def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
utils.backup_file('/etc/hostname')
hostname = utils.get_hostname()
with open('/etc/hostname', 'w') as hostnamefile:
print(hostname, file=hostnamefile)
p = Popen(['hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname: hostname')
# setup interface files
self._setup_loopback()
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
p = Popen(['ifdown', ifname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
p = Popen(['ifup', ifname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_interface(self, ifname, iface):
utils.backup_file('/etc/sysconfig/network/ifcfg-{0}'.format(ifname))
with open('/etc/sysconfig/network/ifcfg-{0}'.format(ifname), 'w') as iffile:
print('# Label {0}'.format(iface['label']), file=iffile)
print('BOOTPROTO=static', file=iffile)
ifnum = None
for x in iface['ips']:
if ifnum is None:
print('IPADDR={0}'.format(x['ip']), file=iffile)
print('NETMASK={0}'.format(x['netmask']), file=iffile)
ifnum = 0
else:
print('IPADDR_{0}={1}'.format(ifnum, x['ip']), file=iffile)
print('NETMASK_{0}={1}'.format(ifnum, x['netmask']), file=iffile)
print('LABEL_{0}={0}'.format(ifnum), file=iffile)
ifnum += 1
if 'ip6s' in iface and iface['ip6s']:
for x in iface['ip6s']:
if ifnum is None:
print('IPADDR={0}'.format(x['ip']), file=iffile)
print('PREFIXLEN_{0}={1}'.format(ifnum, x['netmask']), file=iffile)
ifnum = 0
else:
print('IPADDR_{0}={1}'.format(ifnum, x['ip']), file=iffile)
print('PREFIXLEN_{0}={1}'.format(ifnum, x['netmask']), file=iffile)
print('LABEL_{0}={0}'.format(ifnum), file=iffile)
ifnum += 1
print("STARTMODE='auto'", file=iffile)
print("USERCONTROL='no'", file=iffile)
def _setup_interface(self, ifname, iface):
addrs = []
addrs.extend(['{0}/{1}'.format(x['ip'], utils.netmask_to_prefix(x['netmask'])) for x in iface['ips']])
if 'ip6s' in iface and iface['ip6s']:
addrs.extend(['{ip}/{netmask}'.format(**x) for x in iface['ip6s']])
routes = []
gateways = []
if 'gateway' in iface and iface['gateway']:
gateways.append(iface['gateway'])
if 'gateway_v6' in iface and iface['gateway_v6']:
gateways.append(iface['gateway_v6'])
if 'routes' in iface and iface['routes']:
for route in iface['routes']:
route['length'] = utils.netmask_to_prefix(route['netmask'])
routes.append(route)
utils.backup_file('/etc/systemd/network/{0}.network'.format(ifname))
with open('/etc/systemd/network/{0}.network'.format(ifname), 'w') as iffile:
print('# Label {0}'.format(iface['label']), file=iffile)
print('[Match]\nName={0}\n'.format(ifname), file=iffile)
print('[Network]', file=iffile)
for x in addrs:
print('Address={0}'.format(x), file=iffile)
for x in gateways:
print('Gateway={0}'.format(x), file=iffile)
if 'dns' in iface and iface['dns']:
print('DNS={0}'.format(' '.join(iface['dns'])), file=iffile)
for x in routes:
print('\n[Route]\nGateway={gateway}\nDestination={route}/{length}'.format(**route), file=iffile)
def _setup_hostname(self, client):
"""
hostnamectl is available in some Debian systems and depends on dbus
"""
hostname = utils.get_hostname(client)
completed = False
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file(self.hostname_file)
p = Popen(['hostnamectl', 'set-hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
log.error('Error using hostnamectl: {0}'.format(err))
