]>
git.proxmox.com Git - systemd.git/blob - test/networkd-test.py
2 # SPDX-License-Identifier: LGPL-2.1+
4 # networkd integration test
5 # This uses temporary configuration in /run and temporary veth devices, and
6 # does not write anything on disk or change any system configuration;
7 # but it assumes (and checks at the beginning) that networkd is not currently
10 # This can be run on a normal installation, in QEMU, nspawn (with
11 # --private-network), LXD (with "--config raw.lxc=lxc.aa_profile=unconfined"),
12 # or LXC system containers. You need at least the "ip" tool from the iproute
13 # package; it is recommended to install dnsmasq too to get full test coverage.
15 # ATTENTION: This uses the *installed* networkd, not the one from the built
18 # (C) 2015 Canonical Ltd.
19 # Author: Martin Pitt <martin.pitt@ubuntu.com>
21 # systemd is free software; you can redistribute it and/or modify it
22 # under the terms of the GNU Lesser General Public License as published by
23 # the Free Software Foundation; either version 2.1 of the License, or
24 # (at your option) any later version.
26 # systemd is distributed in the hope that it will be useful, but
27 # WITHOUT ANY WARRANTY; without even the implied warranty of
28 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
29 # Lesser General Public License for more details.
31 # You should have received a copy of the GNU Lesser General Public License
32 # along with systemd; If not, see <http://www.gnu.org/licenses/>.
44 HAVE_DNSMASQ
= shutil
.which('dnsmasq') is not None
46 NETWORK_UNITDIR
= '/run/systemd/network'
48 NETWORKD_WAIT_ONLINE
= shutil
.which('systemd-networkd-wait-online',
49 path
='/usr/lib/systemd:/lib/systemd')
51 RESOLV_CONF
= '/run/systemd/resolve/resolv.conf'
55 """Initialize the environment, and perform sanity checks on it."""
56 if NETWORKD_WAIT_ONLINE
is None:
57 raise OSError(errno
.ENOENT
, 'systemd-networkd-wait-online not found')
59 # Do not run any tests if the system is using networkd already.
60 if subprocess
.call(['systemctl', 'is-active', '--quiet',
61 'systemd-networkd.service']) == 0:
62 raise unittest
.SkipTest('networkd is already active')
64 # Avoid "Failed to open /dev/tty" errors in containers.
65 os
.environ
['SYSTEMD_LOG_TARGET'] = 'journal'
67 # Ensure the unit directory exists so tests can dump files into it.
68 os
.makedirs(NETWORK_UNITDIR
, exist_ok
=True)
71 class NetworkdTestingUtilities
:
72 """Provide a set of utility functions to facilitate networkd tests.
74 This class must be inherited along with unittest.TestCase to define
75 some required methods.
78 def add_veth_pair(self
, veth
, peer
, veth_options
=(), peer_options
=()):
79 """Add a veth interface pair, and queue them to be removed."""
80 subprocess
.check_call(['ip', 'link', 'add', 'name', veth
] +
82 ['type', 'veth', 'peer', 'name', peer
] +
84 self
.addCleanup(subprocess
.call
, ['ip', 'link', 'del', 'dev', peer
])
86 def write_network(self
, unit_name
, contents
):
87 """Write a network unit file, and queue it to be removed."""
88 unit_path
= os
.path
.join(NETWORK_UNITDIR
, unit_name
)
90 with
open(unit_path
, 'w') as unit
:
92 self
.addCleanup(os
.remove
, unit_path
)
94 def write_network_dropin(self
, unit_name
, dropin_name
, contents
):
95 """Write a network unit drop-in, and queue it to be removed."""
96 dropin_dir
= os
.path
.join(NETWORK_UNITDIR
, "%s.d" % unit_name
)
97 dropin_path
= os
.path
.join(dropin_dir
, "%s.conf" % dropin_name
)
99 os
.makedirs(dropin_dir
, exist_ok
=True)
100 self
.addCleanup(os
.rmdir
, dropin_dir
)
101 with
open(dropin_path
, 'w') as dropin
:
102 dropin
.write(contents
)
103 self
.addCleanup(os
.remove
, dropin_path
)
105 def read_attr(self
, link
, attribute
):
106 """Read a link attributed from the sysfs."""
107 # Note we we don't want to check if interface `link' is managed, we
108 # want to evaluate link variable and pass the value of the link to
109 # assert_link_states e.g. eth0=managed.
110 self
.assert_link_states(**{link
:'managed'})
111 with
open(os
.path
.join('/sys/class/net', link
, attribute
)) as f
:
112 return f
.readline().strip()
114 def assert_link_states(self
, **kwargs
):
115 """Match networkctl link states to the given ones.
117 Each keyword argument should be the name of a network interface
118 with its expected value of the "SETUP" column in output from
119 networkctl. The interfaces have five seconds to come online
120 before the check is performed. Every specified interface must
121 be present in the output, and any other interfaces found in the
124 A special interface state "managed" is supported, which matches
125 any value in the "SETUP" column other than "unmanaged".
