Add suse network config support

Signed-off-by: Mihaela Balutoiu <mbalutoiu@cloudbasesolutions.com>

Author: mihaelabalutoiu

coriolis/osmorphing/suse.py

@@ -11,8 +11,12 @@
 from coriolis import exception
 from coriolis.osmorphing import base
 from coriolis.osmorphing.osdetect import suse as suse_detect
+from coriolis.osmorphing import redhat as redhat_osmorphing
 from coriolis import utils
 
+IFCFG_TEMPLATE = redhat_osmorphing.IFCFG_TEMPLATE
+NMCONNECTION_TEMPLATE = redhat_osmorphing.NMCONNECTION_TEMPLATE
+
 LOG = logging.getLogger(__name__)
 
 DETECTED_SUSE_RELEASE_FIELD_NAME = suse_detect.DETECTED_SUSE_RELEASE_FIELD_NAME
@@ -29,6 +33,8 @@
 
 class BaseSUSEMorphingTools(base.BaseLinuxOSMorphingTools):
 
+    _NETWORK_SCRIPTS_PATH = "etc/sysconfig/network-scripts"
+    _NM_CONNECTIONS_PATH = "etc/NetworkManager/system-connections"
     BIOS_GRUB_LOCATION = "/boot/grub2"
     UEFI_GRUB_LOCATION = "/boot/efi/EFI/suse"
 
@@ -61,12 +67,107 @@ def check_os_supported(cls, detected_os_info):
         return False
 
     def disable_predictable_nic_names(self):
-        # TODO(gsamfira): implement once we have networking support
-        pass
+        grub_cfg = "etc/default/grub"
+        if not self._test_path(grub_cfg):
+            LOG.warning(
+                "Could not find /%s. Skipping predictable NIC names "
+                "disabling.", grub_cfg)
+            return
+        contents = self._read_file_sudo(grub_cfg)
+        cfg = utils.Grub2ConfigEditor(contents)
+        cfg.append_to_option(
+            "GRUB_CMDLINE_LINUX_DEFAULT",
+            {"opt_type": "key_val", "opt_key": "net.ifnames", "opt_val": 0})
+        cfg.append_to_option(
+            "GRUB_CMDLINE_LINUX_DEFAULT",
+            {"opt_type": "key_val", "opt_key": "biosdevname", "opt_val": 0})
+        cfg.append_to_option(
+            "GRUB_CMDLINE_LINUX",
+            {"opt_type": "key_val", "opt_key": "net.ifnames", "opt_val": 0})
+        cfg.append_to_option(
+            "GRUB_CMDLINE_LINUX",
+            {"opt_type": "key_val", "opt_key": "biosdevname", "opt_val": 0})
+        self._write_file_sudo("etc/default/grub", cfg.dump())
+        self._execute_update_grub()
+
+    def _get_ifcfg_nm_controlled(self):
+        if self._version_supported_util(self._version, minimum=15):
+            return "yes"
+        return "no"
+
+    def _get_ethernet_keyfiles(self):
+        if not self._test_path(self._NM_CONNECTIONS_PATH):
+            return []
+        return self._get_keyfiles_by_type(
+            "ethernet", self._NM_CONNECTIONS_PATH)
+
+    def _backup_nmconnection_files(self, backup_file_suffix=".bak"):
+        """Back up all existing nmconnection profiles."""
+        if not self._test_path(self._NM_CONNECTIONS_PATH):
+            return
+        for cfg_path in self._get_nmconnection_files(
+                self._NM_CONNECTIONS_PATH):
+            self._exec_cmd_chroot(
+                'mv "%s" "%s%s"' % (cfg_path, cfg_path, backup_file_suffix))
+            LOG.debug("Backed up nmconnection profile '%s'", cfg_path)
+
+    def _backup_ifcfg_configs(self, device_names, backup_file_suffix=".bak"):
+        """Back up ifcfg profiles for the given device names."""
+        for dev_name in device_names:
+            cfg_path = "%s/ifcfg-%s" % (self._NETWORK_SCRIPTS_PATH, dev_name)
+            if self._test_path(cfg_path):
+                self._exec_cmd_chroot(
+                    'mv "%s" "%s%s"' % (
+                        cfg_path, cfg_path, backup_file_suffix))
+                LOG.debug("Backed up ifcfg profile '%s'", cfg_path)
+
+    def _write_nic_configs(self, nics_info):
+        for idx, _ in enumerate(nics_info):
+            dev_name = "eth%d" % idx
+            cfg_path = "%s/ifcfg-%s" % (self._NETWORK_SCRIPTS_PATH, dev_name)
+            if self._test_path(cfg_path):
+                self._exec_cmd_chroot(
+                    "cp %s %s.bak" % (cfg_path, cfg_path)
+                )
+            self._write_file_sudo(
+                cfg_path,
+                IFCFG_TEMPLATE % {
+                    "device_name": dev_name,
+                    "nm_controlled": self._get_ifcfg_nm_controlled(),
+                })
+
+    def _write_nmconnection_configs(self, nics_info):
+        self._backup_nmconnection_files()
+        device_names = ["eth%d" % idx for idx, _ in enumerate(nics_info)]
+        self._backup_ifcfg_configs(device_names)
+
+        for idx, _ in enumerate(nics_info):
+            dev_name = "eth%d" % idx
+            cfg_path = "%s/%s.nmconnection" % (
+                self._NM_CONNECTIONS_PATH, dev_name)
+            self._write_file_sudo(
+                cfg_path,
+                NMCONNECTION_TEMPLATE % {
+                    "device_name": dev_name,
+                    "connection_uuid": str(uuid.uuid4()),
+                })
+            self._exec_cmd_chroot("chmod 600 /%s" % cfg_path)
+
+    def _write_dhcp_net_config(self, nics_info):
+        self.disable_predictable_nic_names()
+        ethernet_keyfiles = self._get_ethernet_keyfiles()
+        if ethernet_keyfiles:
+            self._write_nmconnection_configs(nics_info)
+        else:
+            self._write_nic_configs(nics_info)
 