else:
# Do not run hostname since it was successful
completed = True
if not completed:
p = Popen(['hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
log.error('Error using hostname: {0}'.format(err))
return p.returncode
def _setup_interface(self, ifname, iface):
utils.backup_file(
'/etc/syscfongi/network-scripts/ifcfg-{0}'.format(ifname))
with open('/etc/sysconfig/network-scripts/ifcfg-{0}'.format(ifname),
'w') as iffile:
print('# Label {0}'.format(iface['label']), file=iffile)
print('BOOTPROTO=static', file=iffile)
print('DEVICE={0}'.format(ifname), file=iffile)
for count, x in enumerate(iface['ips']):
if count == 0:
print('IPADDR={0}'.format(x['ip']), file=iffile)
print('NETMASK={0}'.format(x['netmask']), file=iffile)
else:
print('IPADDR{0}={1}'.format(count, x['ip']), file=iffile)
print('NETMASK{0}={1}'.format(count, x['netmask']),
file=iffile)
if 'gateway' in iface and iface['gateway']:
print('GATEWAY={0}'.format(iface['gateway']), file=iffile)
if 'ip6s' in iface and iface['ip6s']:
print('IPV6INIT=yes', file=iffile)
for count, x in enumerate(iface['ip6s']):
if count == 0:
print('IPV6ADDR={ip}/{netmask}'.format(**x),
file=iffile)
else:
print('IPV6ADDR{0}={ip}/{netmask}'.format(count, **x),
file=iffile)
print('IPV6_DEFAULTGW={0}%{1}'.format(iface['gateway_v6'],
ifname),
file=iffile)
if 'dns' in iface and iface['dns']:
for count, dns in enumerate(iface['dns']):
print("DNS{0}={1}".format(count + 1, dns), file=iffile)
print('ONBOOT=yes', file=iffile)
print('NM_CONTROLLED=no', file=iffile)
def _setup_routes(self, ifname, iface):
route_file = '{0}/{1}-{2}'.format(
self.netconfig_dir,
self.route_file_prefix,
ifname
)
utils.backup_file(route_file)
with open(route_file, 'w') as routefile:
for count, route in enumerate(iface['routes']):
routefile.write(
'ADDRESS{0}={1}\n'.format(
count,
route['route']
)
)
routefile.write(
'NETMASK{0}={1}\n'.format(
count,
route['netmask']
)
)
routefile.write(
'GATEWAY{0}={1}\n'.format(
count,
route['gateway']
)
)
def _setup_interface(self, ifname, iface):
utils.backup_file('/etc/syscfongi/network-scripts/ifcfg-{0}'.format(ifname))
with open('/etc/sysconfig/network-scripts/ifcfg-{0}'.format(ifname), 'w') as iffile:
print('# Label {0}'.format(iface['label']), file=iffile)
print('BOOTPROTO=static', file=iffile)
print('DEVICE={0}'.format(ifname), file=iffile)
for count, x in enumerate(iface['ips']):
if count == 0:
print('IPADDR={0}'.format(x['ip']), file=iffile)
print('NETMASK={0}'.format(x['netmask']), file=iffile)
else:
print('IPADDR{0}={1}'.format(count, x['ip']), file=iffile)
print('NETMASK{0}={1}'.format(count, x['netmask']), file=iffile)
if 'gateway' in iface and iface['gateway']:
print('GATEWAY={0}'.format(iface['gateway']), file=iffile)
if 'ip6s' in iface and iface['ip6s']:
print('IPV6INIT=yes', file=iffile)
for count, x in enumerate(iface['ip6s']):
if count == 0:
print('IPV6ADDR={ip}/{netmask}'.format(**x), file=iffile)
else:
print('IPV6ADDR{0}={ip}/{netmask}'.format(count, **x), file=iffile)
print('IPV6_DEFAULTGW={0}%{1}'.format(iface['gateway_v6'], ifname), file=iffile)
if 'dns' in iface and iface['dns']:
for count, dns in enumerate(iface['dns']):
print("DNS{0}={1}".format(count + 1, dns), file=iffile)
print('ONBOOT=yes', file=iffile)
print('NM_CONTROLLED=no', file=iffile)
