def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
etcd_watcher = EtcdWatcher(config)
etcd_watcher.start()
# Ask the EtcdWatcher to fill in the global config object before we
# proceed. We don't yet support config updates.
etcd_watcher.load_config(async=False)
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
v4_filter_updater = IptablesUpdater("filter", ip_version=4)
v4_nat_updater = IptablesUpdater("nat", ip_version=4)
v4_ipset_mgr = IpsetManager(IPV4)
v4_rules_manager = RulesManager(4, v4_filter_updater, v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_ep_manager = EndpointManager(config, IPV4, v4_filter_updater,
v4_dispatch_chains, v4_rules_manager)
v6_filter_updater = IptablesUpdater("filter", ip_version=6)
v6_ipset_mgr = IpsetManager(IPV6)
v6_rules_manager = RulesManager(6, v6_filter_updater, v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_ep_manager = EndpointManager(config, IPV6, v6_filter_updater,
v6_dispatch_chains, v6_rules_manager)
update_splitter = UpdateSplitter(
config, [v4_ipset_mgr, v6_ipset_mgr],
[v4_rules_manager, v6_rules_manager],
[v4_ep_manager, v6_ep_manager],
[v4_filter_updater, v6_filter_updater])
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
update_splitter.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
iface_watcher.start()
monitored_items = [
update_splitter.greenlet, v4_nat_updater.greenlet,
v4_filter_updater.greenlet, v4_nat_updater.greenlet,
v4_ipset_mgr.greenlet, v4_rules_manager.greenlet,
v4_dispatch_chains.greenlet, v4_ep_manager.greenlet,
v6_filter_updater.greenlet, v6_ipset_mgr.greenlet,
v6_rules_manager.greenlet, v6_dispatch_chains.greenlet,
v6_ep_manager.greenlet, iface_watcher.greenlet,
etcd_watcher.greenlet
]
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v6_filter_updater,
v4_nat_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
f = etcd_watcher.watch_etcd(update_splitter, async=True)
monitored_items.append(f)
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
v4_filter_updater = IptablesUpdater("filter", ip_version=4)
v4_nat_updater = IptablesUpdater("nat", ip_version=4)
v4_ipset_mgr = IpsetManager(IPV4)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(4, v4_filter_updater, v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_ep_manager = EndpointManager(config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager)
v6_filter_updater = IptablesUpdater("filter", ip_version=6)
v6_ipset_mgr = IpsetManager(IPV6)
v6_rules_manager = RulesManager(6, v6_filter_updater, v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_ep_manager = EndpointManager(config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager)
update_splitter = UpdateSplitter(config,
[v4_ipset_mgr, v6_ipset_mgr],
[v4_rules_manager, v6_rules_manager],
[v4_ep_manager, v6_ep_manager],
[v4_filter_updater,
v6_filter_updater],
v4_masq_manager)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
update_splitter.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
update_splitter,
v4_nat_updater,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v6_filter_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
iface_watcher,
etcd_api,
]
monitored_items = [actor.greenlet for actor in top_level_actors]
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v6_filter_updater,
v4_nat_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def test_install_global_ipip_disabled(self, m_ipset, m_devices, m_check_call):
m_devices.interface_exists.return_value = False
m_devices.interface_up.return_value = False
m_set_ips = m_devices.set_interface_ips
env_dict = {
"FELIX_ETCDADDR": "localhost:4001",
"FELIX_HOSTNAME": "myhost",
"FELIX_INTERFACEPREFIX": "tap",
"FELIX_METADATAADDR": "123.0.0.1",
"FELIX_METADATAPORT": "1234",
"FELIX_IPINIPENABLED": "false",
"FELIX_IPINIPMTU": "1480",
"FELIX_DEFAULTENDPOINTTOHOSTACTION": "RETURN"
}
config = load_config("felix_missing.cfg", env_dict=env_dict)
m_v4_upd = Mock(spec=IptablesUpdater)
m_v6_upd = Mock(spec=IptablesUpdater)
m_v6_raw_upd = Mock(spec=IptablesUpdater)
m_v6_nat_upd = Mock(spec=IptablesUpdater)
m_v4_nat_upd = Mock(spec=IptablesUpdater)
frules.install_global_rules(config, m_v4_upd, m_v6_upd, m_v4_nat_upd,
m_v6_nat_upd, m_v6_raw_upd)
self.assertEqual(
m_v4_nat_upd.ensure_rule_inserted.mock_calls,
[call("PREROUTING --jump felix-PREROUTING", async=False),
call("POSTROUTING --jump felix-POSTROUTING", async=False)]
)
self.assertEqual(
m_v4_nat_upd.ensure_rule_removed.mock_calls,
[call("POSTROUTING --out-interface tunl0 "
"-m addrtype ! --src-type LOCAL --limit-iface-out "
"-m addrtype --src-type LOCAL "
"-j MASQUERADE",
async=False)]
)
m_v6_raw_upd.ensure_rule_inserted.assert_called_once_with(
'PREROUTING --in-interface tap+ --match rpfilter --invert --jump '
'felix-PREROUTING',
async=False,
)
m_v6_raw_upd.rewrite_chains.assert_called_once_with(
{'felix-PREROUTING': [
'--append felix-PREROUTING --jump DROP -m comment '