     def set_net_config(self, nics_info, dhcp):
-        # TODO(alexpilotti): add networking support
-        pass
+        if dhcp:
+            self._write_dhcp_net_config(nics_info)
+            return
+
+        LOG.info("Setting static IP configuration")
+        self._setup_network_preservation(nics_info)
 
     def get_installed_packages(self):
         cmd = 'rpm -qa --qf "%{NAME}\\n"'

coriolis/tests/osmorphing/test_suse.py

@@ -434,3 +434,245 @@ def test_pre_packages_install_no_packages(
         mock_super_pre.assert_called_once_with([])
         mock_enable_sles_module.assert_not_called()
         mock_add_cloud_tools_repo.assert_not_called()
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_get_keyfiles_by_type')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__get_ethernet_keyfiles(
+            self, mock_test_path, mock_get_keyfiles_by_type):
+        mock_test_path.return_value = True
+        keyfiles = [
+            ('etc/NetworkManager/system-connections/eth0.nmconnection', {}),
+            ('etc/NetworkManager/system-connections/eth1.nmconnection', {})]
+        mock_get_keyfiles_by_type.return_value = keyfiles
+
+        result = self.morphing_tools._get_ethernet_keyfiles()
+
+        self.assertEqual(result, keyfiles)
+        mock_get_keyfiles_by_type.assert_called_once_with(
+            "ethernet", "etc/NetworkManager/system-connections")
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_get_keyfiles_by_type')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__get_ethernet_keyfiles_no_path(
+            self, mock_test_path, mock_get_keyfiles_by_type):
+        mock_test_path.return_value = False
+
+        result = self.morphing_tools._get_ethernet_keyfiles()
+
+        self.assertEqual(result, [])
+        mock_get_keyfiles_by_type.assert_not_called()
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_exec_cmd_chroot')
+    @mock.patch.object(
+        base.BaseLinuxOSMorphingTools, '_get_nmconnection_files')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__backup_nmconnection_files(
+            self, mock_test_path, mock_get_nmconnection_files,
+            mock_exec_cmd_chroot):
+        mock_test_path.return_value = True
+        # All nmconnection profiles must be backed up, not only ethernet ones.
+        mock_get_nmconnection_files.return_value = [
+            'etc/NetworkManager/system-connections/eth0.nmconnection',
+            'etc/NetworkManager/system-connections/wifi.nmconnection']
+
+        with self.assertLogs('coriolis.osmorphing.suse', level=logging.DEBUG):
+            self.morphing_tools._backup_nmconnection_files()
+
+        mock_get_nmconnection_files.assert_called_once_with(
+            "etc/NetworkManager/system-connections")
+        mock_exec_cmd_chroot.assert_has_calls([
+            mock.call(
+                'mv "etc/NetworkManager/system-connections/eth0.nmconnection" '
+                '"etc/NetworkManager/system-connections/'
+                'eth0.nmconnection.bak"'),
+            mock.call(
+                'mv "etc/NetworkManager/system-connections/wifi.nmconnection" '
+                '"etc/NetworkManager/system-connections/'
+                'wifi.nmconnection.bak"'),
+        ])
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_exec_cmd_chroot')
+    @mock.patch.object(
+        base.BaseLinuxOSMorphingTools, '_get_nmconnection_files')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__backup_nmconnection_files_no_path(
+            self, mock_test_path, mock_get_nmconnection_files,
+            mock_exec_cmd_chroot):
+        mock_test_path.return_value = False
+
+        self.morphing_tools._backup_nmconnection_files()
+
+        mock_get_nmconnection_files.assert_not_called()
