From d788652276344c8dbe5a97d629f19a66c9de97f4 Mon Sep 17 00:00:00 2001 From: Dan Prince Date: Wed, 23 Sep 2015 15:59:44 -0400 Subject: ifcfg: Add support for dns_servers Adds in the ability to optionally configure DNS server settings via the ifcfg file formats. The dns_servers JSON is an array which currently supports either 1 or 2 DNS servers (per limitations of the ifcfg format). Change-Id: I9edecfdd4e1d0f39883b72be554cd92c5685881d --- os_net_config/impl_ifcfg.py | 6 ++++++ os_net_config/objects.py | 39 +++++++++++++++++++++------------- os_net_config/tests/test_impl_ifcfg.py | 28 ++++++++++++++++++++++++ os_net_config/tests/test_objects.py | 11 ++++++++++ 4 files changed, 69 insertions(+), 15 deletions(-) diff --git a/os_net_config/impl_ifcfg.py b/os_net_config/impl_ifcfg.py index 99273bc..06cf389 100644 --- a/os_net_config/impl_ifcfg.py +++ b/os_net_config/impl_ifcfg.py @@ -157,6 +157,12 @@ class IfcfgNetConfig(os_net_config.NetConfig): data += "DEFROUTE=no\n" if base_opt.dhclient_args: data += "DHCLIENTARGS=%s\n" % base_opt.dhclient_args + if base_opt.dns_servers: + data += "DNS1=%s\n" % base_opt.dns_servers[0] + if len(base_opt.dns_servers) == 2: + data += "DNS2=%s\n" % base_opt.dns_servers[1] + elif len(base_opt.dns_servers) > 2: + logger.warning('ifcfg format supports a max of 2 dns servers.') return data def _add_routes(self, interface_name, routes=[]): diff --git a/os_net_config/objects.py b/os_net_config/objects.py index 8899164..388ea7c 100644 --- a/os_net_config/objects.py +++ b/os_net_config/objects.py @@ -130,7 +130,8 @@ class _BaseOpts(object): def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[], routes=[], mtu=1500, primary=False, nic_mapping=None, - persist_mapping=False, defroute=True, dhclient_args=None): + persist_mapping=False, defroute=True, dhclient_args=None, + dns_servers=[]): numbered_nic_names = _numbered_nics(nic_mapping) self.hwaddr = None self.hwname = None @@ -154,6 +155,7 @@ class _BaseOpts(object): self.primary = primary self.defroute = defroute self.dhclient_args = dhclient_args + self.dns_servers = dns_servers self.bridge_name = None # internal self.ovs_port = False # internal self.primary_interface_name = None # internal @@ -183,6 +185,7 @@ class _BaseOpts(object): True))) mtu = json.get('mtu', 1500) dhclient_args = json.get('dhclient_args') + dns_servers = json.get('dns_servers') primary = strutils.bool_from_string(str(json.get('primary', False))) addresses = [] routes = [] @@ -212,10 +215,12 @@ class _BaseOpts(object): if include_primary: return (use_dhcp, use_dhcpv6, addresses, routes, mtu, primary, - nic_mapping, persist_mapping, defroute, dhclient_args) + nic_mapping, persist_mapping, defroute, dhclient_args, + dns_servers) else: return (use_dhcp, use_dhcpv6, addresses, routes, mtu, - nic_mapping, persist_mapping, defroute, dhclient_args) + nic_mapping, persist_mapping, defroute, dhclient_args, + dns_servers) class Interface(_BaseOpts): @@ -223,11 +228,12 @@ class Interface(_BaseOpts): def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[], routes=[], mtu=1500, primary=False, nic_mapping=None, - persist_mapping=False, defroute=True, dhclient_args=None): + persist_mapping=False, defroute=True, dhclient_args=None, + dns_servers=[]): super(Interface, self).__init__(name, use_dhcp, use_dhcpv6, addresses, routes, mtu, primary, nic_mapping, persist_mapping, defroute, - dhclient_args) + dhclient_args, dns_servers) @staticmethod def from_json(json): @@ -246,11 +252,12 @@ class Vlan(_BaseOpts): def __init__(self, device, vlan_id, use_dhcp=False, use_dhcpv6=False, addresses=[], routes=[], mtu=1500, primary=False, nic_mapping=None, persist_mapping=False, defroute=True, - dhclient_args=None): + dhclient_args=None, dns_servers=[]): name = 'vlan%i' % vlan_id super(Vlan, self).__init__(name, use_dhcp, use_dhcpv6, addresses, routes, mtu, primary, nic_mapping, - persist_mapping, defroute, dhclient_args) + persist_mapping, defroute, dhclient_args, + dns_servers) self.vlan_id = int(vlan_id) numbered_nic_names = _numbered_nics(nic_mapping) @@ -274,11 +281,11 @@ class OvsBridge(_BaseOpts): def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[], routes=[], mtu=1500, members=[], ovs_options=None, ovs_extra=[], nic_mapping=None, persist_mapping=False, - defroute=True, dhclient_args=None): + defroute=True, dhclient_args=None, dns_servers=[]): super(OvsBridge, self).