diff options
| -rw-r--r-- | cloudinit/config/cc_lxd.py | 64 | ||||
| -rw-r--r-- | tests/unittests/test_handler/test_handler_lxd.py | 80 |
2 files changed, 120 insertions, 24 deletions
diff --git a/cloudinit/config/cc_lxd.py b/cloudinit/config/cc_lxd.py index 09374d2e..ac72ac4a 100644 --- a/cloudinit/config/cc_lxd.py +++ b/cloudinit/config/cc_lxd.py @@ -47,11 +47,16 @@ lxd-bridge will be configured accordingly. domain: <domain> """ +from cloudinit import log as logging from cloudinit import util import os distros = ['ubuntu'] +LOG = logging.getLogger(__name__) + +_DEFAULT_NETWORK_NAME = "lxdbr0" + def handle(name, cfg, cloud, log, args): # Get config @@ -109,6 +114,7 @@ def handle(name, cfg, cloud, log, args): # Set up lxd-bridge if bridge config is given dconf_comm = "debconf-communicate" if bridge_cfg: + net_name = bridge_cfg.get("name", _DEFAULT_NETWORK_NAME) if os.path.exists("/etc/default/lxd-bridge") \ and util.which(dconf_comm): # Bridge configured through packaging @@ -135,15 +141,18 @@ def handle(name, cfg, cloud, log, args): else: # Built-in LXD bridge support cmd_create, cmd_attach = bridge_to_cmd(bridge_cfg) + maybe_cleanup_default( + net_name=net_name, did_init=bool(init_cfg), + create=bool(cmd_create), attach=bool(cmd_attach)) if cmd_create: log.debug("Creating lxd bridge: %s" % " ".join(cmd_create)) - util.subp(cmd_create) + _lxc(cmd_create) if cmd_attach: log.debug("Setting up default lxd bridge: %s" % " ".join(cmd_create)) - util.subp(cmd_attach) + _lxc(cmd_attach) elif bridge_cfg: raise RuntimeError( @@ -204,10 +213,10 @@ def bridge_to_cmd(bridge_cfg): if bridge_cfg.get("mode") == "none": return None, None - bridge_name = bridge_cfg.get("name", "lxdbr0") + bridge_name = bridge_cfg.get("name", _DEFAULT_NETWORK_NAME) cmd_create = [] - cmd_attach = ["lxc", "network", "attach-profile", bridge_name, - "default", "eth0", "--force-local"] + cmd_attach = ["network", "attach-profile", bridge_name, + "default", "eth0"] if bridge_cfg.get("mode") == "existing": return None, cmd_attach @@ -215,7 +224,7 @@ def bridge_to_cmd(bridge_cfg): if bridge_cfg.get("mode") != "new": raise Exception("invalid bridge mode \"%s\"" % bridge_cfg.get("mode")) - cmd_create = ["lxc", "network", "create", bridge_name] + cmd_create = ["network", "create", bridge_name] if bridge_cfg.get("ipv4_address") and bridge_cfg.get("ipv4_netmask"): cmd_create.append("ipv4.address=%s/%s" % @@ -247,8 +256,47 @@ def bridge_to_cmd(bridge_cfg): if bridge_cfg.get("domain"): cmd_create.append("dns.domain=%s" % bridge_cfg.get("domain")) - cmd_create.append("--force-local") - return cmd_create, cmd_attach + +def _lxc(cmd): + env = {'LC_ALL': 'C'} + util.subp(['lxc'] + list(cmd) + ["--force-local"], update_env=env) + + +def maybe_cleanup_default(net_name, did_init, create, attach, + profile="default", nic_name="eth0"): + """Newer versions of lxc (3.0.1+) create a lxdbr0 network when + 'lxd init --auto' is run. Older versions did not. + + By removing ay that lxd-init created, we simply leave the add/attach + code in-tact. + + https://github.com/lxc/lxd/issues/4649""" + if net_name != _DEFAULT_NETWORK_NAME or not did_init: + return + + fail_assume_enoent = " failed. Assuming it did not exist." + succeeded = " succeeded." + if