+        mock_exec_cmd_chroot.assert_not_called()
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_exec_cmd_chroot')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__backup_ifcfg_configs(
+            self, mock_test_path, mock_exec_cmd_chroot):
+        # Only the targeted devices that actually exist are backed up.
+        mock_test_path.side_effect = [True, False]
+
+        with self.assertLogs('coriolis.osmorphing.suse', level=logging.DEBUG):
+            self.morphing_tools._backup_ifcfg_configs(['eth0', 'eth1'])
+
+        mock_test_path.assert_has_calls([
+            mock.call("etc/sysconfig/network-scripts/ifcfg-eth0"),
+            mock.call("etc/sysconfig/network-scripts/ifcfg-eth1"),
+        ])
+        mock_exec_cmd_chroot.assert_called_once_with(
+            'mv "etc/sysconfig/network-scripts/ifcfg-eth0" '
+            '"etc/sysconfig/network-scripts/ifcfg-eth0.bak"')
+
+    def test__get_ifcfg_nm_controlled_old_version(self):
+        result = self.morphing_tools._get_ifcfg_nm_controlled()
+
+        self.assertEqual("no", result)
+
+    def test__get_ifcfg_nm_controlled_sles15(self):
+        self.morphing_tools._version = "15"
+
+        result = self.morphing_tools._get_ifcfg_nm_controlled()
+
+        self.assertEqual("yes", result)
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_write_file_sudo')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_exec_cmd_chroot')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__write_nic_configs_with_existing_file(
+            self, mock_test_path, mock_exec_cmd_chroot, mock_write_file_sudo):
+        nics_info = [{'name': 'eth0'}, {'name': 'eth1'}]
+        mock_test_path.return_value = True
+
+        self.morphing_tools._write_nic_configs(nics_info)
+
+        mock_exec_cmd_chroot.assert_has_calls([
+            mock.call("cp etc/sysconfig/network-scripts/ifcfg-eth0 "
+                      "etc/sysconfig/network-scripts/ifcfg-eth0.bak"),
+            mock.call("cp etc/sysconfig/network-scripts/ifcfg-eth1 "
+                      "etc/sysconfig/network-scripts/ifcfg-eth1.bak"),
+        ])
+        mock_write_file_sudo.assert_has_calls([
+            mock.call(
+                "etc/sysconfig/network-scripts/ifcfg-eth0",
+                suse.IFCFG_TEMPLATE % {
+                    "device_name": "eth0",
+                    "nm_controlled": "no",
+                },
+            ),
+            mock.call(
+                "etc/sysconfig/network-scripts/ifcfg-eth1",
+                suse.IFCFG_TEMPLATE % {
+                    "device_name": "eth1",
+                    "nm_controlled": "no",
+                },
+            ),
+        ])
+
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_write_file_sudo')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_exec_cmd_chroot')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_test_path')
+    def test__write_nic_configs_sles15_no_existing_file(
+            self, mock_test_path, mock_exec_cmd_chroot, mock_write_file_sudo):
+        self.morphing_tools._version = "15"
+        nics_info = [{'name': 'eth0'}]
+        mock_test_path.return_value = False
+
+        self.morphing_tools._write_nic_configs(nics_info)
+
+        mock_exec_cmd_chroot.assert_not_called()
+        mock_write_file_sudo.assert_called_once_with(
+            "etc/sysconfig/network-scripts/ifcfg-eth0",
+            suse.IFCFG_TEMPLATE % {
+                "device_name": "eth0",
+                "nm_controlled": "yes",
+            },
+        )
+
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, '_backup_ifcfg_configs')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, '_backup_nmconnection_files')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_write_file_sudo')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, '_exec_cmd_chroot')