129 interfaces
= set(kwargs
)
131 # Wait for the requested interfaces, but don't fail for them.
132 subprocess
.call([NETWORKD_WAIT_ONLINE
, '--timeout=5'] +
133 ['--interface=%s' % iface
for iface
in kwargs
])
135 # Validate each link state found in the networkctl output.
136 out
= subprocess
.check_output(['networkctl', '--no-legend']).rstrip()
137 for line
in out
.decode('utf-8').split('\n'):
138 fields
= line
.split()
139 if len(fields
) >= 5 and fields
[1] in kwargs
:
141 expected
= kwargs
[iface
]
143 if (actual
!= expected
and
144 not (expected
== 'managed' and actual
!= 'unmanaged')):
145 self
.fail("Link %s expects state %s, found %s" %
146 (iface
, expected
, actual
))
147 interfaces
.remove(iface
)
149 # Ensure that all requested interfaces have been covered.
151 self
.fail("Missing links in status output: %s" % interfaces
)
154 class BridgeTest(NetworkdTestingUtilities
, unittest
.TestCase
):
155 """Provide common methods for testing networkd against servers."""
158 self
.write_network('port1.netdev', '''\
162 MACAddress=12:34:56:78:9a:bc''')
163 self
.write_network('port2.netdev', '''\
167 MACAddress=12:34:56:78:9a:bd''')
168 self
.write_network('mybridge.netdev', '''\
172 self
.write_network('port1.network', '''\
177 self
.write_network('port2.network', '''\
182 self
.write_network('mybridge.network', '''\
187 Address=192.168.250.33/24
188 Gateway=192.168.250.1''')
189 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
192 subprocess
.check_call(['systemctl', 'stop', 'systemd-networkd'])
193 subprocess
.check_call(['ip', 'link', 'del', 'mybridge'])
194 subprocess
.check_call(['ip', 'link', 'del', 'port1'])
195 subprocess
.check_call(['ip', 'link', 'del', 'port2'])
197 def test_bridge_init(self
):
198 self
.assert_link_states(
203 def test_bridge_port_priority(self
):
204 self
.assertEqual(self
.read_attr('port1', 'brport/priority'), '32')
205 self
.write_network_dropin('port1.network', 'priority', '''\
209 subprocess
.check_call(['systemctl', 'restart', 'systemd-networkd'])
210 self
.assertEqual(self
.read_attr('port1', 'brport/priority'), '28')
212 def test_bridge_port_priority_set_zero(self
):
213 """It should be possible to set the bridge port priority to 0"""
214 self
.assertEqual(self
.read_attr('port2', 'brport/priority'), '32')
215 self
.write_network_dropin('port2.network', 'priority', '''\
219 subprocess
.check_call(['systemctl', 'restart', 'systemd-networkd'])
220 self
.assertEqual(self
.read_attr('port2', 'brport/priority'), '0')
222 class ClientTestBase(NetworkdTestingUtilities
):
223 """Provide common methods for testing networkd against servers."""
226 def setUpClass(klass
):
227 klass
.orig_log_level
= subprocess
.check_output(
228 ['systemctl', 'show', '--value', '--property', 'LogLevel'],
229 universal_newlines
=True).strip()
230 subprocess
.check_call(['systemd-analyze', 'set-log-level', 'debug'])
233 def tearDownClass(klass
):
234 subprocess
.check_call(['systemd-analyze', 'set-log-level', klass
.orig_log_level
])
237 self
.iface
= 'test_eth42'
238 self
.if_router
= 'router_eth42'
239 self
.workdir_obj
= tempfile
.TemporaryDirectory()
240 self
.workdir
= self
.workdir_obj
.name
241 self
.config
= 'test_eth42.network'
243 # get current journal cursor
244 subprocess
.check_output(['journalctl', '--sync'])
245 out
= subprocess
.check_output(['journalctl', '-b', '--quiet',
246 '--no-pager', '-n0', '--show-cursor'],
247 universal_newlines
=True)
248 self
.assertTrue(out
.startswith('-- cursor:'))
249 self
.journal_cursor
= out
.split()[-1]
252 self
.shutdown_iface()
253 subprocess
.call(['systemctl', 'stop', 'systemd-networkd'])
254 subprocess
.call(['ip', 'link', 'del', 'dummy0'],
255 stderr
=subprocess
.DEVNULL
)
257 def show_journal(self
, unit
):
258 '''Show journal of given unit since start of the test'''
260 print('---- %s ----' % unit
)
261 subprocess
.check_output(['journalctl', '--sync'])
263 subprocess
.call(['journalctl', '-b', '--no-pager', '--quiet',
264 '--cursor', self
.journal_cursor
, '-u', unit
])
266 def create_iface(self
, ipv6
=False):
267 '''Create test interface with DHCP server behind it'''
269 raise NotImplementedError('must be implemented by a subclass')
271 def shutdown_iface(self
):
272 '''Remove test interface and stop DHCP server'''
