import logging import os import re from itertools import chain import netifaces from netaddr import IPAddress from netbox_agent.config import config from netbox_agent.config import netbox_instance as nb from netbox_agent.ethtool import Ethtool from netbox_agent.ipmi import IPMI from netbox_agent.lldp import LLDP class Network(object): def __init__(self, server, *args, **kwargs): self.nics = [] self.server = server self.tenant = self.server.get_netbox_tenant() self.lldp = LLDP() if config.network.lldp else None self.nics = self.scan() self.ipmi = None self.dcim_choices = {} dcim_c = nb.dcim.interfaces.choices() for _choice_type in dcim_c: key = 'interface:{}'.format(_choice_type) self.dcim_choices[key] = {} for choice in dcim_c[_choice_type]: self.dcim_choices[key][choice['display_name']] = choice['value'] self.ipam_choices = {} ipam_c = nb.ipam.ip_addresses.choices() for _choice_type in ipam_c: key = 'ip-address:{}'.format(_choice_type) self.ipam_choices[key] = {} for choice in ipam_c[_choice_type]: self.ipam_choices[key][choice['display_name']] = choice['value'] def get_network_type(): return NotImplementedError def scan(self): nics = [] for interface in os.listdir('/sys/class/net/'): # ignore if it's not a link (ie: bonding_masters etc) if not os.path.islink('/sys/class/net/{}'.format(interface)): continue if config.network.ignore_interfaces and \ re.match(config.network.ignore_interfaces, interface): logging.debug('Ignore interface {interface}'.format(interface=interface)) continue ip_addr = netifaces.ifaddresses(interface).get(netifaces.AF_INET, []) ip6_addr = netifaces.ifaddresses(interface).get(netifaces.AF_INET6, []) # netifaces returns a ipv6 netmask that netaddr does not understand. # this strips the netmask down to the correct format for netaddr, # and remove the interface. # ie, this: # { # 'addr': 'fe80::ec4:7aff:fe59:ec4a%eno1.50', # 'netmask': 'ffff:ffff:ffff:ffff::/64' # } # # becomes: # { # 'addr': 'fe80::ec4:7aff:fe59:ec4a', # 'netmask': 'ffff:ffff:ffff:ffff::' # } # for addr in ip6_addr: addr["addr"] = addr["addr"].replace('%{}'.format(interface), '') addr["netmask"] = addr["netmask"].split('/')[0] ip_addr.append(addr) if config.network.ignore_ips and ip_addr: for i, ip in enumerate(ip_addr): if re.match(config.network.ignore_ips, ip['addr']): ip_addr.pop(i) mac = open('/sys/class/net/{}/address'.format(interface), 'r').read().strip() vlan = None if len(interface.split('.')) > 1: vlan = int(interface.split('.')[1]) bonding = False bonding_slaves = [] if os.path.isdir('/sys/class/net/{}/bonding'.format(interface)): bonding = True bonding_slaves = open( '/sys/class/net/{}/bonding/slaves'.format(interface) ).read().split() # Tun and TAP support virtual = os.path.isfile( '/sys/class/net/{}/tun_flags'.format(interface) ) nic = { 'name': interface, 'mac': mac if mac != '00:00:00:00:00:00' else None, 'ip': [ '{}/{}'.format( x['addr'], IPAddress(x['netmask']).netmask_bits() ) for x in ip_addr ] if ip_addr else None, # FIXME: handle IPv6 addresses 'ethtool': Ethtool(interface).parse(), 'virtual': virtual, 'vlan': vlan, 'bonding': bonding, 'bonding_slaves': bonding_slaves, } nics.append(nic) return nics def _set_bonding_interfaces(self): bonding_nics = (x for x in self.nics if x['bonding']) for nic in bonding_nics: bond_int = self.get_netbox_network_card(nic) logging.debug('Setting slave interface for {name}'.format( name=bond_int.name )) for slave_int in ( self.get_netbox_network_card(slave_nic) for slave_nic in self.nics if slave_nic['name'] in nic['bonding_slaves']): if slave_int.lag is None or slave_int.lag.id != bond_int.id: logging.debug('Settting interface {name} as slave of {master}'.format( name=slave_int.name, master=bond_int.name )) slave_int.lag = bond_int slave_int.save() else: return False return True def get_network_cards(self): return self.nics def get_netbox_network_card(self, nic): if nic['mac'] is None: interface = self.nb_net.interfaces.get( name=nic['name'], **self.custom_arg_id, ) else: interface = self.nb_net.interfaces.get( mac_address=nic['mac'], name=nic['name'], **self.custom_arg_id, ) return interface def get_netbox_network_cards(self): return self.nb_net.interfaces.filter( **self.custom_arg_id, ) def get_netbox_type_for_nic(self, nic): if self.get_network_type() == 'virtual': return self.dcim_choices['interface:type']['Virtual'] if nic.get('bonding'): return self.dcim_choices['interface:type']['Link