+    def test__write_nmconnection_configs(
+            self, mock_exec_cmd_chroot, mock_write_file_sudo,
+            mock_backup_nmconnection_files,
+            mock_backup_ifcfg_configs):
+        nics_info = [{'name': 'eth0'}]
+
+        self.morphing_tools._write_nmconnection_configs(nics_info)
+
+        mock_backup_nmconnection_files.assert_called_once_with()
+        mock_backup_ifcfg_configs.assert_called_once_with(['eth0'])
+        mock_write_file_sudo.assert_called_once()
+        args, _ = mock_write_file_sudo.call_args
+        self.assertEqual(
+            args[0],
+            "etc/NetworkManager/system-connections/eth0.nmconnection")
+        self.assertIn("[connection]", args[1])
+        self.assertIn("interface-name=eth0", args[1])
+        self.assertIn("method=auto", args[1])
+        self.assertIn("may-fail=false", args[1])
+        mock_exec_cmd_chroot.assert_called_once_with(
+            "chmod 600 /etc/NetworkManager/system-connections/"
+            "eth0.nmconnection")
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_write_nic_configs')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, '_write_nmconnection_configs')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, '_get_ethernet_keyfiles')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, 'disable_predictable_nic_names')
+    def test__write_dhcp_net_config_no_ethernet_keyfiles(
+            self, mock_disable_predictable_nic_names,
+            mock_get_ethernet_keyfiles,
+            mock_write_nmconnection_configs, mock_write_nic_configs):
+        mock_get_ethernet_keyfiles.return_value = []
+        nics_info = [{'name': 'eth0'}]
+
+        self.morphing_tools._write_dhcp_net_config(nics_info)
+
+        mock_disable_predictable_nic_names.assert_called_once()
+        mock_get_ethernet_keyfiles.assert_called_once_with()
+        mock_write_nic_configs.assert_called_once_with(nics_info)
+        mock_write_nmconnection_configs.assert_not_called()
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_write_nic_configs')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, '_write_nmconnection_configs')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, '_get_ethernet_keyfiles')
+    @mock.patch.object(
+        suse.BaseSUSEMorphingTools, 'disable_predictable_nic_names')
+    def test__write_dhcp_net_config_with_ethernet_keyfiles(
+            self, mock_disable_predictable_nic_names,
+            mock_get_ethernet_keyfiles,
+            mock_write_nmconnection_configs, mock_write_nic_configs):
+        mock_get_ethernet_keyfiles.return_value = [
+            ('etc/NetworkManager/system-connections/eth0.nmconnection', {})]
+        nics_info = [{'name': 'eth0'}]
+
+        self.morphing_tools._write_dhcp_net_config(nics_info)
+
+        mock_disable_predictable_nic_names.assert_called_once()
+        mock_get_ethernet_keyfiles.assert_called_once_with()
+        mock_write_nmconnection_configs.assert_called_once_with(nics_info)
+        mock_write_nic_configs.assert_not_called()
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_write_dhcp_net_config')
+    def test_set_net_config_dhcp(self, mock_write_dhcp_net_config):
+        nics_info = [{'name': 'eth0'}]
+
+        self.morphing_tools.set_net_config(nics_info, dhcp=True)
+
+        mock_write_dhcp_net_config.assert_called_once_with(nics_info)
+
+    @mock.patch.object(
+        base.BaseLinuxOSMorphingTools, '_setup_network_preservation')
+    def test_set_net_config_static(self, mock_setup_network_preservation):
+        nics_info = [{'name': 'eth0'}]
+
+        self.morphing_tools.set_net_config(nics_info, dhcp=False)
+
+        mock_setup_network_preservation.assert_called_once_with(nics_info)