'--comment "IPv6 rpfilter failed"'
]},
{
'felix-PREROUTING': {}
},
async=False
)
self.assertFalse(m_ipset.ensure_exists.called)
self.assertFalse(m_check_call.called)
self.assertFalse(m_set_ips.called)
expected_chains = {
'felix-INPUT': [
'--append felix-INPUT ! --in-interface tap+ --jump RETURN',
'--append felix-INPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-INPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-INPUT --protocol tcp --destination 123.0.0.1 --dport 1234 --jump ACCEPT',
'--append felix-INPUT --protocol udp --sport 68 --dport 67 --jump ACCEPT',
'--append felix-INPUT --protocol udp --dport 53 --jump ACCEPT',
'--append felix-INPUT --jump felix-FROM-ENDPOINT'
],
'felix-FORWARD': [
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --jump felix-FROM-ENDPOINT --in-interface tap+',
'--append felix-FORWARD --jump felix-TO-ENDPOINT --out-interface tap+',
'--append felix-FORWARD --jump ACCEPT --in-interface tap+',
'--append felix-FORWARD --jump ACCEPT --out-interface tap+'
]
}
m_v4_upd.rewrite_chains.assert_called_once_with(
expected_chains,
{
'felix-INPUT': set(['felix-FROM-ENDPOINT']),
'felix-FORWARD': set([
'felix-FROM-ENDPOINT',
'felix-TO-ENDPOINT'
])
},
async=False
)
self.assertEqual(
m_v4_upd.ensure_rule_inserted.mock_calls,
[
call("INPUT --jump felix-INPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False),
]
)
def test_install_global_rules(self, m_ipset, m_devices, m_check_call):
m_devices.interface_exists.return_value = False
m_devices.interface_up.return_value = False
m_set_ips = m_devices.set_interface_ips
env_dict = {
"FELIX_ETCDADDR": "localhost:4001",
"FELIX_HOSTNAME": "myhost",
"FELIX_INTERFACEPREFIX": "tap",
"FELIX_METADATAADDR": "123.0.0.1",
"FELIX_METADATAPORT": "1234",
"FELIX_IPINIPENABLED": "True",
"FELIX_IPINIPMTU": "1480",
"FELIX_DEFAULTENDPOINTTOHOSTACTION": "RETURN"
}
config = load_config("felix_missing.cfg", env_dict=env_dict)
config.IP_IN_IP_ADDR = IPAddress("10.0.0.1")
m_v4_upd = Mock(spec=IptablesUpdater)
m_v6_upd = Mock(spec=IptablesUpdater)
m_v6_raw_upd = Mock(spec=IptablesUpdater)
m_v4_nat_upd = Mock(spec=IptablesUpdater)
m_v6_nat_upd = Mock(spec=IptablesUpdater)
frules.install_global_rules(config, m_v4_upd, m_v4_nat_upd,
ip_version=4)
frules.install_global_rules(config, m_v6_upd, m_v6_nat_upd,
ip_version=6, raw_updater=m_v6_raw_upd)
self.assertEqual(
m_v4_nat_upd.ensure_rule_inserted.mock_calls,
[
call("POSTROUTING --out-interface tunl0 "
"-m addrtype ! --src-type LOCAL --limit-iface-out "
"-m addrtype --src-type LOCAL "
"-j MASQUERADE",
async=False),
call("PREROUTING --jump felix-PREROUTING", async=False),
call("POSTROUTING --jump felix-POSTROUTING", async=False)
]
)
m_v4_upd.ensure_rule_inserted.assert_has_calls([
call("INPUT --jump felix-INPUT", async=False),
call("OUTPUT --jump felix-OUTPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False)
]
)
expected_chains = {
'felix-FIP-DNAT': [],
'felix-FIP-SNAT': [],
'felix-PREROUTING': [
'--append felix-PREROUTING --jump felix-FIP-DNAT',
'--append felix-PREROUTING --protocol tcp --dport 80 --destination '
'169.254.169.254/32 --jump DNAT --to-destination 123.0.0.1:1234'
],
'felix-POSTROUTING': [
'--append felix-POSTROUTING --jump felix-FIP-SNAT'
]
}
m_v4_nat_upd.rewrite_chains.assert_called_once_with(
expected_chains,
{'felix-PREROUTING': set(['felix-FIP-DNAT']),
'felix-POSTROUTING': set(['felix-FIP-SNAT'])},
async=False
)
expected_chains = {
'felix-INPUT': [
'--append felix-INPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-INPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-INPUT --goto felix-FROM-HOST-IF ! --in-interface tap+',
'--append felix-INPUT --protocol tcp --destination 123.0.0.1 --dport 1234 --jump ACCEPT',
'--append felix-INPUT --protocol udp --sport 68 --dport 67 --jump ACCEPT',
'--append felix-INPUT --protocol udp --dport 53 --jump ACCEPT',
'--append felix-INPUT --jump felix-FROM-ENDPOINT'
],
'felix-OUTPUT': [
'--append felix-OUTPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-OUTPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-OUTPUT --goto felix-TO-HOST-IF ! --out-interface tap+',
],
'felix-FORWARD': [
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --jump felix-FROM-ENDPOINT --in-interface tap+',
'--append felix-FORWARD --jump felix-TO-ENDPOINT --out-interface tap+',
'--append felix-FORWARD --jump ACCEPT --in-interface tap+',
'--append felix-FORWARD --jump ACCEPT --out-interface tap+'
],
'felix-FAILSAFE-IN': [
'--append felix-FAILSAFE-IN --protocol tcp --dport 22 --jump ACCEPT'
],
'felix-FAILSAFE-OUT': [
'--append felix-FAILSAFE-OUT --protocol tcp --dport 2379 --jump ACCEPT',
'--append felix-FAILSAFE-OUT --protocol tcp --dport 2380 --jump ACCEPT',
'--append felix-FAILSAFE-OUT --protocol tcp --dport 4001 --jump ACCEPT',
'--append felix-FAILSAFE-OUT --protocol tcp --dport 7001 --jump ACCEPT'
]
}