274 raise NotImplementedError('must be implemented by a subclass')
276 def print_server_log(self
):
277 '''Print DHCP server log for debugging failures'''
279 raise NotImplementedError('must be implemented by a subclass')
281 def do_test(self
, coldplug
=True, ipv6
=False, extra_opts
='',
282 online_timeout
=10, dhcp_mode
='yes'):
284 subprocess
.check_call(['systemctl', 'start', 'systemd-resolved'])
285 except subprocess
.CalledProcessError
:
286 self
.show_journal('systemd-resolved.service')
288 self
.write_network(self
.config
, '''\
293 %s''' % (self
.iface
, dhcp_mode
, extra_opts
))
296 # create interface first, then start networkd
297 self
.create_iface(ipv6
=ipv6
)
298 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
299 elif coldplug
is not None:
300 # start networkd first, then create interface
301 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
302 self
.create_iface(ipv6
=ipv6
)
304 # "None" means test sets up interface by itself
305 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
308 subprocess
.check_call([NETWORKD_WAIT_ONLINE
, '--interface',
309 self
.iface
, '--timeout=%i' % online_timeout
])
312 # check iface state and IP 6 address; FIXME: we need to wait a bit
313 # longer, as the iface is "configured" already with IPv4 *or*
314 # IPv6, but we want to wait for both
316 out
= subprocess
.check_output(['ip', 'a', 'show', 'dev', self
.iface
])
317 if b
'state UP' in out
and b
'inet6 2600' in out
and b
'inet 192.168' in out
:
321 self
.fail('timed out waiting for IPv6 configuration')
323 self
.assertRegex(out
, b
'inet6 2600::.* scope global .*dynamic')
324 self
.assertRegex(out
, b
'inet6 fe80::.* scope link')
326 # should have link-local address on IPv6 only
327 out
= subprocess
.check_output(['ip', '-6', 'a', 'show', 'dev', self
.iface
])
328 self
.assertRegex(out
, br
'inet6 fe80::.* scope link')
329 self
.assertNotIn(b
'scope global', out
)
331 # should have IPv4 address
332 out
= subprocess
.check_output(['ip', '-4', 'a', 'show', 'dev', self
.iface
])
333 self
.assertIn(b
'state UP', out
)
334 self
.assertRegex(out
, br
'inet 192.168.5.\d+/.* scope global dynamic')
336 # check networkctl state
337 out
= subprocess
.check_output(['networkctl'])
338 self
.assertRegex(out
, (r
'%s\s+ether\s+[a-z-]+\s+unmanaged' % self
.if_router
).encode())
339 self
.assertRegex(out
, (r
'%s\s+ether\s+routable\s+configured' % self
.iface
).encode())
341 out
= subprocess
.check_output(['networkctl', 'status', self
.iface
])
342 self
.assertRegex(out
, br
'Type:\s+ether')
343 self
.assertRegex(out
, br
'State:\s+routable.*configured')
344 self
.assertRegex(out
, br
'Address:\s+192.168.5.\d+')
346 self
.assertRegex(out
, br
'2600::')
348 self
.assertNotIn(br
'2600::', out
)
349 self
.assertRegex(out
, br
'fe80::')
350 self
.assertRegex(out
, br
'Gateway:\s+192.168.5.1')
351 self
.assertRegex(out
, br
'DNS:\s+192.168.5.1')
352 except (AssertionError, subprocess
.CalledProcessError
):
353 # show networkd status, journal, and DHCP server log on failure
354 with
open(os
.path
.join(NETWORK_UNITDIR
, self
.config
)) as f
:
355 print('\n---- %s ----\n%s' % (self
.config
, f
.read()))
356 print('---- interface status ----')
358 subprocess
.call(['ip', 'a', 'show', 'dev', self
.iface
])
359 print('---- networkctl status %s ----' % self
.iface
)
361 subprocess
.call(['networkctl', 'status', self
.iface
])
362 self
.show_journal('systemd-networkd.service')
363 self
.print_server_log()
366 for timeout
in range(50):
367 with
open(RESOLV_CONF
) as f
:
369 if 'nameserver 192.168.5.1\n' in contents
:
373 self
.fail('nameserver 192.168.5.1 not found in ' + RESOLV_CONF
)
375 if coldplug
is False:
376 # check post-down.d hook
377 self
.shutdown_iface()
379 def test_coldplug_dhcp_yes_ip4(self
):
380 # we have a 12s timeout on RA, so we need to wait longer
381 self
.do_test(coldplug
=True, ipv6
=False, online_timeout
=15)
383 def test_coldplug_dhcp_yes_ip4_no_ra(self
):
384 # with disabling RA explicitly things should be fast
385 self
.do_test(coldplug
=True, ipv6
=False,
386 extra_opts
='IPv6AcceptRA=False')
388 def test_coldplug_dhcp_ip4_only(self
):
389 # we have a 12s timeout on RA, so we need to wait longer
390 self
.do_test(coldplug
=True, ipv6
=False, dhcp_mode
='ipv4',