Aggregation Group (LAG)'] if nic.get('bonding'): return self.dcim_choices['interface:type']['Link Aggregation Group (LAG)'] if nic.get('virtual'): return self.dcim_choices['interface:type']['Virtual'] if nic.get('ethtool') is None: return self.dcim_choices['interface:type']['Other'] if nic['ethtool']['speed'] == '10000Mb/s': if nic['ethtool']['port'] in ('FIBRE', 'Direct Attach Copper'): return self.dcim_choices['interface:type']['SFP+ (10GE)'] return self.dcim_choices['interface:type']['10GBASE-T (10GE)'] elif nic['ethtool']['speed'] == '25000Mb/s': if nic['ethtool']['port'] in ('FIBRE', 'Direct Attach Copper'): return self.dcim_choices['interface:type']['SFP28 (25GE)'] elif nic['ethtool']['speed'] == '1000Mb/s': if nic['ethtool']['port'] in ('FIBRE', 'Direct Attach Copper'): return self.dcim_choices['interface:type']['SFP (1GE)'] return self.dcim_choices['interface:type']['1000BASE-T (1GE)'] return self.dcim_choices['interface:type']['Other'] def get_or_create_vlan(self, vlan_id): # FIXME: we may need to specify the datacenter # since users may have same vlan id in multiple dc vlan = nb.ipam.vlans.get( vid=vlan_id, ) if vlan is None: vlan = nb.ipam.vlans.create( name='VLAN {}'.format(vlan_id), vid=vlan_id, ) return vlan def reset_vlan_on_interface(self, nic, interface): update = False vlan_id = nic['vlan'] lldp_vlan = self.lldp.get_switch_vlan(nic['name']) if config.network.lldp else None # if local interface isn't a interface vlan or lldp doesn't report a vlan-id if vlan_id is None and lldp_vlan is None and \ (interface.mode is not None or len(interface.tagged_vlans) > 0): logging.info('Interface {interface} is not tagged, reseting mode'.format( interface=interface)) update = True interface.mode = None interface.tagged_vlans = [] interface.untagged_vlan = None # if it's a vlan interface elif vlan_id and ( interface.mode is None or type(interface.mode) is not int and ( interface.mode.value == self.dcim_choices['interface:mode']['Access'] or len(interface.tagged_vlans) != 1 or interface.tagged_vlans[0].vid != vlan_id)): logging.info('Resetting tagged VLAN(s) on interface {interface}'.format( interface=interface)) update = True nb_vlan = self.get_or_create_vlan(vlan_id) interface.mode = self.dcim_choices['interface:mode']['Tagged'] interface.tagged_vlans = [nb_vlan] if nb_vlan else [] interface.untagged_vlan = None # if lldp reports a vlan-id with pvid elif lldp_vlan: pvid_vlan = [key for (key, value) in lldp_vlan.items() if value['pvid']] if len(pvid_vlan) > 0 and ( interface.mode is None or interface.mode.value != self.dcim_choices['interface:mode']['Access'] or interface.untagged_vlan is None or interface.untagged_vlan.vid != int(pvid_vlan[0])): logging.info('Resetting access VLAN on interface {interface}'.format( interface=interface)) update = True nb_vlan = self.get_or_create_vlan(pvid_vlan[0]) interface.mode = self.dcim_choices['interface:mode']['Access'] interface.untagged_vlan = nb_vlan.id return update, interface def create_netbox_nic(self, nic, mgmt=False): # TODO: add Optic Vendor, PN and Serial type = self.get_netbox_type_for_nic(nic) logging.info('Creating NIC {name} ({mac}) on {device}'.format( name=nic['name'], mac=nic['mac'], device=self.device.name)) nb_vlan = None params = { 'name': nic['name'], 'type': type, 'mgmt_only': mgmt, **self.custom_arg, } if not nic.get('virtual', False): params['mac_address'] = nic['mac'] interface = self.nb_net.interfaces.create(**params) if nic['vlan']: nb_vlan = self.get_or_create_vlan(nic['vlan']) interface.mode = 200 interface.tagged_vlans = [nb_vlan.id] interface.save() elif config.network.lldp and self.lldp.get_switch_vlan(nic['name']) is not None: # if lldp reports a vlan on an interface, tag the interface in access and set the vlan # report only the interface which has `pvid=yes` (ie: lldp.eth3.vlan.pvid=yes) # if pvid is not present, it'll be processed as a vlan tagged interface vlans = self.lldp.get_switch_vlan(nic['name']) for vid, vlan_infos in vlans.items(): nb_vlan = self.get_or_create_vlan(vid) if vlan_infos.get('vid'): interface.mode = self.dcim_choices['interface:mode']['Access'] interface.untagged_vlan = nb_vlan.id interface.save() # cable the interface if config.network.lldp: switch_ip = self.lldp.get_switch_ip(interface.name) switch_interface = self.lldp.get_switch_port(interface.name) if switch_ip and switch_interface: nic_update, interface = self.create_or_update_cable( switch_ip, switch_interface, interface ) if nic_update: interface.save() return interface def create_or_update_netbox_ip_on_interface(self, ip, interface): ''' Two behaviors: - Anycast IP * If IP exists and is in Anycast, create a new Anycast one * If IP exists and isn't assigned, take it * If server is decomissioned, then free IP will be taken - Normal IP (can be associated only once) * If IP doesn't exist, create it * If IP exists and isn't assigned, take it * If IP exists and interface is wrong, change interface ''' netbox_ips = nb.ipam.ip_addresses.filter( address=ip, ) if not len(netbox_ips): logging.info('Create new IP {ip} on {interface}'.format( ip=ip, interface=interface)) netbox_ip = nb.ipam.ip_addresses.create( address=ip, interface=interface.id, status=1, ) else: netbox_ip = netbox_ips[0] # If IP exists in anycast if netbox_ip.role and netbox_ip.role.label == 'Anycast': logging.debug('IP {} is Anycast..'.format(ip)) unassigned_anycast_ip = [x for x in netbox_ips if x.interface is None] assigned_anycast_ip = [x for x in netbox_ips if x.interface and x.interface.id == interface.id] # use the first available anycast ip if len(unassigned_anycast_ip): logging.info('Assigning existing Anycast IP {} to interface'.format(ip)) netbox_ip = unassigned_anycast_ip[0] netbox_ip.interface = interface netbox_ip.save() # or if everything is assigned to other servers elif not len(assigned_anycast_ip): logging.info('Creating Anycast IP {} and assigning it to interface'.format(ip)) netbox_ip = nb.ipam.ip_addresses.create( address=ip, interface=interface.id, status=1, role=self.ipam_choices['ip-address:role']['Anycast'], tenant=self.tenant.id if self.tenant else None, ) return netbox_ip else: if netbox_ip.interface is None: logging.info('Assigning existing IP {ip} to {interface}'.format( ip=ip, interface=interface)) elif netbox_ip.interface.id != interface.id: logging.info( 'Detected interface change for ip {ip}: old interface is ' '{old_interface} (id: {old_id}), new interface is {new_interface} ' ' (id: {new_id})' .format( old_interface=netbox_ip.interface, new_interface=interface, old_id=netbox_ip.id, new_id=interface.id, ip=netbox_ip.address )) else: return netbox_ip netbox_ip.interface = interface netbox_ip.save() return netbox_ip def create_or_update_netbox_network_cards(self): if config.update_all is None or config.update_network is None: return None logging.debug('Creating/Updating NIC...') # delete unknown interface nb_nics = self.get_netbox_network_cards() local_nics = [x['name'] for x in self.nics] for nic in nb_nics[:]: if nic.name not in local_nics: logging.info('Deleting netbox interface {name} because not present locally'.format( name=nic.name )) nb_nics.remove(nic) nic.delete() # delete IP on netbox that are not known on this server if len(nb_nics): netbox_ips = nb.ipam.ip_addresses.filter( interface_id=[x.id for x in nb_nics], ) all_local_ips = list(chain.from_iterable([ x['ip'] for x in self.nics if x['ip'] is not None ])) for netbox_ip in netbox_ips: if netbox_ip.address not in all_local_ips: logging.info('Unassigning IP {ip} from {interface}'.format( ip=netbox_ip.address, interface=netbox_ip.interface)) netbox_ip.interface = None netbox_ip.save() # update each nic for nic in self.nics: interface = self.get_netbox_network_card(nic) if not interface: logging.info('Interface {mac_address} not found, creating..'.format( mac_address=nic['mac']) ) interface = self.create_netbox_nic(nic) nic_update = 0 if nic['name'] != interface.name: logging.info('Updating interface {interface} name to: {name}'.format( interface=interface, name=nic['name'])) interface.name = nic['name'] nic_update += 1 ret, interface = self.reset_vlan_on_interface(nic, interface) nic_update += ret _type = self.get_netbox_type_for_nic(nic) if not interface.type or \ _type != interface.type.value: logging.info('Interface type is wrong, resetting') interface.type = _type nic_update += 1 if hasattr(interface, 'lag') and interface.lag is not None: local_lag_int = next( item for item in self.nics if item['name'] == interface.lag.name ) if nic['name'] not in local_lag_int['bonding_slaves']: logging.info('Interface has no LAG, resetting') nic_update += 1 interface.lag = None # cable the interface if config.network.lldp: switch_ip = self.lldp.get_switch_ip(interface.name) switch_interface = self.lldp.get_switch_port(interface.name) if switch_ip and switch_interface: ret, interface = self.create_or_update_cable( switch_ip, switch_interface, interface ) nic_update += ret if nic['ip']: # sync local IPs for ip in nic['ip']: self.create_or_update_netbox_ip_on_interface(ip, interface) if nic_update > 0: interface.save() self._set_bonding_interfaces() logging.debug('Finished updating NIC!') class ServerNetwork(Network): def __init__(self, server, *args, **kwargs): super(ServerNetwork, self).