def _setup_hostname(self, client):
hostname = utils.get_hostname(client)
completed = False
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file(self.hostname_file)
p = Popen(
['hostnamectl', 'set-hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE
)
out, err = p.communicate()
if p.returncode != 0:
log.error('Error using hostnamectl: {0}'.format(err))
else:
# Do not run hostname since hostnamectl was successful
completed = True
if not completed:
log.debug('Falling back to use hostname command')
p = Popen(
['hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE
)
out, err = p.communicate()
if p.returncode != 0:
log.error('Error using hostname: {0}'.format(err))
else:
log.debug('Writing file {0}'.format(self.hostname_file))
with open(self.hostname_file, 'w') as host_file:
host_file.write(hostname)
return p.returncode, hostname
def _setup_loopback(self):
utils.backup_file('/etc/network/interfaces')
with open('/etc/network/interfaces', 'w') as iffile:
print(('# The loopback network interface\n'
'auto lo\n'
'iface lo inet loopback\n\n'),
file=iffile)
def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
utils.backup_file('/etc/hostname')
hostname = utils.get_hostname()
p = Popen(['hostnamectl', 'set-hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
# setup interface files
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
p = Popen(['netctl', 'restart', ifname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_loopback(self):
utils.backup_file('/etc/network/interfaces')
with open('/etc/network/interfaces', 'w') as iffile:
print((
'# The loopback network interface\n'
'auto lo\n'
'iface lo inet loopback\n\n'
), file=iffile)
def _setup_routes(self, ifname, iface):
utils.backup_file('/etc/syscfongi/network-scripts/route-{0}'.format(ifname))
with open('/etc/sysconfig/network-scripts/route-{0}'.format(ifname), 'w') as routefile:
for count, route in enumerate(iface['routes']):
print((
'ADDRESS{0}={route}\n'
'NETMASK{0}={netmask}\n'
'GATEWAY{0}={gateway}\n'
).format(count, **route), file=routefile)
def test_rename_interface_file_success(self):
rename_file = '/tmp/ifcfg-eth0'
utils.backup_file(rename_file)
files = glob.glob('/tmp/ifcfg-eth0.*.*.bak')
self.assertEqual(len(files), 1, 'Did not find any files')
self.assertIn(
'ifcfg-eth0', files[0],
'Did not find the original filename in renamed file path')
def resetnetwork(self, name, value, client):
ifaces = {}
hostname_return_code, _ = self._setup_hostname(client)
if hostname_return_code != 0:
log.error('Error setting hostname on system')
xen_macs = utils.list_xenstore_macaddrs(client)
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac, client)
# Backup original configuration file
utils.backup_file(self.netconfig_file)
# Setup interfaces file
self._setup_loopback()
for ifname, iface in ifaces.items():
self._setup_interfaces(ifname, iface)
# Loop through the interfaces and restart networking
for ifname in ifaces.keys():
p = Popen(['ifdown', ifname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode),
'Error stopping network: {0}'.format(ifname))
"""
In some cases interfaces may retain old IP addresses especially
when building from a custom image. To prevent that we will do a
flush of the interface before bringing it back up.