393 def test_coldplug_dhcp_ip4_only_no_ra(self
):
394 # with disabling RA explicitly things should be fast
395 self
.do_test(coldplug
=True, ipv6
=False, dhcp_mode
='ipv4',
396 extra_opts
='IPv6AcceptRA=False')
398 def test_coldplug_dhcp_ip6(self
):
399 self
.do_test(coldplug
=True, ipv6
=True)
401 def test_hotplug_dhcp_ip4(self
):
402 # With IPv4 only we have a 12s timeout on RA, so we need to wait longer
403 self
.do_test(coldplug
=False, ipv6
=False, online_timeout
=15)
405 def test_hotplug_dhcp_ip6(self
):
406 self
.do_test(coldplug
=False, ipv6
=True)
408 def test_route_only_dns(self
):
409 self
.write_network('myvpn.netdev', '''\
413 MACAddress=12:34:56:78:9a:bc''')
414 self
.write_network('myvpn.network', '''\
418 Address=192.168.42.100
420 Domains= ~company''')
422 self
.do_test(coldplug
=True, ipv6
=False,
423 extra_opts
='IPv6AcceptRouterAdvertisements=False')
425 with
open(RESOLV_CONF
) as f
:
427 # ~company is not a search domain, only a routing domain
428 self
.assertNotRegex(contents
, 'search.*company')
429 # our global server should appear
430 self
.assertIn('nameserver 192.168.5.1\n', contents
)
431 # should not have domain-restricted server as global server
432 self
.assertNotIn('nameserver 192.168.42.1\n', contents
)
434 def test_route_only_dns_all_domains(self
):
435 self
.write_network('myvpn.netdev', '''[NetDev]
438 MACAddress=12:34:56:78:9a:bc''')
439 self
.write_network('myvpn.network', '''[Match]
442 Address=192.168.42.100
444 Domains= ~company ~.''')
446 self
.do_test(coldplug
=True, ipv6
=False,
447 extra_opts
='IPv6AcceptRouterAdvertisements=False')
449 with
open(RESOLV_CONF
) as f
:
452 # ~company is not a search domain, only a routing domain
453 self
.assertNotRegex(contents
, 'search.*company')
455 # our global server should appear
456 self
.assertIn('nameserver 192.168.5.1\n', contents
)
457 # should have company server as global server due to ~.
458 self
.assertIn('nameserver 192.168.42.1\n', contents
)
461 @unittest.skipUnless(HAVE_DNSMASQ
, 'dnsmasq not installed')
462 class DnsmasqClientTest(ClientTestBase
, unittest
.TestCase
):
463 '''Test networkd client against dnsmasq'''
468 self
.iface_mac
= 'de:ad:be:ef:47:11'
470 def create_iface(self
, ipv6
=False, dnsmasq_opts
=None):
471 '''Create test interface with DHCP server behind it'''
474 subprocess
.check_call(['ip', 'link', 'add', 'name', self
.iface
,
475 'address', self
.iface_mac
,
476 'type', 'veth', 'peer', 'name', self
.if_router
])
478 # give our router an IP
479 subprocess
.check_call(['ip', 'a', 'flush', 'dev', self
.if_router
])
480 subprocess
.check_call(['ip', 'a', 'add', '192.168.5.1/24', 'dev', self
.if_router
])
482 subprocess
.check_call(['ip', 'a', 'add', '2600::1/64', 'dev', self
.if_router
])
483 subprocess
.check_call(['ip', 'link', 'set', self
.if_router
, 'up'])
486 self
.dnsmasq_log
= os
.path
.join(self
.workdir
, 'dnsmasq.log')
487 lease_file
= os
.path
.join(self
.workdir
, 'dnsmasq.leases')
489 extra_opts
= ['--enable-ra', '--dhcp-range=2600::10,2600::20']
493 extra_opts
+= dnsmasq_opts
494 self
.dnsmasq
= subprocess
.Popen(
495 ['dnsmasq', '--keep-in-foreground', '--log-queries',
496 '--log-facility=' + self
.dnsmasq_log
, '--conf-file=/dev/null',
497 '--dhcp-leasefile=' + lease_file
, '--bind-interfaces',
498 '--interface=' + self
.if_router
, '--except-interface=lo',
499 '--dhcp-range=192.168.5.10,192.168.5.200'] + extra_opts
)
501 def shutdown_iface(self
):
502 '''Remove test interface and stop DHCP server'''
505 subprocess
.check_call(['ip', 'link', 'del', 'dev', self
.if_router
])
506 self
.if_router
= None
512 def print_server_log(self
):
513 '''Print DHCP server log for debugging failures'''
515 with
open(self
.dnsmasq_log
) as f
:
516 sys
.stdout
.write('\n\n---- dnsmasq log ----\n%s\n------\n\n' % f
.read())
518 def test_resolved_domain_restricted_dns(self
):
519 '''resolved: domain-restricted DNS servers'''
521 # create interface for generic connections; this will map all DNS names
523 self
.create_iface(dnsmasq_opts
=['--address=/#/192.168.42.1'])
524 self
.write_network('general.network', '''\
529 IPv6AcceptRA=False''' % self
.iface
)
531 # create second device/dnsmasq for a .company/.lab VPN interface
532 # static IPs for simplicity
533 self
