def test_systemctl_is_active(self):
self.mock_cmd = MockCmd('systemctl')
path_env = os.environ['PATH']
os.environ['PATH'] = os.path.dirname(
self.mock_cmd.path) + os.pathsep + path_env
self.assertTrue(utils.systemctl_is_active('some.service'))
self.assertEquals(
self.mock_cmd.calls(),
[['systemctl', '--quiet', 'is-active', 'some.service']])
def command_apply(self, run_generate=True, sync=False, exit_on_error=True): # pragma: nocover (covered in autopkgtest)
config_manager = ConfigManager()
# For certain use-cases, we might want to only apply specific configuration.
# If we only need SR-IOV configuration, do that and exit early.
if self.sriov_only:
NetplanApply.process_sriov_config(config_manager, exit_on_error)
return
# If we only need OpenVSwitch cleanup, do that and exit early.
elif self.only_ovs_cleanup:
NetplanApply.process_ovs_cleanup(config_manager, False, False, exit_on_error)
return
# if we are inside a snap, then call dbus to run netplan apply instead
if "SNAP" in os.environ:
# TODO: maybe check if we are inside a classic snap and don't do
# this if we are in a classic snap?
busctl = shutil.which("busctl")
if busctl is None:
raise RuntimeError("missing busctl utility")
# XXX: DO NOT TOUCH or change this API call, it is used by snapd to communicate
# using core20 netplan binary/client/CLI on core18 base systems. Any change
# must be agreed upon with the snapd team, so we don't break support for
# base systems running older netplan versions.
res = subprocess.call([busctl, "call", "--quiet", "--system",
"io.netplan.Netplan", # the service
"/io/netplan/Netplan", # the object
"io.netplan.Netplan", # the interface
"Apply", # the method
])
if res != 0:
if exit_on_error:
sys.exit(res)
elif res == 130:
raise PermissionError(
"failed to communicate with dbus service")
elif res == 1:
raise RuntimeError(
"failed to communicate with dbus service")
else:
return
ovs_cleanup_service = '/run/systemd/system/netplan-ovs-cleanup.service'
old_files_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
old_ovs_glob = glob.glob('/run/systemd/system/netplan-ovs-*')
# Ignore netplan-ovs-cleanup.service, as it can always be there
if ovs_cleanup_service in old_ovs_glob:
old_ovs_glob.remove(ovs_cleanup_service)
old_files_ovs = bool(old_ovs_glob)
old_nm_glob = glob.glob('/run/NetworkManager/system-connections/netplan-*')
nm_ifaces = utils.nm_interfaces(old_nm_glob, netifaces.interfaces())
old_files_nm = bool(old_nm_glob)
generator_call = []
generate_out = None
if 'NETPLAN_PROFILE' in os.environ:
generator_call.extend(['valgrind', '--leak-check=full'])
generate_out = subprocess.STDOUT
generator_call.append(utils.get_generator_path())
if run_generate and subprocess.call(generator_call, stderr=generate_out) != 0:
if exit_on_error:
sys.exit(os.EX_CONFIG)
else:
raise ConfigurationError("the configuration could not be generated")
devices = netifaces.interfaces()
# Re-start service when
# 1. We have configuration files for it
# 2. Previously we had config files for it but not anymore
# Ideally we should compare the content of the *netplan-* files before and
# after generation to minimize the number of re-starts, but the conditions
# above works too.
restart_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
if not restart_networkd and old_files_networkd:
restart_networkd = True
restart_ovs_glob = glob.glob('/run/systemd/system/netplan-ovs-*')
# Ignore netplan-ovs-cleanup.service, as it can always be there
if ovs_cleanup_service in restart_ovs_glob:
restart_ovs_glob.remove(ovs_cleanup_service)
restart_ovs = bool(restart_ovs_glob)
if not restart_ovs and old_files_ovs:
# OVS is managed via systemd units
restart_networkd = True
restart_nm_glob = glob.glob('/run/NetworkManager/system-connections/netplan-*')
nm_ifaces.update(utils.nm_interfaces(restart_nm_glob, devices))
restart_nm = bool(restart_nm_glob)
if not restart_nm and old_files_nm:
restart_nm = True
# stop backends
if restart_networkd:
logging.debug('netplan generated networkd configuration changed, reloading networkd')
# Running 'systemctl daemon-reload' will re-run the netplan systemd generator,
# so let's make sure we only run it iff we're willing to run 'netplan generate'
if run_generate:
utils.systemctl_daemon_reload()
# Clean up any old netplan related OVS ports/bonds/bridges, if applicable
NetplanApply.process_ovs_cleanup(config_manager, old_files_ovs, restart_ovs, exit_on_error)
wpa_services = ['netplan-wpa-*.service']