Refer to bug:
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1584682
"""
p = Popen(['ip', 'addr', 'flush', 'dev', ifname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode),
'Error flushing network: {0}'.format(ifname))
# Sleep for one second
time.sleep(1)
p = Popen(['ifup', ifname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
log.error('Error received on network restart: {0}'.format(err))
return (str(p.returncode),
'Error starting network: {0}'.format(ifname))
return ('0', '')
def _setup_routes(self, ifname, iface):
utils.backup_file(
'/etc/syscfongi/network-scripts/route-{0}'.format(ifname))
with open('/etc/sysconfig/network-scripts/route-{0}'.format(ifname),
'w') as routefile:
for count, route in enumerate(iface['routes']):
print(('ADDRESS{0}={route}\n'
'NETMASK{0}={netmask}\n'
'GATEWAY{0}={gateway}\n').format(count, **route),
file=routefile)
def _setup_dns(self, dns):
utils.backup_file("/etc/resolvconf/resolv.conf.d/base")
with open("/etc/resolvconf/resolv.conf.d/base", "w") as iffile:
for d in dns:
print("nameserver {0}".format(d), file=iffile)
if not os.path.exists("/run/resolvconf"):
os.mkdir("/run/resolvconf")
shutil.copy("/etc/resolvconf/resolv.conf.d/base", "/run/resolvconf/resolv.conf")
if not os.path.exists("/etc/resolv.conf") or os.readlink("/etc/resolv.conf") != "/run/resolvconf/resolv.conf":
os.symlink("/run/resolvconf/resolv.conf", "/etc/resolv.conf")
def _setup_routes(self, ifname, iface):
utils.backup_file('/etc/sysconfig/network/ifroute-{0}'.format(ifname))
with open('/etc/sysconfig/network/ifroute-{0}'.format(ifname), 'w') as routefile:
print('# Label {0}'.format(iface['label']), file=routefile)
if 'gateway' in iface and iface['gateway']:
print('default {0} - -'.format(iface['gateway']), file=routefile)
if 'gateway_v6' in iface and iface['gateway_v6']:
print('default {0} - -'.format(iface['gateway_v6']), file=routefile)
if 'routes' in iface and iface['routes']:
for route in iface['routes']:
print('{route} {gateway} {netmask} {0}'.format(ifname, **route), file=routefile)
def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
utils.backup_file('/etc/sysconfig/network')
hostname = utils.get_hostname()
with open('/etc/sysconfig/network', 'w') as netfile:
print('NETWORKING=yes', file=netfile)
print('NOZEROCONF=yes', file=netfile)
print('NETWORKING_IPV6=yes', file=netfile)
print('HOSTNAME={0}'.format(hostname), file=netfile)
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file('/etc/hostname')
p = Popen(['hostnamectl', 'set-hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
else:
p = Popen(['hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
# setup interface files
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
if 'routes' in iface:
self._setup_routes(ifname, iface)
p = Popen(['service', 'network', 'stop'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
p = Popen(['service', 'network', 'start'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_dns(self, dns):
utils.backup_file('/etc/resolvconf/resolv.conf.d/base')
with open('/etc/resolvconf/resolv.conf.d/base', 'w') as iffile:
for d in dns:
print('nameserver {0}'.format(d), file=iffile)
if not os.path.exists('/run/resolvconf'):
os.mkdir('/run/resolvconf')
shutil.copy('/etc/resolvconf/resolv.conf.d/base',
'/run/resolvconf/resolv.conf')
if not os.path.exists('/etc/resolv.conf') or os.readlink(
'/etc/resolv.conf') != '/run/resolvconf/resolv.conf':