create: + msg = "Deletion of lxd network '%s'" % net_name + try: + _lxc(["network", "delete", net_name]) + LOG.debug(msg + succeeded) + except util.ProcessExecutionError as e: + if e.exit_code != 1: + raise e + LOG.debug(msg + fail_assume_enoent) + + if attach: + msg = "Removal of device '%s' from profile '%s'" % (nic_name, profile) + try: + _lxc(["profile", "device", "remove", profile, nic_name]) + LOG.debug(msg + succeeded) + except util.ProcessExecutionError as e: + if e.exit_code != 1: + raise e + LOG.debug(msg + fail_assume_enoent) + + # vi: ts=4 expandtab diff --git a/tests/unittests/test_handler/test_handler_lxd.py b/tests/unittests/test_handler/test_handler_lxd.py index a2054980..4dd7e09f 100644 --- a/tests/unittests/test_handler/test_handler_lxd.py +++ b/tests/unittests/test_handler/test_handler_lxd.py @@ -33,12 +33,16 @@ class TestLxd(t_help.CiTestCase): cc = cloud.Cloud(ds, paths, {}, d, None) return cc + @mock.patch("cloudinit.config.cc_lxd.maybe_cleanup_default") @mock.patch("cloudinit.config.cc_lxd.util") - def test_lxd_init(self, mock_util): + def test_lxd_init(self, mock_util, m_maybe_clean): cc = self._get_cloud('ubuntu') mock_util.which.return_value = True + m_maybe_clean.return_value = None cc_lxd.handle('cc_lxd', self.lxd_cfg, cc, self.logger, []) self.assertTrue(mock_util.which.called) + # no bridge config, so maybe_cleanup should not be called. + self.assertFalse(m_maybe_clean.called) init_call = mock_util.subp.call_args_list[0][0][0] self.assertEqual(init_call, ['lxd', 'init', '--auto', @@ -46,32 +50,39 @@ class TestLxd(t_help.CiTestCase): '--storage-backend=zfs', '--storage-pool=poolname']) + @mock.patch("cloudinit.config.cc_lxd.maybe_cleanup_default") @mock.patch("cloudinit.config.cc_lxd.util") - def test_lxd_install(self, mock_util): + def test_lxd_install(self, mock_util, m_maybe_clean): cc = self._get_cloud('ubuntu') cc.distro = mock.MagicMock() mock_util.which.return_value = None cc_lxd.handle('cc_lxd', self.lxd_cfg, cc, self.logger, []) self.assertNotIn('WARN', self.logs.getvalue()) self.assertTrue(cc.distro.install_packages.called) + cc_lxd.handle('cc_lxd', self.lxd_cfg, cc, self.logger, []) + self.assertFalse(m_maybe_clean.called) install_pkg = cc.distro.install_packages.call_args_list[0][0][0] self.assertEqual(sorted(install_pkg), ['lxd', 'zfs']) + @mock.patch("cloudinit.config.cc_lxd.maybe_cleanup_default") @mock.patch("cloudinit.config.cc_lxd.util") - def test_no_init_does_nothing(self, mock_util): + def test_no_init_does_nothing(self, mock_util, m_maybe_clean): cc = self._get_cloud('ubuntu') cc.distro = mock.MagicMock() cc_lxd.handle('cc_lxd', {'lxd': {}}, cc, self.logger, []) self.assertFalse(cc.distro.install_packages.called) self.assertFalse(mock_util.subp.called) + self.assertFalse(m_maybe_clean.called) + @mock.patch("cloudinit.config.cc_lxd.maybe_cleanup_default") @mock.patch("cloudinit.config.cc_lxd.util") - def test_no_lxd_does_nothing(self, mock_util): + def test_no_lxd_does_nothing(self, mock_util, m_maybe_clean): cc = self._get_cloud('ubuntu') cc.distro = mock.MagicMock() cc_lxd.handle('cc_lxd', {'package_update': True}, cc, self.logger, []) self.assertFalse(cc.distro.install_packages.called) self.assertFalse(mock_util.subp.called) + self.assertFalse(m_maybe_clean.called) def