m_v4_upd.rewrite_chains.assert_called_once_with(
expected_chains,
EXPECTED_TOP_LEVEL_DEPS,
async=False
)
self.assertEqual(
m_v6_nat_upd.ensure_rule_inserted.mock_calls,
[
call("PREROUTING --jump felix-PREROUTING", async=False),
call("POSTROUTING --jump felix-POSTROUTING", async=False),
]
)
m_v6_upd.ensure_rule_inserted.assert_has_calls([
call("INPUT --jump felix-INPUT", async=False),
call("OUTPUT --jump felix-OUTPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False)
]
)
expected_chains = {
'felix-FIP-DNAT': [],
'felix-FIP-SNAT': [],
'felix-PREROUTING': [
'--append felix-PREROUTING --jump felix-FIP-DNAT'
],
'felix-POSTROUTING': [
'--append felix-POSTROUTING --jump felix-FIP-SNAT'
]
}
m_v6_nat_upd.rewrite_chains.assert_called_once_with(
expected_chains, {
'felix-PREROUTING': set(['felix-FIP-DNAT']),
'felix-POSTROUTING': set(['felix-FIP-SNAT'])
}, async=False
)
m_v6_raw_upd.rewrite_chains.assert_called_once_with(
{'felix-PREROUTING': [
'--append felix-PREROUTING --jump DROP -m comment '
'--comment "IPv6 rpfilter failed"'
]},
{
'felix-PREROUTING': {}
},
async=False
)
m_ipset.ensure_exists.assert_called_once_with()
self.assertEqual(
m_check_call.mock_calls,
[
call(["ip", "tunnel", "add", "tunl0", "mode", "ipip"]),
call(["ip", "link", "set", "tunl0", "mtu", "1480"]),
call(["ip", "link", "set", "tunl0", "up"]),
]
)
self.assertEqual(
m_set_ips.mock_calls,
[call(IPV4, "tunl0", set([IPAddress("10.0.0.1")]))]
)
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
v4_filter_updater = IptablesUpdater("filter", ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(4, v4_filter_updater, v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_ep_manager = EndpointManager(config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager,
etcd_api.status_reporter)
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter", ip_version=6,
config=config)
v6_ipset_mgr = IpsetManager(IPV6)
v6_rules_manager = RulesManager(6, v6_filter_updater, v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_ep_manager = EndpointManager(config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager,
etcd_api.status_reporter)
update_splitter = UpdateSplitter(config,
[v4_ipset_mgr, v6_ipset_mgr],
[v4_rules_manager, v6_rules_manager],
[v4_ep_manager, v6_ep_manager],
[v4_filter_updater,
v6_filter_updater,
v6_raw_updater,
v4_nat_updater],
v4_masq_manager)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
update_splitter.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v6_raw_updater.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
update_splitter,
v4_nat_updater,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v6_raw_updater,
v6_filter_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
iface_watcher,
etcd_api,
]
monitored_items = [actor.greenlet for actor in top_level_actors]
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v6_filter_updater,
v4_nat_updater, v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
etcd_watcher = EtcdWatcher(config)
etcd_watcher.start()
# Ask the EtcdWatcher to fill in the global config object before we
# proceed. We don't yet support config updates.
etcd_watcher.load_config(async=False)
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
v4_filter_updater = IptablesUpdater("filter", ip_version=4)
v4_nat_updater = IptablesUpdater("nat", ip_version=4)
v4_ipset_mgr = IpsetManager(IPV4)
v4_rules_manager = RulesManager(4, v4_filter_updater, v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_ep_manager = EndpointManager(config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager)
v6_filter_updater = IptablesUpdater("filter", ip_version=6)
v6_ipset_mgr = IpsetManager(IPV6)
v6_rules_manager = RulesManager(6, v6_filter_updater, v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_ep_manager = EndpointManager(config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager)
update_splitter = UpdateSplitter(config,
[v4_ipset_mgr, v6_ipset_mgr],
[v4_rules_manager, v6_rules_manager],
[v4_ep_manager, v6_ep_manager],
[v4_filter_updater, v6_filter_updater])
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
update_splitter.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
iface_watcher.start()
monitored_items = [
update_splitter.greenlet,
v4_nat_updater.greenlet,
v4_filter_updater.greenlet,
v4_nat_updater.greenlet,
v4_ipset_mgr.greenlet,
v4_rules_manager.greenlet,
v4_dispatch_chains.greenlet,
v4_ep_manager.greenlet,
v6_filter_updater.greenlet,
v6_ipset_mgr.greenlet,
v6_rules_manager.greenlet,
v6_dispatch_chains.greenlet,
v6_ep_manager.greenlet,
iface_watcher.greenlet,
etcd_watcher.greenlet
]
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v6_filter_updater,
v4_nat_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
f = etcd_watcher.watch_etcd(update_splitter, async=True)
monitored_items.append(f)
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining " "actors...")