os.symlink('/run/resolvconf/resolv.conf', '/etc/resolv.conf')
def _setup_interface(self, ifname, iface):
interface_file = '{0}/{1}-{2}'.format(self.netconfig_dir,
self.interface_file_prefix,
ifname)
# Check and see if there are extra arguments in ifcfg file
extra_args = self._check_for_extra_settings(interface_file)
# Backup the interface file
utils.backup_file(interface_file)
with open(interface_file, 'w') as iffile:
iffile.write('# Automatically generated, do not edit\n\n')
iffile.write('# Label {0}\n'.format(iface['label']))
iffile.write('BOOTPROTO=static\n')
iffile.write('DEVICE={0}\n'.format(ifname))
for count, ip_info in enumerate(iface['ips']):
if count == 0:
iffile.write('IPADDR={0}\n'.format(ip_info['ip']))
iffile.write('NETMASK={0}\n'.format(ip_info['netmask']))
else:
iffile.write('IPADDR{0}={1}\n'.format(
count, ip_info['ip']))
iffile.write('NETMASK{0}={1}\n'.format(
count, ip_info['netmask']))
if iface.get('gateway'):
iffile.write('GATEWAY={0}\n'.format(iface['gateway']))
if iface.get('ip6s'):
iffile.write('IPV6INIT=yes\n')
for count, ip6_info in enumerate(iface['ip6s']):
if count == 0:
iffile.write('IPV6ADDR={0}/{1}\n'.format(
ip6_info['ip'], ip6_info['netmask']))
else:
iffile.write('IPV6ADDR{0}={1}/{2}\n'.format(
count, ip6_info['ip'], ip6_info['netmask']))
iffile.write('IPV6_DEFAULTGW={0}%{1}\n'.format(
iface['gateway_v6'], ifname))
if iface.get('dns'):
for count, dns in enumerate(iface['dns']):
iffile.write('DNS{0}={1}\n'.format(count + 1, dns))
iffile.write('ONBOOT=yes\n')
if not self.use_network_manager:
iffile.write('NM_CONTROLLED=no\n')
if len(extra_args) > 0:
for argument in extra_args:
iffile.write('{0}\n'.format(argument))
def resetnetwork(self, name, value, client):
ifaces = {}
hostname_return_code, hostname = self._setup_hostname(client)
if hostname_return_code != 0:
return (str(hostname_return_code), 'Error setting hostname')
xen_macs = utils.list_xenstore_macaddrs(client)
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac, client)
utils.backup_file(self.network_file)
with open(self.network_file, 'w') as netfile:
netfile.write('NETWORKING=yes\n')
netfile.write('NOZEROCONF=yes\n')
netfile.write('NETWORKING_IPV6=yes\n')
netfile.write('HOSTNAME={0}\n'.format(hostname))
# move unused interface files out of the way but back them up
move_files = utils.get_ifcfg_files_to_remove(
self.netconfig_dir, '{0}-'.format(self.interface_file_prefix))
for interface_config in move_files:
utils.move_file(interface_config)
# setup interface files
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
if 'routes' in iface:
self._setup_routes(ifname, iface)
if os.path.exists('/usr/bin/systemctl'):
p = Popen(['systemctl', 'restart', 'network.service'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
else:
p = Popen(['service', 'network', 'restart'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _write_file(filename, data):
# Get permissions from existing file if it exists
permission, owner, group = _get_file_permissions(filename)
dirname = os.path.dirname(filename)
if not os.path.exists(dirname):
os.makedirs(dirname)
"""
Create temporary file in the directory we want to place the file into
https://docs.python.org/2/library/tempfile.html
From the documentation: There are no race conditions in the file's
creation, assuming that the platform properly implements the os.O_EXCL
flag for os.open(). The file is readable and writable only by the
creating user ID.