# Historically (up to v0.98) we had netplan-wpa@*.service files, in case of an
# upgraded system, we need to make sure to stop those.
if utils.systemctl_is_active('netplan-wpa@*.service'):
wpa_services.insert(0, 'netplan-wpa@*.service')
utils.systemctl('stop', wpa_services, sync=sync)
else:
logging.debug('no netplan generated networkd configuration exists')
if restart_nm:
logging.debug('netplan generated NM configuration changed, restarting NM')
if utils.nm_running():
# restarting NM does not cause new config to be applied, need to shut down devices first
for device in devices:
if device not in nm_ifaces:
continue # do not touch this interface
# ignore failures here -- some/many devices might not be managed by NM
try:
utils.nmcli(['device', 'disconnect', device])
except subprocess.CalledProcessError:
pass
utils.systemctl_network_manager('stop', sync=sync)
else:
logging.debug('no netplan generated NM configuration exists')
# Refresh devices now; restarting a backend might have made something appear.
devices = netifaces.interfaces()
# evaluate config for extra steps we need to take (like renaming)
# for now, only applies to non-virtual (real) devices.
config_manager.parse()
changes = NetplanApply.process_link_changes(devices, config_manager)
# if the interface is up, we can still apply some .link file changes
# but we cannot apply the interface rename via udev, as it won't touch
# the interface name, if it was already renamed once (e.g. during boot),
# because of the NamePolicy=keep default:
# https://www.freedesktop.org/software/systemd/man/systemd.net-naming-scheme.html
devices = netifaces.interfaces()
for device in devices:
logging.debug('netplan triggering .link rules for %s', device)
try:
subprocess.check_call(['udevadm', 'test-builtin',
'net_setup_link',
'/sys/class/net/' + device],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
except subprocess.CalledProcessError:
logging.debug('Ignoring device without syspath: %s', device)
# apply some more changes manually
for iface, settings in changes.items():
# rename non-critical network interfaces
if settings.get('name'):
# bring down the interface, using its current (matched) interface name
subprocess.check_call(['ip', 'link', 'set', 'dev', iface, 'down'],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
# rename the interface to the name given via 'set-name'
subprocess.check_call(['ip', 'link', 'set',
'dev', iface,
'name', settings.get('name')],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
subprocess.check_call(['udevadm', 'settle'])
# apply any SR-IOV related changes, if applicable
NetplanApply.process_sriov_config(config_manager, exit_on_error)
# (re)start backends
if restart_networkd:
netplan_wpa = [os.path.basename(f) for f in glob.glob('/run/systemd/system/*.wants/netplan-wpa-*.service')]
# exclude the special 'netplan-ovs-cleanup.service' unit
netplan_ovs = [os.path.basename(f) for f in glob.glob('/run/systemd/system/*.wants/netplan-ovs-*.service')
if not f.endswith('/' + OVS_CLEANUP_SERVICE)]
# Run 'systemctl start' command synchronously, to avoid race conditions
# with 'oneshot' systemd service units, e.g. netplan-ovs-*.service.
utils.networkctl_reconfigure(utils.networkd_interfaces())
# 1st: execute OVS cleanup, to avoid races while applying OVS config
utils.systemctl('start', [OVS_CLEANUP_SERVICE], sync=True)
# 2nd: start all other services
utils.systemctl('start', netplan_wpa + netplan_ovs, sync=True)
if restart_nm:
# Flush all IP addresses of NM managed interfaces, to avoid NM creating
# new, non netplan-* connection profiles, using the existing IPs.
for iface in utils.nm_interfaces(restart_nm_glob, devices):
utils.ip_addr_flush(iface)
utils.systemctl_network_manager('start', sync=sync)
def command_apply(
run_generate=True,
sync=False,
exit_on_error=True): # pragma: nocover (covered in autopkgtest)
# if we are inside a snap, then call dbus to run netplan apply instead
if "SNAP" in os.environ:
# TODO: maybe check if we are inside a classic snap and don't do
# this if we are in a classic snap?
busctl = shutil.which("busctl")
if busctl is None:
raise RuntimeError("missing busctl utility")
res = subprocess.call([
busctl,
"call",
"--quiet",
"--system",
"io.netplan.Netplan", # the service
"/io/netplan/Netplan", # the object
"io.netplan.Netplan", # the interface
"Apply", # the method
])
if res != 0:
if exit_on_error:
sys.exit(res)
elif res == 130:
raise PermissionError(
"failed to communicate with dbus service")
elif res == 1:
raise RuntimeError(
"failed to communicate with dbus service")
else:
return
old_files_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
old_files_nm = bool(
glob.glob('/run/NetworkManager/system-connections/netplan-*'))
generator_call = []
generate_out = None
if 'NETPLAN_PROFILE' in os.environ:
generator_call.extend(['valgrind', '--leak-check=full'])
generate_out = subprocess.STDOUT
generator_call.append(utils.get_generator_path())
if run_generate and subprocess.call(generator_call,
stderr=generate_out) != 0:
if exit_on_error:
sys.exit(os.EX_CONFIG)
else:
raise ConfigurationError(
"the configuration could not be generated")
config_manager = ConfigManager()
devices = netifaces.interfaces()
# Re-start service when
# 1. We have configuration files for it
# 2. Previously we had config files for it but not anymore
# Ideally we should compare the content of the *netplan-* files before and
# after generation to minimize the number of re-starts, but the conditions
# above works too.
restart_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
if not restart_networkd and old_files_networkd:
restart_networkd = True
restart_nm = bool(
glob.glob('/run/NetworkManager/system-connections/netplan-*'))
if not restart_nm and old_files_nm:
restart_nm = True
# stop backends
if restart_networkd:
logging.debug(
'netplan generated networkd configuration changed, restarting networkd'
)
# Running 'systemctl daemon-reload' will re-run the netplan systemd generator,
# so let's make sure we only run it iff we're willing to run 'netplan generate'
if run_generate:
utils.systemctl_daemon_reload()
wpa_services = ['netplan-wpa-*.service']
# Historically (up to v0.98) we had netplan-wpa@*.service files, in case of an
# upgraded system, we need to make sure to stop those.
if utils.systemctl_is_active('netplan-wpa@*.service'):
wpa_services.insert(0, 'netplan-wpa@*.service')
utils.systemctl_networkd('stop',
sync=sync,
extra_services=wpa_services)
else:
logging.debug('no netplan generated networkd configuration exists')
if restart_nm:
logging.debug(
'netplan generated NM configuration changed, restarting NM')
if utils.nm_running():
# restarting NM does not cause new config to be applied, need to shut down devices first
for device in devices:
# ignore failures here -- some/many devices might not be managed by NM
try:
utils.nmcli(['device', 'disconnect', device])
except subprocess.CalledProcessError:
pass
utils.systemctl_network_manager('stop', sync=sync)
else:
logging.debug('no netplan generated NM configuration exists')
# Refresh devices now; restarting a backend might have made something appear.
devices = netifaces.interfaces()
# evaluate config for extra steps we need to take (like renaming)
# for now, only applies to non-virtual (real) devices.
config_manager.parse()
changes = NetplanApply.process_link_changes(devices, config_manager)
# apply any SR-IOV related changes, if applicable
try:
apply_sriov_config(devices, config_manager)
except (ConfigurationError, RuntimeError) as e:
logging.error(str(e))
if exit_on_error:
sys.exit(1)
# if the interface is up, we can still apply some .link file changes
devices = netifaces.interfaces()
for device in devices:
logging.debug('netplan triggering .link rules for %s', device)
try:
subprocess.check_call([
'udevadm', 'test-builtin', 'net_setup_link',
'/sys/class/net/' + device
],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
except subprocess.CalledProcessError:
logging.debug('Ignoring device without syspath: %s', device)
# apply renames to "down" devices
for iface, settings in changes.items():
if settings.get('name'):
subprocess.check_call([
'ip', 'link', 'set', 'dev', iface, 'name',
settings.get('name')
],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
subprocess.check_call(['udevadm', 'settle'])
# (re)start backends
if restart_networkd:
netplan_wpa = [
os.path.basename(f) for f in glob.glob(
'/run/systemd/system/*.wants/netplan-wpa-*.service')
]
utils.systemctl_networkd('start',
sync=sync,
extra_services=netplan_wpa)
if restart_nm:
utils.systemctl_network_manager('start', sync=sync)