.add_veth_pair('testvpnclient', 'testvpnrouter')
534 subprocess
.check_call(['ip', 'a', 'flush', 'dev', 'testvpnrouter'])
535 subprocess
.check_call(['ip', 'a', 'add', '10.241.3.1/24', 'dev', 'testvpnrouter'])
536 subprocess
.check_call(['ip', 'link', 'set', 'testvpnrouter', 'up'])
538 vpn_dnsmasq_log
= os
.path
.join(self
.workdir
, 'dnsmasq-vpn.log')
539 vpn_dnsmasq
= subprocess
.Popen(
540 ['dnsmasq', '--keep-in-foreground', '--log-queries',
541 '--log-facility=' + vpn_dnsmasq_log
, '--conf-file=/dev/null',
542 '--dhcp-leasefile=/dev/null', '--bind-interfaces',
543 '--interface=testvpnrouter', '--except-interface=lo',
544 '--address=/math.lab/10.241.3.3', '--address=/cantina.company/10.241.4.4'])
545 self
.addCleanup(vpn_dnsmasq
.wait
)
546 self
.addCleanup(vpn_dnsmasq
.kill
)
548 self
.write_network('vpn.network', '''\
553 Address=10.241.3.2/24
555 Domains= ~company ~lab''')
557 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
558 subprocess
.check_call([NETWORKD_WAIT_ONLINE
, '--interface', self
.iface
,
559 '--interface=testvpnclient', '--timeout=20'])
561 # ensure we start fresh with every test
562 subprocess
.check_call(['systemctl', 'restart', 'systemd-resolved'])
564 # test vpnclient specific domains; these should *not* be answered by
566 out
= subprocess
.check_output(['systemd-resolve', 'math.lab'])
567 self
.assertIn(b
'math.lab: 10.241.3.3', out
)
568 out
= subprocess
.check_output(['systemd-resolve', 'kettle.cantina.company'])
569 self
.assertIn(b
'kettle.cantina.company: 10.241.4.4', out
)
571 # test general domains
572 out
= subprocess
.check_output(['systemd-resolve', 'megasearch.net'])
573 self
.assertIn(b
'megasearch.net: 192.168.42.1', out
)
575 with
open(self
.dnsmasq_log
) as f
:
576 general_log
= f
.read()
577 with
open(vpn_dnsmasq_log
) as f
:
580 # VPN domains should only be sent to VPN DNS
581 self
.assertRegex(vpn_log
, 'query.*math.lab')
582 self
.assertRegex(vpn_log
, 'query.*cantina.company')
583 self
.assertNotIn('.lab', general_log
)
584 self
.assertNotIn('.company', general_log
)
586 # general domains should not be sent to the VPN DNS
587 self
.assertRegex(general_log
, 'query.*megasearch.net')
588 self
.assertNotIn('megasearch.net', vpn_log
)
590 def test_resolved_etc_hosts(self
):
591 '''resolved queries to /etc/hosts'''
593 # FIXME: -t MX query fails with enabled DNSSEC (even when using
594 # the known negative trust anchor .internal instead of .example)
595 conf
= '/run/systemd/resolved.conf.d/test-disable-dnssec.conf'
596 os
.makedirs(os
.path
.dirname(conf
), exist_ok
=True)
597 with
open(conf
, 'w') as f
:
598 f
.write('[Resolve]\nDNSSEC=no')
599 self
.addCleanup(os
.remove
, conf
)
601 # create /etc/hosts bind mount which resolves my.example for IPv4
602 hosts
= os
.path
.join(self
.workdir
, 'hosts')
603 with
open(hosts
, 'w') as f
:
604 f
.write('172.16.99.99 my.example\n')
605 subprocess
.check_call(['mount', '--bind', hosts
, '/etc/hosts'])
606 self
.addCleanup(subprocess
.call
, ['umount', '/etc/hosts'])
607 subprocess
.check_call(['systemctl', 'stop', 'systemd-resolved.service'])
609 # note: different IPv4 address here, so that it's easy to tell apart
610 # what resolved the query
611 self
.create_iface(dnsmasq_opts
=['--host-record=my.example,172.16.99.1,2600::99:99',
612 '--host-record=other.example,172.16.0.42,2600::42',
613 '--mx-host=example,mail.example'],
615 self
.do_test(coldplug
=None, ipv6
=True)
618 # family specific queries
619 out
= subprocess
.check_output(['systemd-resolve', '-4', 'my.example'])
620 self
.assertIn(b
'my.example: 172.16.99.99', out
)
621 # we don't expect an IPv6 answer; if /etc/hosts has any IP address,
622 # it's considered a sufficient source
623 self
.assertNotEqual(subprocess
.call(['systemd-resolve', '-6', 'my.example']), 0)
624 # "any family" query; IPv4 should come from /etc/hosts
625 out
= subprocess
.check_output(['systemd-resolve', 'my.example'])
626 self
.assertIn(b
'my.example: 172.16.99.99', out
)
627 # IP → name lookup; again, takes the /etc/hosts one
628 out
= subprocess
.check_output(['systemd-resolve', '172.16.99.99'])
629 self
.assertIn(b
'172.16.99.99: my.example', out
)
631 # non-address RRs should fall back to DNS
632 out
= subprocess
.check_output(['systemd-resolve', '--type=MX', 'example'])
633 self