__init__(name, use_dhcp, use_dhcpv6, addresses, routes, mtu, False, nic_mapping, persist_mapping, defroute, - dhclient_args) + dhclient_args, dns_servers) self.members = members self.ovs_options = ovs_options self.ovs_extra = ovs_extra @@ -299,7 +306,7 @@ class OvsBridge(_BaseOpts): name = _get_required_field(json, 'name', 'OvsBridge') (use_dhcp, use_dhcpv6, addresses, routes, mtu, nic_mapping, persist_mapping, defroute, - dhclient_args) = _BaseOpts.base_opts_from_json( + dhclient_args, dns_servers) = _BaseOpts.base_opts_from_json( json, include_primary=False) ovs_options = json.get('ovs_options') ovs_extra = json.get('ovs_extra', []) @@ -320,7 +327,7 @@ class OvsBridge(_BaseOpts): members=members, ovs_options=ovs_options, ovs_extra=ovs_extra, nic_mapping=nic_mapping, persist_mapping=persist_mapping, defroute=defroute, - dhclient_args=dhclient_args) + dhclient_args=dhclient_args, dns_servers=dns_servers) class OvsBond(_BaseOpts): @@ -329,10 +336,12 @@ class OvsBond(_BaseOpts): def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[], routes=[], mtu=1500, primary=False, members=[], ovs_options=None, ovs_extra=[], nic_mapping=None, - persist_mapping=False, defroute=True, dhclient_args=None): + persist_mapping=False, defroute=True, dhclient_args=None, + dns_servers=[]): super(OvsBond, self).__init__(name, use_dhcp, use_dhcpv6, addresses, routes, mtu, primary, nic_mapping, - persist_mapping, defroute, dhclient_args) + persist_mapping, defroute, dhclient_args, + dns_servers) self.members = members self.ovs_options = ovs_options self.ovs_extra = ovs_extra @@ -355,7 +364,7 @@ class OvsBond(_BaseOpts): name = _get_required_field(json, 'name', 'OvsBond') (use_dhcp, use_dhcpv6, addresses, routes, mtu, nic_mapping, persist_mapping, defroute, - dhclient_args) = _BaseOpts.base_opts_from_json( + dhclient_args, dns_servers) = _BaseOpts.base_opts_from_json( json, include_primary=False) ovs_options = json.get('ovs_options') ovs_extra = json.get('ovs_extra', []) @@ -376,4 +385,4 @@ class OvsBond(_BaseOpts): members=members, ovs_options=ovs_options, ovs_extra=ovs_extra, nic_mapping=nic_mapping, persist_mapping=persist_mapping, defroute=defroute, - dhclient_args=dhclient_args) + dhclient_args=dhclient_args, dns_servers=dns_servers) diff --git a/os_net_config/tests/test_impl_ifcfg.py b/os_net_config/tests/test_impl_ifcfg.py index e32aff2..ec2a36c 100644 --- a/os_net_config/tests/test_impl_ifcfg.py +++ b/os_net_config/tests/test_impl_ifcfg.py @@ -328,6 +328,34 @@ HOTPLUG=no NM_CONTROLLED=no BOOTPROTO=none DHCLIENTARGS=--foobar +""" + self.assertEqual(em1_config, self.get_interface_config('em1')) + + def test_interface_single_dns_server(self): + interface1 = objects.Interface('em1', dns_servers=['1.2.3.4']) + self.provider.add_interface(interface1) + em1_config = """# This file is autogenerated by os-net-config +DEVICE=em1 +ONBOOT=yes +HOTPLUG=no +NM_CONTROLLED=no +BOOTPROTO=none +DNS1=1.2.3.4 +""" + self.assertEqual(em1_config, self.get_interface_config('em1')) + + def test_interface_dns_servers(self): + interface1 = objects.Interface('em1', dns_servers=['1.2.3.4', + '5.6.7.8']) + self.provider.add_interface(interface1) + em1_config = """# This file is autogenerated by os-net-config +DEVICE=em1 +ONBOOT=yes +HOTPLUG=no +NM_CONTROLLED=no +BOOTPROTO=none +DNS1=1.2.3.4 +DNS2=5.6.7.8 """ self.assertEqual(em1_config, self.get_interface_config('em1')) diff --git a/os_net_config/tests/test_objects.py b/os_net_config/tests/test_objects.py index c824ba8..8488370 100644 --- a/os_net_config/tests/test_objects.py +++ b/os_net_config/tests/test_objects.py @@ -119,6 +119,17 @@ class TestInterface(base.TestCase): interface1 = objects.object_from_json(json.loads(data)) self.assertEqual("--foobar", interface1.dhclient_args) + def test_from_json_dns_servers(self): + data = """{ +"type": "interface", +"name": "em1", +"use_dhcp": true, +"dns_servers": ["1.2.3.4"] +} +""" + interface1 = objects.object_from_json(json.loads(data)) + self.assertEqual(["1.2.3.4"], interface1.dns_servers) + def test_from_json_dhcp_nic1(self): def dummy_numbered_nics(nic_mapping=None): return {"nic1": "em3"} -- cgit 1.2.3-korg