monitored_items = []
if config.PROM_METRICS_ENABLED:
httpd = HTTPServer(("0.0.0.0", config.PROM_METRICS_PORT), MetricsHandler)
stats_server = gevent.Greenlet(httpd.serve_forever)
stats_server.start()
monitored_items.append(stats_server)
v4_filter_updater = IptablesUpdater("filter", ip_version=4, config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config, 4, v4_filter_updater, v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(
config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager,
v4_fip_manager,
etcd_api.status_reporter,
)
cleanup_updaters = [v4_filter_updater, v4_nat_updater]
cleanup_ip_mgrs = [v4_ipset_mgr]
update_splitter_args = [v4_ipset_mgr, v4_rules_manager, v4_ep_manager, v4_masq_manager, v4_nat_updater]
v6_enabled = os.path.exists("/proc/sys/net/ipv6")
if v6_enabled:
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter", ip_version=6, config=config)
v6_nat_updater = IptablesUpdater("nat", ip_version=6, config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config, 6, v6_filter_updater, v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(
config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager,
v6_fip_manager,
etcd_api.status_reporter,
)
cleanup_updaters.append(v6_filter_updater)
cleanup_ip_mgrs.append(v6_ipset_mgr)
update_splitter_args += [v6_ipset_mgr, v6_rules_manager, v6_ep_manager, v6_raw_updater, v6_nat_updater]
cleanup_mgr = CleanupManager(config, cleanup_updaters, cleanup_ip_mgrs)
update_splitter_args.append(cleanup_mgr)
update_splitter = UpdateSplitter(update_splitter_args)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
cleanup_mgr.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v4_fip_manager.start()
if v6_enabled:
v6_raw_updater.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_nat_updater.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
v6_fip_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
cleanup_mgr,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
iface_watcher,
etcd_api,
]
if v6_enabled:
top_level_actors += [
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
]
monitored_items += [actor.greenlet for actor in top_level_actors]
# Try to ensure that the nf_conntrack_netlink kernel module is present.
# This works around an issue[1] where the first call to the "conntrack"
# command fails while waiting for the module to load.
# [1] https://github.com/projectcalico/calico/issues/986
load_nf_conntrack()
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v4_nat_updater, ip_version=4)
if v6_enabled:
install_global_rules(config, v6_filter_updater, v6_nat_updater, ip_version=6, raw_updater=v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
monitored_items = []
if config.PROM_METRICS_ENABLED:
httpd = HTTPServer(("0.0.0.0", config.PROM_METRICS_PORT),
MetricsHandler)
stats_server = gevent.Greenlet(httpd.serve_forever)
stats_server.start()
monitored_items.append(stats_server)
v4_filter_updater = IptablesUpdater("filter", ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config,
4,
v4_filter_updater,
v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager,
v4_fip_manager,
etcd_api.status_reporter)
cleanup_updaters = [v4_filter_updater, v4_nat_updater]
cleanup_ip_mgrs = [v4_ipset_mgr]
update_splitter_args = [v4_ipset_mgr,
v4_rules_manager,
v4_ep_manager,
v4_masq_manager,
v4_nat_updater]
v6_enabled = os.path.exists("/proc/sys/net/ipv6")
if v6_enabled:
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter", ip_version=6,
config=config)
v6_nat_updater = IptablesUpdater("nat", ip_version=6, config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config,
6,
v6_filter_updater,
v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager,
v6_fip_manager,
etcd_api.status_reporter)
cleanup_updaters.append(v6_filter_updater)
cleanup_ip_mgrs.append(v6_ipset_mgr)
update_splitter_args += [v6_ipset_mgr,
v6_rules_manager,
v6_ep_manager,
v6_raw_updater,
v6_nat_updater]
cleanup_mgr = CleanupManager(config, cleanup_updaters, cleanup_ip_mgrs)
update_splitter_args.append(cleanup_mgr)
update_splitter = UpdateSplitter(update_splitter_args)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
cleanup_mgr.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v4_fip_manager.start()
if v6_enabled:
v6_raw_updater.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_nat_updater.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
v6_fip_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
cleanup_mgr,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
iface_watcher,
etcd_api,
]
if v6_enabled:
top_level_actors += [
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
]
monitored_items += [actor.greenlet for actor in top_level_actors]
