diff options
Diffstat (limited to 'cloudinit/config')
| -rw-r--r-- | cloudinit/config/cc_disable_ec2_metadata.py | 14 | ||||
| -rw-r--r-- | cloudinit/config/tests/test_disable_ec2_metadata.py | 50 |
2 files changed, 62 insertions, 2 deletions
diff --git a/cloudinit/config/cc_disable_ec2_metadata.py b/cloudinit/config/cc_disable_ec2_metadata.py index c56319b5..885b3138 100644 --- a/cloudinit/config/cc_disable_ec2_metadata.py +++ b/cloudinit/config/cc_disable_ec2_metadata.py @@ -32,13 +32,23 @@ from cloudinit.settings import PER_ALWAYS frequency = PER_ALWAYS -REJECT_CMD = ['route', 'add', '-host', '169.254.169.254', 'reject'] +REJECT_CMD_IF = ['route', 'add', '-host', '169.254.169.254', 'reject'] +REJECT_CMD_IP = ['ip', 'route', 'add', 'prohibit', '169.254.169.254'] def handle(name, cfg, _cloud, log, _args): disabled = util.get_cfg_option_bool(cfg, "disable_ec2_metadata", False) if disabled: - util.subp(REJECT_CMD, capture=False) + reject_cmd = None + if util.which('ip'): + reject_cmd = REJECT_CMD_IP + elif util.which('ifconfig'): + reject_cmd = REJECT_CMD_IF + else: + log.error(('Neither "route" nor "ip" command found, unable to ' + 'manipulate routing table')) + return + util.subp(reject_cmd, capture=False) else: log.debug(("Skipping module named %s," " disabling the ec2 route not enabled"), name) diff --git a/cloudinit/config/tests/test_disable_ec2_metadata.py b/cloudinit/config/tests/test_disable_ec2_metadata.py new file mode 100644 index 00000000..67646b03 --- /dev/null +++ b/cloudinit/config/tests/test_disable_ec2_metadata.py @@ -0,0 +1,50 @@ +# This file is part of cloud-init. See LICENSE file for license information. + +"""Tests cc_disable_ec2_metadata handler""" + +import cloudinit.config.cc_disable_ec2_metadata as ec2_meta + +from cloudinit.tests.helpers import CiTestCase, mock + +import logging + +LOG = logging.getLogger(__name__) + +DISABLE_CFG = {'disable_ec2_metadata': 'true'} + + +class TestEC2MetadataRoute(CiTestCase): + + with_logs = True + + @mock.patch('cloudinit.config.cc_disable_ec2_metadata.util.which') + @mock.patch('cloudinit.config.cc_disable_ec2_metadata.util.subp') + def test_disable_ifconfig(self, m_subp, m_which): + """Set the route if ifconfig command is available""" + m_which.side_effect = lambda x: x if x == 'ifconfig' else None + ec2_meta.handle('foo', DISABLE_CFG, None, LOG, None) + m_subp.assert_called_with( + ['route', 'add', '-host', '169.254.169.254', 'reject'], + capture=False) + + @mock.patch('cloudinit.config.cc_disable_ec2_metadata.util.which') + @mock.patch('cloudinit.config.cc_disable_ec2_metadata.util.subp') + def test_disable_ip(self, m_subp, m_which): + """Set the route if ip command is available""" + m_which.side_effect = lambda x: x if x == 'ip' else None + ec2_meta.handle('foo', DISABLE_CFG, None, LOG, None) + m_subp.assert_called_with( + ['ip', 'route', 'add', 'prohibit', '169.254.169.254'], + capture=False) + + @mock.patch('cloudinit.config.cc_disable_ec2_metadata.util.which') + @mock.patch('cloudinit.config.cc_disable_ec2_metadata.util.subp') + def test_disable_no_tool(self, m_subp, m_which): + """Log error when neither route nor ip commands are available""" + m_which.return_value = None # Find neither ifconfig nor ip + ec2_meta.handle('foo', DISABLE_CFG, None, LOG, None) + self.assertEqual( + [mock.call('ip'), mock.call('ifconfig')], m_which.call_args_list) + m_subp.assert_not_called() + +# vi: ts=4 expandtab |