.assertIn(b
'example IN MX 1 mail.example', out
)
635 # other domains query DNS
636 out
= subprocess
.check_output(['systemd-resolve', 'other.example'])
637 self
.assertIn(b
'172.16.0.42', out
)
638 out
= subprocess
.check_output(['systemd-resolve', '172.16.0.42'])
639 self
.assertIn(b
'172.16.0.42: other.example', out
)
640 except (AssertionError, subprocess
.CalledProcessError
):
641 self
.show_journal('systemd-resolved.service')
642 self
.print_server_log()
645 def test_transient_hostname(self
):
646 '''networkd sets transient hostname from DHCP'''
648 orig_hostname
= socket
.gethostname()
649 self
.addCleanup(socket
.sethostname
, orig_hostname
)
650 # temporarily move /etc/hostname away; restart hostnamed to pick it up
651 if os
.path
.exists('/etc/hostname'):
652 subprocess
.check_call(['mount', '--bind', '/dev/null', '/etc/hostname'])
653 self
.addCleanup(subprocess
.call
, ['umount', '/etc/hostname'])
654 subprocess
.check_call(['systemctl', 'stop', 'systemd-hostnamed.service'])
656 self
.create_iface(dnsmasq_opts
=['--dhcp-host=%s,192.168.5.210,testgreen' % self
.iface_mac
])
657 self
.do_test(coldplug
=None, extra_opts
='IPv6AcceptRA=False', dhcp_mode
='ipv4')
660 # should have received the fixed IP above
661 out
= subprocess
.check_output(['ip', '-4', 'a', 'show', 'dev', self
.iface
])
662 self
.assertRegex(out
, b
'inet 192.168.5.210/24 .* scope global dynamic')
663 # should have set transient hostname in hostnamed; this is
664 # sometimes a bit lagging (issue #4753), so retry a few times
665 for retry
in range(1, 6):
666 out
= subprocess
.check_output(['hostnamectl'])
667 if b
'testgreen' in out
:
670 sys
.stdout
.write('[retry %i] ' % retry
)
673 self
.fail('Transient hostname not found in hostnamectl:\n%s' % out
.decode())
674 # and also applied to the system
675 self
.assertEqual(socket
.gethostname(), 'testgreen')
676 except AssertionError:
677 self
.show_journal('systemd-networkd.service')
678 self
.show_journal('systemd-hostnamed.service')
679 self
.print_server_log()
682 def test_transient_hostname_with_static(self
):
683 '''transient hostname is not applied if static hostname exists'''
685 orig_hostname
= socket
.gethostname()
686 self
.addCleanup(socket
.sethostname
, orig_hostname
)
687 if not os
.path
.exists('/etc/hostname'):
688 self
.writeConfig('/etc/hostname', orig_hostname
)
689 subprocess
.check_call(['systemctl', 'stop', 'systemd-hostnamed.service'])
691 self
.create_iface(dnsmasq_opts
=['--dhcp-host=%s,192.168.5.210,testgreen' % self
.iface_mac
])
692 self
.do_test(coldplug
=None, extra_opts
='IPv6AcceptRA=False', dhcp_mode
='ipv4')
695 # should have received the fixed IP above
696 out
= subprocess
.check_output(['ip', '-4', 'a', 'show', 'dev', self
.iface
])
697 self
.assertRegex(out
, b
'inet 192.168.5.210/24 .* scope global dynamic')
698 # static hostname wins over transient one, thus *not* applied
699 self
.assertEqual(socket
.gethostname(), orig_hostname
)
700 except AssertionError:
701 self
.show_journal('systemd-networkd.service')
702 self
.show_journal('systemd-hostnamed.service')
703 self
.print_server_log()
707 class NetworkdClientTest(ClientTestBase
, unittest
.TestCase
):
708 '''Test networkd client against networkd server'''
714 def create_iface(self
, ipv6
=False, dhcpserver_opts
=None):
715 '''Create test interface with DHCP server behind it'''
717 # run "router-side" networkd in own mount namespace to shield it from
718 # "client-side" configuration and networkd
719 (fd
, script
) = tempfile
.mkstemp(prefix
='networkd-router.sh')
720 self
.addCleanup(os
.remove
, script
)
721 with os
.fdopen(fd
, 'w+') as f
:
724 mkdir -p /run/systemd/network
725 mkdir -p /run/systemd/netif
726 mount -t tmpfs none /run/systemd/network
727 mount -t tmpfs none /run/systemd/netif
728 [ ! -e /run/dbus ] || mount -t tmpfs none /run/dbus
729 # create router/client veth pair
730 cat << EOF > /run/systemd/network/test.netdev
739 cat << EOF > /run/systemd/network/test.network
744 Address=192.168.5.1/24
755 # run networkd as in systemd-networkd.service
756 exec $(systemctl cat systemd-networkd.service | sed -n '/^ExecStart=/ { s/^.*=//; s/^[@+-]//; s/^!*//; p}')
757 ''' % {'ifr': self
.if_router
, 'ifc': self
.iface
, 'addr6': ipv6
and 'Address=2600::1/64' or '',