# Try to ensure that the nf_conntrack_netlink kernel module is present.
# This works around an issue[1] where the first call to the "conntrack"
# command fails while waiting for the module to load.
# [1] https://github.com/projectcalico/calico/issues/986
load_nf_conntrack()
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v4_nat_updater,
ip_version=4)
if v6_enabled:
install_global_rules(config, v6_filter_updater, v6_nat_updater,
ip_version=6, raw_updater=v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def test_install_global_rules(self, m_ipset, m_devices, m_check_call):
m_devices.interface_exists.return_value = False
m_devices.interface_up.return_value = False
m_set_ips = m_devices.set_interface_ips
env_dict = {
"FELIX_ETCDADDR": "localhost:4001",
"FELIX_HOSTNAME": "myhost",
"FELIX_INTERFACEPREFIX": "tap",
"FELIX_METADATAADDR": "123.0.0.1",
"FELIX_METADATAPORT": "1234",
"FELIX_IPINIPENABLED": "True",
"FELIX_IPINIPMTU": "1480",
"FELIX_DEFAULTENDPOINTTOHOSTACTION": "RETURN"
}
config = load_config("felix_missing.cfg", env_dict=env_dict)
config.IP_IN_IP_ADDR = IPAddress("10.0.0.1")
m_v4_upd = Mock(spec=IptablesUpdater)
m_v6_upd = Mock(spec=IptablesUpdater)
m_v6_raw_upd = Mock(spec=IptablesUpdater)
m_v4_nat_upd = Mock(spec=IptablesUpdater)
m_v6_nat_upd = Mock(spec=IptablesUpdater)
frules.install_global_rules(config,
m_v4_upd,
m_v4_nat_upd,
ip_version=4)
frules.install_global_rules(config,
m_v6_upd,
m_v6_nat_upd,
ip_version=6,
raw_updater=m_v6_raw_upd)
self.assertEqual(m_v4_nat_upd.ensure_rule_inserted.mock_calls, [
call(
"POSTROUTING --out-interface tunl0 "
"-m addrtype ! --src-type LOCAL --limit-iface-out "
"-m addrtype --src-type LOCAL "
"-j MASQUERADE",
async=False),
call("PREROUTING --jump felix-PREROUTING", async=False),
call("POSTROUTING --jump felix-POSTROUTING", async=False)
])
m_v4_upd.ensure_rule_inserted.assert_has_calls([
call("INPUT --jump felix-INPUT", async=False),
call("OUTPUT --jump felix-OUTPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False)
])
expected_chains = {
'felix-FIP-DNAT': [],
'felix-FIP-SNAT': [],
'felix-PREROUTING': [
'--append felix-PREROUTING --jump felix-FIP-DNAT',
'--append felix-PREROUTING --protocol tcp --dport 80 --destination '
'169.254.169.254/32 --jump DNAT --to-destination 123.0.0.1:1234'
],
'felix-POSTROUTING':
['--append felix-POSTROUTING --jump felix-FIP-SNAT']
}
m_v4_nat_upd.rewrite_chains.assert_called_once_with(
expected_chains, {
'felix-PREROUTING': set(['felix-FIP-DNAT']),
'felix-POSTROUTING': set(['felix-FIP-SNAT'])
},
async=False)
expected_chains = {
'felix-INPUT': [
'--append felix-INPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-INPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-INPUT --jump MARK --set-mark 0/0x4000000',
'--append felix-INPUT --in-interface tap+ --jump MARK --set-mark 0x4000000/0x4000000',
'--append felix-INPUT --goto felix-FROM-HOST-IF --match mark --mark 0/0x4000000',
'--append felix-INPUT --protocol tcp --destination 123.0.0.1 --dport 1234 --jump ACCEPT',
'--append felix-INPUT --protocol udp --sport 68 --dport 67 --jump ACCEPT',
'--append felix-INPUT --protocol udp --dport 53 --jump ACCEPT',
'--append felix-INPUT --jump felix-FROM-ENDPOINT'
],
'felix-OUTPUT': [
'--append felix-OUTPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-OUTPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-OUTPUT --jump MARK --set-mark 0/0x4000000',
'--append felix-OUTPUT --out-interface tap+ --jump MARK --set-mark 0x4000000/0x4000000',
'--append felix-OUTPUT --goto felix-TO-HOST-IF --match mark --mark 0/0x4000000',
],
'felix-FORWARD': [
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-FORWARD --jump felix-FROM-ENDPOINT --in-interface tap+',
'--append felix-FORWARD --jump felix-TO-ENDPOINT --out-interface tap+',
'--append felix-FORWARD --jump ACCEPT --in-interface tap+',
'--append felix-FORWARD --jump ACCEPT --out-interface tap+'
],
'felix-FAILSAFE-IN': [
'--append felix-FAILSAFE-IN --protocol tcp --dport 22 --jump ACCEPT'
],
'felix-FAILSAFE-OUT': [
'--append felix-FAILSAFE-OUT --protocol tcp --dport 2379 --jump ACCEPT',
'--append felix-FAILSAFE-OUT --protocol tcp --dport 2380 --jump ACCEPT',
'--append felix-FAILSAFE-OUT --protocol tcp --dport 4001 --jump ACCEPT',
'--append felix-FAILSAFE-OUT --protocol tcp --dport 7001 --jump ACCEPT'
]
}
m_v4_upd.rewrite_chains.assert_called_once_with(