"""
fd, temp_path = mkstemp(dir=dirname, text=True)
try:
"""
Set the ownership for the file. If it fails owner/group will be
root as that is what nova-agent runs under
"""
os.fchown(fd, owner, group)
except Exception:
pass
try:
os.fchmod(fd, permission)
except Exception:
# If existing file is not found, then set permissions to default 600
os.fchmod(fd, stat.S_IRUSR | stat.S_IWUSR)
# Write data to file after all the permissions are set on the temp file
try:
os.write(fd, data)
except TypeError:
# Python 3 expects bytes so convert and then write to file
os.write(fd, encode_to_bytes(data))
os.close(fd)
# Check for existence of file and back the original up
if os.path.exists(filename):
backup_file(filename)
# Rename the temp file and put in place
os.rename(temp_path, filename)
def _setup_hostname(self, client):
hostname = utils.get_hostname(client)
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file(self.hostname_file)
p = Popen(['hostnamectl', 'set-hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
else:
p = Popen(['hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
return p.returncode, hostname
def _setup_interface(self, ifname, iface):
interface_file = '{0}/{1}-{2}'.format(self.netconfig_dir,
self.interface_file_prefix,
ifname)
utils.backup_file(interface_file)
with open(interface_file, 'w') as iffile:
iffile.write('# Automatically generated, do not edit\n\n')
iffile.write('# Label {0}\n'.format(iface['label']))
iffile.write('BOOTPROTO=static\n')
iffile.write('DEVICE={0}\n'.format(ifname))
for count, ip_info in enumerate(iface['ips']):
if count == 0:
iffile.write('IPADDR={0}\n'.format(ip_info['ip']))
iffile.write('NETMASK={0}\n'.format(ip_info['netmask']))
else:
iffile.write('IPADDR{0}={1}\n'.format(
count, ip_info['ip']))
iffile.write('NETMASK{0}={1}\n'.format(
count, ip_info['netmask']))
if 'gateway' in iface and iface['gateway']:
iffile.write('GATEWAY={0}\n'.format(iface['gateway']))
if 'ip6s' in iface and iface['ip6s']:
iffile.write('IPV6INIT=yes\n')
for count, ip6_info in enumerate(iface['ip6s']):
if count == 0:
iffile.write('IPV6ADDR={0}/{1}\n'.format(
ip6_info['ip'], ip6_info['netmask']))
else:
iffile.write('IPV6ADDR{0}={1}/{2}\n'.format(
count, ip6_info['ip'], ip6_info['netmask']))
iffile.write('IPV6_DEFAULTGW={0}%{1}\n'.format(
iface['gateway_v6'], ifname))
if 'dns' in iface and iface['dns']:
for count, dns in enumerate(iface['dns']):
iffile.write('DNS{0}={1}\n'.format(count + 1, dns))
iffile.write('ONBOOT=yes\n')
iffile.write('NM_CONTROLLED=no\n')
def _setup_hostname(self, client):
"""
hostnamectl is available in some Debian systems and depends on dbus
"""
hostname = utils.get_hostname(client)
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file(self.hostname_file)
p = Popen(['hostnamectl', 'set-hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
else:
p = Popen(['hostname', hostname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
return p.returncode, hostname
def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
utils.backup_file('/etc/sysconfig/network')
hostname = utils.get_hostname()
with open('/etc/sysconfig/network', 'w') as netfile:
print('NETWORKING=yes', file=netfile)
print('NOZEROCONF=yes', file=netfile)
print('NETWORKING_IPV6=yes', file=netfile)
print('HOSTNAME={0}'.format(hostname), file=netfile)
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file('/etc/hostname')
p = Popen(['hostnamectl', 'set-hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
else:
p = Popen(['hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
# setup interface files
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
if 'routes' in iface:
self._setup_routes(ifname, iface)
p = Popen(['service', 'network', 'stop'], stdout=PIPE, stderr=PIPE, stdin=PIPE)
p = Popen(['service', 'network', 'start'], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_interface(self, ifname, iface):
utils.backup_file('/etc/netctl/{0}'.format(ifname))
with open('/etc/netctl/{0}'.format(ifname), 'w') as iffile:
print('# Label {0}'.format(iface['label']), file=iffile)
print('Connection=ethernet', file=iffile)
print('Interface={0}'.format(ifname), file=iffile)
print('IP=static', file=iffile)
addrs = ['{0}/{1}'.format(x['ip'], x['netmask']) for x in iface['ips']]
print("Address=('{0}')".format("' '".join(addrs)), file=iffile)
if 'gateway' in iface and iface['gateway']:
print('Gateway={0}'.format(iface['gateway']), file=iffile)
if 'routes' in iface and iface['routes']:
routes = ['{route}/{netmask} via {gateway}'.format(**x) for x in iface['routes']]
print("Routes=('{0}')".format("' '".join(routes)), file=iffile)
if 'ip6s' in iface and iface['ip6s']:
print('IP6=static', file=iffile)
addrs6 = ['{0}/{1}'.format(x['ip'], x['netmask']) for x in iface['ip6s']]
print("Address6=('{0}')".format("' '".join(addrs6)), file=iffile)
print('Gateway6={0}'.format(iface['gateway_v6']), file=iffile)
if 'dns' in iface and iface['dns']:
print("DNS=('{0}')".format("' '".join(iface['dns'])), file=iffile)
def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
utils.backup_file('/etc/hostname')
utils.backup_file('/etc/conf.d/hostname')
hostname = utils.get_hostname()
with open('/etc/hostname', 'w') as hostnamefile:
print(hostname, file=hostnamefile)
with open('/etc/conf.d/hostname', 'w') as hostnamefile:
print('HOSTNAME={0}'.format(hostname), file=hostnamefile)
p = Popen(['hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname: hostname')
# setup interface files
utils.backup_file('/etc/conf.d/net')
with open('/etc/conf.d/net', 'w') as iffile:
print('modules="iproute2"', file=iffile)
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
p = Popen(['/etc/init.d/net.{0}'.format(ifname), 'restart'], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_dns(self, ifname, iface):
if 'dns' not in iface:
return
newline = 'NETCONFIG_DNS_STATIC_SERVERS="{0}"\n'.format(' '.join(iface['dns']))
config = '/etc/sysconfig/network/config'
fh, abs_path = mkstemp()
nochange = False
with open(abs_path, 'w') as newfile:
with open(config) as conffile:
for line in conffile:
if re.search('^NETCONFIG_DNS_STATIC_SERVERS=', line):
if line == newline:
nochange = True
break
line = newline
newfile.write(line)
os.close(fh)
if nochange:
os.remove(abs_path)
else:
utils.backup_file(config)
os.remove(config)
move(abs_path, config)
def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
hostname = utils.get_hostname()
utils.backup_file('/etc/HOSTNAME')
with open('/etc/HOSTNAME', 'w') as hostfile:
print(hostname, file=hostfile)
if os.path.exists('/usr/bin/hostnamectl'):
utils.backup_file('/etc/hostname')
p = Popen(['hostnamectl', 'set-hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
else:
p = Popen(['hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname')
# setup interface files
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
self._setup_routes(ifname, iface)
self._setup_dns(ifname, iface)
p = Popen(['systemctl', 'restart', 'network.service'], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_interface(self, ifname, iface):
addrs = []
addrs.extend([
'{0}/{1}'.format(x['ip'], utils.netmask_to_prefix(x['netmask']))
for x in iface['ips']
])
if 'ip6s' in iface and iface['ip6s']:
addrs.extend(['{ip}/{netmask}'.format(**x) for x in iface['ip6s']])
routes = []
gateways = []
if 'gateway' in iface and iface['gateway']:
gateways.append(iface['gateway'])
if 'gateway_v6' in iface and iface['gateway_v6']:
gateways.append(iface['gateway_v6'])
if 'routes' in iface and iface['routes']:
for route in iface['routes']:
route['length'] = utils.netmask_to_prefix(route['netmask'])
routes.append(route)
utils.backup_file('/etc/systemd/network/{0}.network'.format(ifname))
with open('/etc/systemd/network/{0}.network'.format(ifname),
'w') as iffile:
print('# Label {0}'.format(iface['label']), file=iffile)
print('[Match]\nName={0}\n'.format(ifname), file=iffile)
print('[Network]', file=iffile)
for x in addrs:
print('Address={0}'.format(x), file=iffile)
for x in gateways:
print('Gateway={0}'.format(x), file=iffile)
if 'dns' in iface and iface['dns']:
print('DNS={0}'.format(' '.join(iface['dns'])), file=iffile)
for x in routes:
print(
'\n[Route]\nGateway={gateway}\nDestination={route}/{length}'
.format(**route),
file=iffile)
def resetnetwork(self, name, value):
ifaces = {}
xen_macs = utils.list_xenstore_macaddrs()
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac)
# set hostname
utils.backup_file('/etc/hostname')
utils.backup_file('/etc/conf.d/hostname')
hostname = utils.get_hostname()
with open('/etc/hostname', 'w') as hostnamefile:
print(hostname, file=hostnamefile)
with open('/etc/conf.d/hostname', 'w') as hostnamefile:
print('HOSTNAME={0}'.format(hostname), file=hostnamefile)
p = Popen(['hostname', hostname], stdout=PIPE, stderr=PIPE, stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error setting hostname: hostname')
# setup interface files
utils.backup_file('/etc/conf.d/net')
with open('/etc/conf.d/net', 'w') as iffile:
print('modules="iproute2"', file=iffile)
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
p = Popen(['/etc/init.d/net.{0}'.format(ifname), 'restart'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE)
out, err = p.communicate()
if p.returncode != 0:
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def test_backup_file_failure(self):
rename_file = '/tmp/ifcfg-eth0'
os.remove(rename_file)
utils.backup_file(rename_file)
assert True, 'Move interface did not generate error'
def _setup_hostname(self, hostname):
utils.backup_file('/etc/rc.conf.local')
with open('/etc/rc.conf.local', 'w') as iffile:
print('hostname={0}'.format(hostname), file=iffile)
def _setup_hostname(self, hostname):
utils.backup_file("/etc/rc.conf.local")
with open("/etc/rc.conf.local", "w") as iffile:
print("hostname={0}".format(hostname), file=iffile)
def resetnetwork(self, name, value, client):
ifaces = {}
hostname_return_code, hostname = self._setup_hostname(client)
if hostname_return_code != 0:
log.error(
'Error setting hostname: {0}'.format(hostname_return_code)
)
xen_macs = utils.list_xenstore_macaddrs(client)
for iface in utils.list_hw_interfaces():
mac = utils.get_hw_addr(iface)
if not mac or mac not in xen_macs:
continue
ifaces[iface] = utils.get_interface(mac, client)
utils.backup_file(self.network_file)
with open(self.network_file, 'w') as netfile:
netfile.write('NETWORKING=yes\n')
netfile.write('NOZEROCONF=yes\n')
netfile.write('NETWORKING_IPV6=yes\n')
netfile.write('HOSTNAME={0}\n'.format(hostname))
# move unused interface files out of the way but back them up
move_files = utils.get_ifcfg_files_to_remove(
self.netconfig_dir,
'{0}-'.format(self.interface_file_prefix)
)
for interface_config in move_files:
utils.backup_file(interface_config)
# setup interface files
for ifname, iface in ifaces.items():
self._setup_interface(ifname, iface)
if 'routes' in iface:
self._setup_routes(ifname, iface)
"""
Creating servers from custom images may leave IP information
from the image source. Flush the interface before restart of
the network to clear out source image IP information
"""
p = Popen(
['ip', 'addr', 'flush', 'dev', ifname],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE
)
out, err = p.communicate()
if p.returncode != 0:
# Log error and continue to restart network
log.error('Error flushing interface: {0}'.format(ifname))
if os.path.exists('/usr/bin/systemctl'):
p = Popen(
['systemctl', 'restart', 'network.service'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE
)
else:
p = Popen(
['service', 'network', 'restart'],
stdout=PIPE,
stderr=PIPE,
stdin=PIPE
)
out, err = p.communicate()
if p.returncode != 0:
log.error('Error received on network restart: {0}'.format(err))
return (str(p.returncode), 'Error restarting network')
return ('0', '')
def _setup_loopback(self):
utils.backup_file(self.netconfig_file)
with open(self.netconfig_file, 'w') as iffile:
iffile.write('# The loopback network interface\n')
iffile.write('auto lo\n')
iffile.write('iface lo inet loopback\n\n')