfig(interfaces[1], f"{internal_ips[1]}/23")
systemctl("stop", "NetworkManager")
systemctl("disable", "NetworkManager")
with open("/etc/network/interfaces", "w") as f:
f.write(
textwrap.dedent(f"""
# These are generated by orange-box build scripts
auto lo
iface lo inet loopback
auto {interfaces[0]}
iface {interfaces[0]} inet manual
auto {interfaces[1]}
iface {interfaces[1]} inet manual
auto {interfaces[2]}
iface {interfaces[2]} inet manual
auto br0
iface br0 inet static
address {internal_ips[0]}
netmask 255.255.254.0
gateway {gateway_ips[0]}
dns-nameservers {internal_ips[0]} {gateway_ips[0]}
bridge_ports {interfaces[1]}
bridge_stp off
bridge_fd 0
bridge_maxwait 0
auto br1
iface br1 inet static
address {internal_ips[1]}
netmask 255.255.254.0
bridge_ports {interfaces[2]}
bridge_stp off
bridge_fd 0
bridge_maxwait 0"""))
print("Restarting network interfaces...")
bridges = ["br0", "br1"]
# Take down all of the interfaces
for iface in interfaces + bridges:
sh.ifdown("--force", iface)
# Bring up all interfaces except enp*
for iface in interfaces[1:] + bridges:
sh.ifup("--force", iface)
print("Waiting for network to come up...")
for _ in range(60):
try:
ping("-c1", "8.8.8.8")
break
except sh.ErrorReturnCode_1:
print(" - Still waiting for 8.8.8.8...")
else:
print("Waited too long for network to come up.")
print("Please fix the network.")
sys.exit(1)
print("Waiting for DNS to come up...")
for _ in range(60):
try:
ping("-c1", "launchpad.net")
break
except (sh.ErrorReturnCode_1, sh.ErrorReturnCode_2):
print(" - Still waiting for launchpad.net...")
else:
print("Waited too long for DNS to come up.")
print("Please fix the DNS.")
sys.exit(1)