expected_chains, EXPECTED_TOP_LEVEL_DEPS, async=False)
self.assertEqual(m_v6_nat_upd.ensure_rule_inserted.mock_calls, [
call("PREROUTING --jump felix-PREROUTING", async=False),
call("POSTROUTING --jump felix-POSTROUTING", async=False),
])
m_v6_upd.ensure_rule_inserted.assert_has_calls([
call("INPUT --jump felix-INPUT", async=False),
call("OUTPUT --jump felix-OUTPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False)
])
expected_chains = {
'felix-FIP-DNAT': [],
'felix-FIP-SNAT': [],
'felix-PREROUTING':
['--append felix-PREROUTING --jump felix-FIP-DNAT'],
'felix-POSTROUTING':
['--append felix-POSTROUTING --jump felix-FIP-SNAT']
}
m_v6_nat_upd.rewrite_chains.assert_called_once_with(
expected_chains, {
'felix-PREROUTING': set(['felix-FIP-DNAT']),
'felix-POSTROUTING': set(['felix-FIP-SNAT'])
},
async=False)
m_v6_raw_upd.rewrite_chains.assert_called_once_with(
{
'felix-PREROUTING': [
'--append felix-PREROUTING --jump DROP -m comment '
'--comment "IPv6 rpfilter failed"'
]
}, {'felix-PREROUTING': {}},
async=False)
m_ipset.ensure_exists.assert_called_once_with()
self.assertEqual(m_check_call.mock_calls, [
call(["ip", "tunnel", "add", "tunl0", "mode", "ipip"]),
call(["ip", "link", "set", "tunl0", "mtu", "1480"]),
call(["ip", "link", "set", "tunl0", "up"]),
])
self.assertEqual(m_set_ips.mock_calls,
[call(IPV4, "tunl0", set([IPAddress("10.0.0.1")]))])
def test_install_global_rules(self, m_ipset, m_devices, m_check_call):
m_devices.interface_exists.return_value = False
m_devices.interface_up.return_value = False
m_config = Mock(spec=Config)
m_config.IP_IN_IP_ENABLED = True
m_config.IP_IN_IP_MTU = 1480
m_config.METADATA_IP = "123.0.0.1"
m_config.METADATA_PORT = 1234
m_config.DEFAULT_INPUT_CHAIN_ACTION = "RETURN"
m_config.IFACE_PREFIX = "tap"
m_v4_upd = Mock(spec=IptablesUpdater)
m_v6_upd = Mock(spec=IptablesUpdater)
m_v6_raw_upd = Mock(spec=IptablesUpdater)
m_v4_nat_upd = Mock(spec=IptablesUpdater)
frules.install_global_rules(m_config, m_v4_upd, m_v6_upd, m_v4_nat_upd,
m_v6_raw_upd)
m_v6_raw_upd.ensure_rule_inserted.assert_called_once_with(
'PREROUTING --in-interface tap+ --match rpfilter --invert -j DROP',
async=False,
)
m_ipset.ensure_exists.assert_called_once_with()
self.assertEqual(
m_check_call.mock_calls,
[
call(["ip", "tunnel", "add", "tunl0", "mode", "ipip"]),
call(["ip", "link", "set", "tunl0", "mtu", "1480"]),
call(["ip", "link", "set", "tunl0", "up"]),
]
)
expected_chains = {
'felix-INPUT': [
'--append felix-INPUT ! --in-interface tap+ --jump RETURN',
'--append felix-INPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-INPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-INPUT --protocol tcp --destination 123.0.0.1 --dport 1234 --jump ACCEPT',
'--append felix-INPUT --protocol udp --sport 68 --dport 67 --jump ACCEPT',
'--append felix-INPUT --protocol udp --dport 53 --jump ACCEPT',
'--append felix-INPUT --jump felix-FROM-ENDPOINT'
],
'felix-FORWARD': [
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --jump felix-FROM-ENDPOINT --in-interface tap+',
'--append felix-FORWARD --jump felix-TO-ENDPOINT --out-interface tap+',
'--append felix-FORWARD --jump ACCEPT --in-interface tap+',
'--append felix-FORWARD --jump ACCEPT --out-interface tap+'
]
}
m_v4_upd.rewrite_chains.assert_called_once_with(
expected_chains,
{
'felix-INPUT': set(['felix-FROM-ENDPOINT']),
'felix-FORWARD': set([
'felix-FROM-ENDPOINT',
'felix-TO-ENDPOINT'
])
},
async=False
)
self.assertEqual(
m_v4_upd.ensure_rule_inserted.mock_calls,
[
call("INPUT --jump felix-INPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False),
]
)
def test_install_global_rules(self, m_ipset, m_devices, m_check_call):
m_devices.interface_exists.return_value = False
m_devices.interface_up.return_value = False
m_config = Mock(spec=Config)
m_config.IP_IN_IP_ENABLED = True
m_config.METADATA_IP = "123.0.0.1"
m_config.METADATA_PORT = 1234
m_config.DEFAULT_INPUT_CHAIN_ACTION = "RETURN"
m_config.IFACE_PREFIX = "tap"
m_v4_upd = Mock(spec=IptablesUpdater)
m_v6_upd = Mock(spec=IptablesUpdater)
m_v4_nat_upd = Mock(spec=IptablesUpdater)
frules.install_global_rules(m_config, m_v4_upd, m_v6_upd, m_v4_nat_upd)
m_ipset.ensure_exists.assert_called_once_with()
self.assertEqual(
m_check_call.mock_calls,
[
call(["ip", "tunnel", "add", "tunl0", "mode", "ipip"]),
call(["ip", "link", "set", "tunl0", "up"]),