test_lxd_debconf_new_full(self): data = {"mode": "new", @@ -147,14 +158,13 @@ class TestLxd(t_help.CiTestCase): "domain": "lxd"} self.assertEqual( cc_lxd.bridge_to_cmd(data), - (["lxc", "network", "create", "testbr0", + (["network", "create", "testbr0", "ipv4.address=10.0.8.1/24", "ipv4.nat=true", "ipv4.dhcp.ranges=10.0.8.2-10.0.8.254", "ipv6.address=fd98:9e0:3744::1/64", - "ipv6.nat=true", "dns.domain=lxd", - "--force-local"], - ["lxc", "network", "attach-profile", - "testbr0", "default", "eth0", "--force-local"])) + "ipv6.nat=true", "dns.domain=lxd"], + ["network", "attach-profile", + "testbr0", "default", "eth0"])) def test_lxd_cmd_new_partial(self): data = {"mode": "new", @@ -163,19 +173,18 @@ class TestLxd(t_help.CiTestCase): "ipv6_nat": "true"} self.assertEqual( cc_lxd.bridge_to_cmd(data), - (["lxc", "network", "create", "lxdbr0", "ipv4.address=none", - "ipv6.address=fd98:9e0:3744::1/64", "ipv6.nat=true", - "--force-local"], - ["lxc", "network", "attach-profile", - "lxdbr0", "default", "eth0", "--force-local"])) + (["network", "create", "lxdbr0", "ipv4.address=none", + "ipv6.address=fd98:9e0:3744::1/64", "ipv6.nat=true"], + ["network", "attach-profile", + "lxdbr0", "default", "eth0"])) def test_lxd_cmd_existing(self): data = {"mode": "existing", "name": "testbr0"} self.assertEqual( cc_lxd.bridge_to_cmd(data), - (None, ["lxc", "network", "attach-profile", - "testbr0", "default", "eth0", "--force-local"])) + (None, ["network", "attach-profile", + "testbr0", "default", "eth0"])) def test_lxd_cmd_none(self): data = {"mode": "none"} @@ -183,4 +192,43 @@ class TestLxd(t_help.CiTestCase): cc_lxd.bridge_to_cmd(data), (None, None)) + +class TestLxdMaybeCleanupDefault(t_help.CiTestCase): + """Test the implementation of maybe_cleanup_default.""" + + defnet = cc_lxd._DEFAULT_NETWORK_NAME + + @mock.patch("cloudinit.config.cc_lxd._lxc") + def test_network_other_than_default_not_deleted(self, m_lxc): + """deletion or removal should only occur if bridge is default.""" + cc_lxd.maybe_cleanup_default( + net_name="lxdbr1", did_init=True, create=True, attach=True) + m_lxc.assert_not_called() + + @mock.patch("cloudinit.config.cc_lxd._lxc") + def test_did_init_false_does_not_delete(self, m_lxc): + """deletion or removal should only occur if did_init is True.""" + cc_lxd.maybe_cleanup_default( + net_name=self.defnet, did_init=False, create=True, attach=True) + m_lxc.assert_not_called() + + @mock.patch("cloudinit.config.cc_lxd._lxc") + def test_network_deleted_if_create_true(self, m_lxc): + """deletion of network should occur if create is True.""" + cc_lxd.maybe_cleanup_default( + net_name=self.defnet, did_init=True, create=True, attach=False) + m_lxc.assert_called_once_with(["network", "delete", self.defnet]) + + @mock.patch("cloudinit.config.cc_lxd._lxc") + def test_device_removed_if_attach_true(self, m_lxc): + """deletion of network should occur if create is True.""" + nic_name = "my_nic" + profile = "my_profile" + cc_lxd.maybe_cleanup_default( + net_name=self.defnet, did_init=True, create=False, attach=True, + profile=profile, nic_name=nic_name) + m_lxc.assert_called_once_with( + ["profile", "device", "remove", profile, nic_name]) + + # vi: ts=4 expandtab |