Change debian set_net_config

coriolis/osmorphing/base.py

@@ -46,10 +46,6 @@ class BaseOSMorphingTools(object, with_metaclass(abc.ABCMeta)):
     def set_net_config(self, nics_info, dhcp):
         pass
 
-    @abc.abstractmethod
-    def disable_predictable_nic_names(self):
-        pass
-
     def get_packages(self):
         return [], []
 

coriolis/osmorphing/coreos.py

@@ -13,6 +13,9 @@ class BaseCoreOSMorphingTools(base.BaseLinuxOSMorphingTools):
             version = os_release.get("VERSION_ID")
             return (name, version)
 
+    def disable_predictable_nic_names(self):
+        pass
+
     def pre_packages_install(self, package_names):
         pass
 

coriolis/osmorphing/debian.py

@@ -2,10 +2,22 @@
 # All Rights Reserved.
 
 import os
+import yaml
+
+from io import StringIO
 
 from coriolis import utils
 from coriolis.osmorphing import base
 
+LO_NIC_TPL = """
+auto lo
+iface lo inet loopback
+"""
+
+INTERFACES_NIC_TPL = """
+auto %(device_name)s
+iface %(device_name)s inet dhcp
+"""
 
 class BaseDebianMorphingTools(base.BaseLinuxOSMorphingTools):
     def _check_os(self):
@@ -45,13 +57,67 @@ class BaseDebianMorphingTools(base.BaseLinuxOSMorphingTools):
         self._write_file_sudo(grub_cfg, cfg.dump())
         self._exec_cmd_chroot("/usr/sbin/update-grub")
 
+    def _compose_interfaces_config(self, nics_info):
+        fp = StringIO()
+        fp.write(LO_NIC_TPL)
+        fp.write("\n\n")
+        for idx,_ in enumerate(nics_info):
+            dev_name = "eth%d" % idx
+            cfg = INTERFACES_NIC_TPL % {
+                "device_name": dev_name,
+            }
+            fp.write(cfg)
+            fp.write("\n\n")
+        fp.seek(0)
+        return fp.read()
+
+    def _compose_netplan_cfg(self, nics_info):
+        cfg = {
+            "network":{
+                "version": 2,
+                "ethernets": {
+                    "lo": {
+                        "match": {
+                            "name": "lo"
+                        },
+                        "addresses": ["127.0.0.1/8"]
+                    }
+                }
+            }
+        }
+        for idx,_ in enumerate(nics_info):
+            cfg["network"]["ethernets"]["eth%d" % idx] = {
+                "dhcp4": True,
+                "dhcp6": True,
+            }
+        return yaml.dump(cfg, default_flow_style=False)
+
     def set_net_config(self, nics_info, dhcp):
-        if dhcp:
-            # NOTE: doesn't work with chroot
-            interfaces_path = os.path.join(
-                self._os_root_dir, "etc/network/interfaces")
-            self._exec_cmd('sudo sed -i.bak "s/static/dhcp/g" %s' %
-                           interfaces_path)
+        if not dhcp:
+            return
+
+        self.disable_predictable_nic_names()
+        # NOTE: doesn't work with chroot
+        if self._test_path("etc/network"):
+            ifaces_file = "etc/network/interfaces"
+            contents = self._compose_interfaces_config(nics_info)
+            if self._test_path(ifaces_file):
+                self._exec_cmd_chroot(
+                    "cp %s %s.bak" % (ifaces_file, ifaces_file))
+            self._write_file_sudo(ifaces_file, contents)
+
+        netplan_base = "etc/netplan"
+        if self._test_path(netplan_base):
+            curr_files = self._list_dir(netplan_base)
+            for cnf in curr_files:
+                if cnf.endswith(".yaml") or cnf.endswith(".yml"):
+                    pth = "%s/%s" % (netplan_base, cnf)
+                    self._exec_cmd_chroot(
+                        "cp %s %s.bak" % (pth, pth)
+                    )
+            new_cfg = self._compose_netplan_cfg(nics_info)
+            cfg_name = "%s/coriolis_netplan.yaml" % netplan_base
+            self._write_file_sudo(cfg_name, new_cfg)
 
     def pre_packages_install(self, package_names):
         super(BaseDebianMorphingTools, self).pre_packages_install(

coriolis/osmorphing/openwrt.py

@@ -14,6 +14,9 @@ class BaseOpenWRTMorphingTools(base.BaseLinuxOSMorphingTools):
             version = openwrt_release.get("DISTRIB_RELEASE")
             return (name, version)
 
+    def disable_predictable_nic_names(self):
+        pass
+
     def pre_packages_install(self, package_names):
         pass
 

coriolis/osmorphing/suse.py

@@ -36,6 +36,10 @@ class BaseSUSEMorphingTools(base.BaseLinuxOSMorphingTools):
             self._version_id = version_id
             return ('SUSE', release)
 
+    def disable_predictable_nic_names(self):
+        # TODO(gsamfira): implement once we have networking support
+        pass
+
     def set_net_config(self, nics_info, dhcp):
         # TODO(alexpilotti): add networking support
         pass