]
)
expected_chains = {
'felix-INPUT': [
'--append felix-INPUT ! --in-interface tap+ --jump RETURN',
'--append felix-INPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-INPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-INPUT --protocol tcp --destination 123.0.0.1 --dport 1234 --jump ACCEPT',
'--append felix-INPUT --protocol udp --sport 68 --dport 67 --jump ACCEPT',
'--append felix-INPUT --protocol udp --dport 53 --jump ACCEPT',
'--append felix-INPUT --jump felix-FROM-ENDPOINT'
],
'felix-FORWARD': [
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --jump felix-FROM-ENDPOINT --in-interface tap+',
'--append felix-FORWARD --jump felix-TO-ENDPOINT --out-interface tap+',
'--append felix-FORWARD --jump ACCEPT --in-interface tap+',
'--append felix-FORWARD --jump ACCEPT --out-interface tap+'
]
}
m_v4_upd.rewrite_chains.assert_called_once_with(
expected_chains,
{
'felix-INPUT': set(['felix-FROM-ENDPOINT']),
'felix-FORWARD': set([
'felix-FROM-ENDPOINT',
'felix-TO-ENDPOINT'
])
},
async=False
)
self.assertEqual(
m_v4_upd.ensure_rule_inserted.mock_calls,
[
call("INPUT --jump felix-INPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False),
]
)
def test_install_global_ipip_disabled(self, m_ipset, m_devices, m_check_call):
m_devices.interface_exists.return_value = False
m_devices.interface_up.return_value = False
m_set_ips = m_devices.set_interface_ips
env_dict = {
"FELIX_ETCDADDR": "localhost:4001",
"FELIX_HOSTNAME": "myhost",
"FELIX_INTERFACEPREFIX": "tap",
"FELIX_METADATAADDR": "123.0.0.1",
"FELIX_METADATAPORT": "1234",
"FELIX_IPINIPENABLED": "false",
"FELIX_IPINIPMTU": "1480",
"FELIX_DEFAULTENDPOINTTOHOSTACTION": "RETURN"
}
config = load_config("felix_missing.cfg", env_dict=env_dict)
m_v4_upd = Mock(spec=IptablesUpdater)
m_v6_upd = Mock(spec=IptablesUpdater)
m_v6_raw_upd = Mock(spec=IptablesUpdater)
m_v4_nat_upd = Mock(spec=IptablesUpdater)
frules.install_global_rules(config, m_v4_upd, m_v6_upd, m_v4_nat_upd,
m_v6_raw_upd)
self.assertEqual(
m_v4_nat_upd.ensure_rule_inserted.mock_calls,
[call("PREROUTING --jump felix-PREROUTING", async=False)]
)
self.assertEqual(
m_v4_nat_upd.ensure_rule_removed.mock_calls,
[call("POSTROUTING --out-interface tunl0 "
"-m addrtype ! --src-type LOCAL --limit-iface-out "
"-m addrtype --src-type LOCAL "
"-j MASQUERADE",
async=False)]
)
m_v6_raw_upd.ensure_rule_inserted.assert_called_once_with(
'PREROUTING --in-interface tap+ --match rpfilter --invert --jump '
'felix-PREROUTING',
async=False,
)
m_v6_raw_upd.rewrite_chains.assert_called_once_with(
{'felix-PREROUTING': [
'--append felix-PREROUTING --jump DROP -m comment '
'--comment "IPv6 rpfilter failed"'
]},
{
'felix-PREROUTING': {}
},
async=False
)
self.assertFalse(m_ipset.ensure_exists.called)
self.assertFalse(m_check_call.called)
self.assertFalse(m_set_ips.called)
expected_chains = {
'felix-INPUT': [
'--append felix-INPUT ! --in-interface tap+ --jump RETURN',
'--append felix-INPUT --match conntrack --ctstate INVALID --jump DROP',
'--append felix-INPUT --match conntrack --ctstate RELATED,ESTABLISHED --jump ACCEPT',
'--append felix-INPUT --protocol tcp --destination 123.0.0.1 --dport 1234 --jump ACCEPT',
'--append felix-INPUT --protocol udp --sport 68 --dport 67 --jump ACCEPT',
'--append felix-INPUT --protocol udp --dport 53 --jump ACCEPT',
'--append felix-INPUT --jump felix-FROM-ENDPOINT'
],
'felix-FORWARD': [
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate INVALID --jump DROP',
'--append felix-FORWARD --in-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --out-interface tap+ --match conntrack --ctstate RELATED,ESTABLISHED --jump RETURN',
'--append felix-FORWARD --jump felix-FROM-ENDPOINT --in-interface tap+',
'--append felix-FORWARD --jump felix-TO-ENDPOINT --out-interface tap+',
'--append felix-FORWARD --jump ACCEPT --in-interface tap+',
'--append felix-FORWARD --jump ACCEPT --out-interface tap+'
]
}
m_v4_upd.rewrite_chains.assert_called_once_with(
expected_chains,
{
'felix-INPUT': set(['felix-FROM-ENDPOINT']),
'felix-FORWARD': set([
'felix-FROM-ENDPOINT',
'felix-TO-ENDPOINT'
])
},
async=False
)
self.assertEqual(
m_v4_upd.ensure_rule_inserted.mock_calls,
[
call("INPUT --jump felix-INPUT", async=False),
call("FORWARD --jump felix-FORWARD", async=False),
]
)
def _main_greenlet():
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
monitored_items = []