758 'dhopts': dhcpserver_opts
or ''})
762 subprocess
.check_call(['systemd-run', '--unit=networkd-test-router.service',
763 '-p', 'InaccessibleDirectories=-/etc/systemd/network',
764 '-p', 'InaccessibleDirectories=-/run/systemd/network',
765 '-p', 'InaccessibleDirectories=-/run/systemd/netif',
766 '--service-type=notify', script
])
768 # wait until devices got created
770 out
= subprocess
.check_output(['ip', 'a', 'show', 'dev', self
.if_router
])
771 if b
'state UP' in out
and b
'scope global' in out
:
775 def shutdown_iface(self
):
776 '''Remove test interface and stop DHCP server'''
779 subprocess
.check_call(['systemctl', 'stop', 'networkd-test-router.service'])
780 # ensure failed transient unit does not stay around
781 subprocess
.call(['systemctl', 'reset-failed', 'networkd-test-router.service'])
782 subprocess
.call(['ip', 'link', 'del', 'dev', self
.if_router
])
783 self
.if_router
= None
785 def print_server_log(self
):
786 '''Print DHCP server log for debugging failures'''
788 self
.show_journal('networkd-test-router.service')
790 @unittest.skip('networkd does not have DHCPv6 server support')
791 def test_hotplug_dhcp_ip6(self
):
794 @unittest.skip('networkd does not have DHCPv6 server support')
795 def test_coldplug_dhcp_ip6(self
):
798 def test_search_domains(self
):
800 # we don't use this interface for this test
801 self
.if_router
= None
803 self
.write_network('test.netdev', '''\
807 MACAddress=12:34:56:78:9a:bc''')
808 self
.write_network('test.network', '''\
812 Address=192.168.42.100
814 Domains= one two three four five six seven eight nine ten''')
816 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
818 for timeout
in range(50):
819 with
open(RESOLV_CONF
) as f
:
821 if ' one' in contents
:
824 self
.assertRegex(contents
, 'search .*one two three four')
825 self
.assertNotIn('seven\n', contents
)
826 self
.assertIn('# Too many search domains configured, remaining ones ignored.\n', contents
)
828 def test_search_domains_too_long(self
):
830 # we don't use this interface for this test
831 self
.if_router
= None
833 name_prefix
= 'a' * 60
835 self
.write_network('test.netdev', '''\
839 MACAddress=12:34:56:78:9a:bc''')
840 self
.write_network('test.network', '''\
844 Address=192.168.42.100
846 Domains={p}0 {p}1 {p}2 {p}3 {p}4'''.format(p
=name_prefix
))
848 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
850 for timeout
in range(50):
851 with
open(RESOLV_CONF
) as f
:
853 if ' one' in contents
:
856 self
.assertRegex(contents
, 'search .*{p}0 {p}1 {p}2'.format(p
=name_prefix
))
857 self
.assertIn('# Total length of all search domains is too long, remaining ones ignored.', contents
)
859 def test_dropin(self
):
860 # we don't use this interface for this test
861 self
.if_router
= None
863 self
.write_network('test.netdev', '''\
867 MACAddress=12:34:56:78:9a:bc''')
868 self
.write_network('test.network', '''\
872 Address=192.168.42.100
874 self
.write_network_dropin('test.network', 'dns', '''\
878 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
880 for timeout
in range(50):
881 with
open(RESOLV_CONF
) as f
:
883 if ' 127.0.0.1' in contents
:
886 self
.assertIn('nameserver 192.168.42.1\n', contents
)
887 self
.assertIn('nameserver 127.0.0.1\n', contents
)
889 def test_dhcp_timezone(self
):
890 '''networkd sets time zone from DHCP'''
893 out
= subprocess
.check_output(['busctl', 'get-property', 'org.freedesktop.timedate1',
894 '/org/freedesktop/timedate1', 'org.freedesktop.timedate1', 'Timezone'])
895 assert out
.startswith(b
's "')
897 assert out
.endswith(b
'"')
898 return out
[3:-1].decode()
900 orig_timezone
= get_tz()
901 self
.addCleanup(subprocess
.call
, ['timedatectl', 'set-timezone', orig_timezone
])
903 self
.create_iface(dhcpserver_opts
='EmitTimezone=yes\nTimezone=Pacific/Honolulu')
904 self
.do_test(coldplug
=None, extra_opts
='IPv6AcceptRA=false\n[DHCP]\nUseTimezone=true', dhcp_mode
='ipv4')
906 # should have applied the received timezone
908 self
.assertEqual(get_tz(), 'Pacific/Honolulu')
909 except AssertionError:
910 self
.show_journal('systemd-networkd.service')
911 self
.show_journal('systemd-hostnamed.service')
915 class MatchClientTest(unittest
.TestCase
, NetworkdTestingUtilities
):
916 """Test [Match] sections in .network files.
