diff options
Diffstat (limited to 'tests/unittests/config/test_cc_set_hostname.py')
| -rw-r--r-- | tests/unittests/config/test_cc_set_hostname.py | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/tests/unittests/config/test_cc_set_hostname.py b/tests/unittests/config/test_cc_set_hostname.py new file mode 100644 index 00000000..b9a783a7 --- /dev/null +++ b/tests/unittests/config/test_cc_set_hostname.py @@ -0,0 +1,207 @@ +# This file is part of cloud-init. See LICENSE file for license information. + +from cloudinit.config import cc_set_hostname + +from cloudinit import cloud +from cloudinit import distros +from cloudinit import helpers +from cloudinit import util + +from tests.unittests import helpers as t_help + +from configobj import ConfigObj +import logging +import os +import shutil +import tempfile +from io import BytesIO +from unittest import mock + +LOG = logging.getLogger(__name__) + + +class TestHostname(t_help.FilesystemMockingTestCase): + + with_logs = True + + def setUp(self): + super(TestHostname, self).setUp() + self.tmp = tempfile.mkdtemp() + util.ensure_dir(os.path.join(self.tmp, 'data')) + self.addCleanup(shutil.rmtree, self.tmp) + + def _fetch_distro(self, kind, conf=None): + cls = distros.fetch(kind) + paths = helpers.Paths({'cloud_dir': self.tmp}) + conf = {} if conf is None else conf + return cls(kind, conf, paths) + + def test_debian_write_hostname_prefer_fqdn(self): + cfg = { + 'hostname': 'blah', + 'prefer_fqdn_over_hostname': True, + 'fqdn': 'blah.yahoo.com', + } + distro = self._fetch_distro('debian', cfg) + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + cc_set_hostname.handle('cc_set_hostname', + cfg, cc, LOG, []) + contents = util.load_file("/etc/hostname") + self.assertEqual('blah.yahoo.com', contents.strip()) + + @mock.patch('cloudinit.distros.Distro.uses_systemd', return_value=False) + def test_rhel_write_hostname_prefer_hostname(self, m_uses_systemd): + cfg = { + 'hostname': 'blah', + 'prefer_fqdn_over_hostname': False, + 'fqdn': 'blah.yahoo.com', + } + distro = self._fetch_distro('rhel', cfg) + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + cc_set_hostname.handle('cc_set_hostname', + cfg, cc, LOG, []) + contents = util.load_file("/etc/sysconfig/network", decode=False) + n_cfg = ConfigObj(BytesIO(contents)) + self.assertEqual( + {'HOSTNAME': 'blah'}, + dict(n_cfg)) + + @mock.patch('cloudinit.distros.Distro.uses_systemd', return_value=False) + def test_write_hostname_rhel(self, m_uses_systemd): + cfg = { + 'hostname': 'blah', + 'fqdn': 'blah.blah.blah.yahoo.com' + } + distro = self._fetch_distro('rhel') + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + cc_set_hostname.handle('cc_set_hostname', + cfg, cc, LOG, []) + contents = util.load_file("/etc/sysconfig/network", decode=False) + n_cfg = ConfigObj(BytesIO(contents)) + self.assertEqual( + {'HOSTNAME': 'blah.blah.blah.yahoo.com'}, + dict(n_cfg)) + + def test_write_hostname_debian(self): + cfg = { + 'hostname': 'blah', + 'fqdn': 'blah.blah.blah.yahoo.com', + } + distro = self._fetch_distro('debian') + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + cc_set_hostname.handle('cc_set_hostname', + cfg, cc, LOG, []) + contents = util.load_file("/etc/hostname") + self.assertEqual('blah', contents.strip()) + + @mock.patch('cloudinit.distros.Distro.uses_systemd', return_value=False) + def test_write_hostname_sles(self, m_uses_systemd): + cfg = { + 'hostname': 'blah.blah.blah.suse.com', + } + distro = self._fetch_distro('sles') + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + cc_set_hostname.handle('cc_set_hostname', cfg, cc, LOG, []) + contents = util.load_file(distro.hostname_conf_fn) + self.assertEqual('blah', contents.strip()) + + @mock.patch('cloudinit.distros.photon.subp.subp') + def test_photon_hostname(self, m_subp): + cfg1 = { + 'hostname': 'photon', + 'prefer_fqdn_over_hostname': True, + 'fqdn': 'test1.vmware.com', + } + cfg2 = { + 'hostname': 'photon', + 'prefer_fqdn_over_hostname': False, + 'fqdn': 'test2.vmware.com', + } + + ds = None + m_subp.return_value = (None, None) + distro = self._fetch_distro('photon', cfg1) + paths = helpers.Paths({'cloud_dir': self.tmp}) + cc = cloud.Cloud(ds, paths, {}, distro, None) + for c in [cfg1, cfg2]: + cc_set_hostname.handle('cc_set_hostname', c, cc, LOG, []) + print("\n", m_subp.call_args_list) + if c['prefer_fqdn_over_hostname']: + assert [ + mock.call(['hostnamectl', 'set-hostname', c['fqdn']], + capture=True) + ] in m_subp.call_args_list + assert [ + mock.call(['hostnamectl', 'set-hostname', c['hostname']], + capture=True) + ] not in m_subp.call_args_list + else: + assert [ + mock.call(['hostnamectl', 'set-hostname', c['hostname']], + capture=True) + ] in m_subp.call_args_list + assert [ + mock.call(['hostnamectl', 'set-hostname', c['fqdn']], + capture=True) + ] not in m_subp.call_args_list + + def test_multiple_calls_skips_unchanged_hostname(self): + """Only new hostname or fqdn values will generate a hostname call.""" + distro = self._fetch_distro('debian') + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + cc_set_hostname.handle( + 'cc_set_hostname', {'hostname': 'hostname1.me.com'}, cc, LOG, []) + contents = util.load_file("/etc/hostname") + self.assertEqual('hostname1', contents.strip()) + cc_set_hostname.handle( + 'cc_set_hostname', {'hostname': 'hostname1.me.com'}, cc, LOG, []) + self.assertIn( + 'DEBUG: No hostname changes. Skipping set-hostname\n', + self.logs.getvalue()) + cc_set_hostname.handle( + 'cc_set_hostname', {'hostname': 'hostname2.me.com'}, cc, LOG, []) + contents = util.load_file("/etc/hostname") + self.assertEqual('hostname2', contents.strip()) + self.assertIn( + 'Non-persistently setting the system hostname to hostname2', + self.logs.getvalue()) + + def test_error_on_distro_set_hostname_errors(self): + """Raise SetHostnameError on exceptions from distro.set_hostname.""" + distro = self._fetch_distro('debian') + + def set_hostname_error(hostname, fqdn): + raise Exception("OOPS on: %s" % fqdn) + + distro.set_hostname = set_hostname_error + paths = helpers.Paths({'cloud_dir': self.tmp}) + ds = None + cc = cloud.Cloud(ds, paths, {}, distro, None) + self.patchUtils(self.tmp) + with self.assertRaises(cc_set_hostname.SetHostnameError) as ctx_mgr: + cc_set_hostname.handle( + 'somename', {'hostname': 'hostname1.me.com'}, cc, LOG, []) + self.assertEqual( + 'Failed to set the hostname to hostname1.me.com (hostname1):' + ' OOPS on: hostname1.me.com', + str(ctx_mgr.exception)) + +# vi: ts=4 expandtab |