# The parent process sends us communication pipes as FD 3 and 4. Open
# those as files. Wrap the resulting files in a FileObject to make
# them cooperate with gevent.
pipe_from_parent = FileObject(os.fdopen(3, 'rb', -1), 'rb')
pipe_to_parent = FileObject(os.fdopen(4, 'wb', -1), 'wb')
config = Config()
datastore = DatastoreAPI(config, pipe_from_parent, pipe_to_parent,
hosts_ipset_v4)
datastore.start()
monitored_items.append(datastore.greenlet)
# Ask the DatastoreAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = datastore.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config(config)
# Check the commands we require are present.
futils.check_command_deps()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
if config.PROM_METRICS_ENABLED:
httpd = HTTPServer(("0.0.0.0", config.PROM_METRICS_DRIVER_PORT),
MetricsHandler)
stats_server = gevent.Greenlet(httpd.serve_forever)
stats_server.start()
monitored_items.append(stats_server)
v4_filter_updater = IptablesUpdater("filter",
ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config, 4, v4_filter_updater,
v4_ipset_mgr)
v4_ep_dispatch_chains = WorkloadDispatchChains(config, 4,
v4_filter_updater)
v4_if_dispatch_chains = HostEndpointDispatchChains(
config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(config, IPV4, v4_filter_updater,
v4_ep_dispatch_chains,
v4_if_dispatch_chains,
v4_rules_manager, v4_fip_manager,
datastore.write_api)
cleanup_updaters = [v4_filter_updater, v4_nat_updater]
cleanup_ip_mgrs = [v4_ipset_mgr]
managers = [
v4_ipset_mgr, v4_rules_manager, v4_ep_manager, v4_masq_manager,
v4_nat_updater
]
actors_to_start = [
hosts_ipset_v4,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_ep_dispatch_chains,
v4_if_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
]
# Determine if ipv6 is enabled using the config option.
if config.IPV6_SUPPORT == "true":
v6_enabled = True
ipv6_reason = None
elif config.IPV6_SUPPORT == "auto":
v6_enabled, ipv6_reason = futils.detect_ipv6_supported()
else:
v6_enabled = False
ipv6_reason = "Ipv6Support is 'false'"
if v6_enabled:
v6_raw_updater = IptablesUpdater("raw",
ip_version=6,
config=config)
v6_filter_updater = IptablesUpdater("filter",
ip_version=6,
config=config)
v6_nat_updater = IptablesUpdater("nat",
ip_version=6,
config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config, 6, v6_filter_updater,
v6_ipset_mgr)
v6_ep_dispatch_chains = WorkloadDispatchChains(
config, 6, v6_filter_updater)
v6_if_dispatch_chains = HostEndpointDispatchChains(
config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(config, IPV6, v6_filter_updater,
v6_ep_dispatch_chains,
v6_if_dispatch_chains,
v6_rules_manager, v6_fip_manager,
datastore.write_api)
cleanup_updaters.append(v6_filter_updater)
cleanup_ip_mgrs.append(v6_ipset_mgr)
managers += [
v6_ipset_mgr, v6_rules_manager, v6_ep_manager, v6_raw_updater,
v6_nat_updater
]
actors_to_start += [
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_ep_dispatch_chains,
v6_if_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
]
else:
# Keep the linter happy.
_log.warn("IPv6 support disabled: %s.", ipv6_reason)
v6_filter_updater = None
v6_nat_updater = None
v6_raw_updater = None
v6_if_dispatch_chains = None
cleanup_mgr = CleanupManager(config, cleanup_updaters, cleanup_ip_mgrs)
managers.append(cleanup_mgr)
update_splitter = UpdateSplitter(managers)
iface_watcher = InterfaceWatcher(update_splitter)
actors_to_start += [
cleanup_mgr,
iface_watcher,
]
_log.info("Starting actors.")
for actor in actors_to_start:
actor.start()
monitored_items += [actor.greenlet for actor in actors_to_start]
# Try to ensure that the nf_conntrack_netlink kernel module is present.
# This works around an issue[1] where the first call to the "conntrack"
# command fails while waiting for the module to load.
# [1] https://github.com/projectcalico/felix/issues/986
load_nf_conntrack()
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
# Dispatch chain needs to make its configuration before we insert the
# top-level chains.
v4_if_dispatch_chains.configure_iptables(async=False)
install_global_rules(config,
v4_filter_updater,
v4_nat_updater,
ip_version=4)
if v6_enabled:
# Dispatch chain needs to make its configuration before we insert
# the top-level chains.
v6_if_dispatch_chains.configure_iptables(async=False)
install_global_rules(config,
v6_filter_updater,
v6_nat_updater,
ip_version=6,
raw_updater=v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
datastore.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in actors_to_start:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
gevent.signal(signal.SIGTERM, functools.partial(shut_down, datastore))
gevent.signal(signal.SIGINT, functools.partial(shut_down, datastore))
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