918 Be aware that matching the test host's interfaces will wipe their
919 configuration, so as a precaution, all network files should have a
920 restrictive [Match] section to only ever interfere with the
921 temporary veth interfaces created here.
926 subprocess
.call(['systemctl', 'stop', 'systemd-networkd'])
928 def test_basic_matching(self
):
929 """Verify the Name= line works throughout this class."""
930 self
.add_veth_pair('test_if1', 'fake_if2')
931 self
.write_network('test.network', "[Match]\nName=test_*\n[Network]")
932 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
933 self
.assert_link_states(test_if1
='managed', fake_if2
='unmanaged')
935 def test_inverted_matching(self
):
936 """Verify that a '!'-prefixed value inverts the match."""
937 # Use a MAC address as the interfaces' common matching attribute
938 # to avoid depending on udev, to support testing in containers.
939 mac
= '00:01:02:03:98:99'
940 self
.add_veth_pair('test_veth', 'test_peer',
941 ['addr', mac
], ['addr', mac
])
942 self
.write_network('no-veth.network', """\
945 Name=!nonexistent *peer*
947 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
948 self
.assert_link_states(test_veth
='managed', test_peer
='unmanaged')
951 class UnmanagedClientTest(unittest
.TestCase
, NetworkdTestingUtilities
):
952 """Test if networkd manages the correct interfaces."""
955 """Write .network files to match the named veth devices."""
956 # Define the veth+peer pairs to be created.
957 # Their pairing doesn't actually matter, only their names do.
963 # Define the contents of .network files to be read in order.
965 "[Match]\nName=m1def\n",
966 "[Match]\nName=m1unm\n[Link]\nUnmanaged=yes\n",
967 "[Match]\nName=m1*\n[Link]\nUnmanaged=no\n",
970 # Write out the .network files to be cleaned up automatically.
971 for i
, config
in enumerate(self
.configs
):
972 self
.write_network("%02d-test.network" % i
, config
)
976 subprocess
.call(['systemctl', 'stop', 'systemd-networkd'])
978 def create_iface(self
):
979 """Create temporary veth pairs for interface matching."""
980 for veth
, peer
in self
.veths
.items():
981 self
.add_veth_pair(veth
, peer
)
983 def test_unmanaged_setting(self
):
984 """Verify link states with Unmanaged= settings, hot-plug."""
985 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
987 self
.assert_link_states(m1def
='managed',
992 def test_unmanaged_setting_coldplug(self
):
993 """Verify link states with Unmanaged= settings, cold-plug."""
995 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
996 self
.assert_link_states(m1def
='managed',
1001 def test_catchall_config(self
):
1002 """Verify link states with a catch-all config, hot-plug."""
1003 # Don't actually catch ALL interfaces. It messes up the host.
1004 self
.write_network('all.network', "[Match]\nName=m[01]???\n")
1005 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
1007 self
.assert_link_states(m1def
='managed',
1012 def test_catchall_config_coldplug(self
):
1013 """Verify link states with a catch-all config, cold-plug."""
1014 # Don't actually catch ALL interfaces. It messes up the host.
1015 self
.write_network('all.network', "[Match]\nName=m[01]???\n")
1017 subprocess
.check_call(['systemctl', 'start', 'systemd-networkd'])
1018 self
.assert_link_states(m1def
='managed',
1024 if __name__
== '__main__':
1025 unittest
.main(testRunner
=unittest
.TextTestRunner(stream
=sys
.stdout
,