__init__(server, args, kwargs) self.ipmi = self.get_ipmi() if self.ipmi: self.nics.append(self.ipmi) self.server = server self.device = self.server.get_netbox_server() self.nb_net = nb.dcim self.custom_arg = {'device': getattr(self.device, "id", None)} self.custom_arg_id = {'device_id': getattr(self.device, "id", None)} def get_network_type(self): return 'server' def get_ipmi(self): ipmi = IPMI().parse() return ipmi def connect_interface_to_switch(self, switch_ip, switch_interface, nb_server_interface): logging.info('Interface {} is not connected to switch, trying to connect..'.format( nb_server_interface.name )) nb_mgmt_ip = nb.ipam.ip_addresses.get( address=switch_ip, ) if not nb_mgmt_ip: logging.error('Switch IP {} cannot be found in Netbox'.format(switch_ip)) return nb_server_interface try: nb_switch = nb_mgmt_ip.interface.device logging.info('Found a switch in Netbox based on LLDP infos: {} (id: {})'.format( switch_ip, nb_switch.id )) except KeyError: logging.error( 'Switch IP {} is found but not associated to a Netbox Switch Device'.format( switch_ip ) ) return nb_server_interface switch_interface = self.lldp.get_switch_port(nb_server_interface.name) nb_switch_interface = nb.dcim.interfaces.get( device=nb_switch, name=switch_interface, ) if nb_switch_interface is None: logging.error('Switch interface {} cannot be found'.format(switch_interface)) return nb_server_interface logging.info('Found interface {} on switch {}'.format( switch_interface, switch_ip, )) cable = nb.dcim.cables.create( termination_a_id=nb_server_interface.id, termination_a_type="dcim.interface", termination_b_id=nb_switch_interface.id, termination_b_type="dcim.interface", ) nb_server_interface.cable = cable logging.info( 'Connected interface {interface} with {switch_interface} of {switch_ip}'.format( interface=nb_server_interface.name, switch_interface=switch_interface, switch_ip=switch_ip, ) ) return nb_server_interface def create_or_update_cable(self, switch_ip, switch_interface, nb_server_interface): update = False if nb_server_interface.cable is None: update = True nb_server_interface = self.connect_interface_to_switch( switch_ip, switch_interface, nb_server_interface ) else: nb_sw_int = nb_server_interface.cable.termination_b nb_sw = nb_sw_int.device nb_mgmt_int = nb.dcim.interfaces.get( device_id=nb_sw.id, mgmt_only=True ) nb_mgmt_ip = nb.ipam.ip_addresses.get( interface_id=nb_mgmt_int.id ) if nb_mgmt_ip is None: logging.error( 'Switch {switch_ip} does not have IP on its management interface'.format( switch_ip=switch_ip, ) ) return update, nb_server_interface # Netbox IP is always IP/Netmask nb_mgmt_ip = nb_mgmt_ip.address.split('/')[0] if nb_mgmt_ip != switch_ip or \ nb_sw_int.name != switch_interface: logging.info('Netbox cable is not connected to correct ports, fixing..') logging.info( 'Deleting cable {cable_id} from {interface} to {switch_interface} of ' '{switch_ip}'.format( cable_id=nb_server_interface.cable.id, interface=nb_server_interface.name, switch_interface=nb_sw_int.name, switch_ip=nb_mgmt_ip, ) ) cable = nb.dcim.cables.get( nb_server_interface.cable.id ) cable.delete() update = True nb_server_interface = self.connect_interface_to_switch( switch_ip, switch_interface, nb_server_interface ) return update, nb_server_interface class VirtualNetwork(Network): def __init__(self, server, *args, **kwargs): super(VirtualNetwork, self).__init__(server, args, kwargs) self.server = server self.device = self.server.get_netbox_vm() self.nb_net = nb.virtualization self.custom_arg = {'virtual_machine': getattr(self.device, "id", None)} self.custom_arg_id = {'virtual_machine_id': getattr(self.device, "id", None)} dcim_c = nb.virtualization.interfaces.choices() for _choice_type in dcim_c: key = 'interface:{}'.format(_choice_type) self.dcim_choices[key] = {} for choice in dcim_c[_choice_type]: self.dcim_choices[key][choice['display_name']] = choice['value'] def get_network_type(self): return 'virtual'