643 lines
26 KiB
Python
643 lines
26 KiB
Python
import logging
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import os
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import re
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from itertools import chain
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import netifaces
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from netaddr import IPAddress
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from netbox_agent.config import config
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from netbox_agent.config import netbox_instance as nb
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from netbox_agent.ethtool import Ethtool
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from netbox_agent.ipmi import IPMI
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from netbox_agent.lldp import LLDP
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class Network(object):
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def __init__(self, server, *args, **kwargs):
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self.nics = []
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self.server = server
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self.tenant = self.server.get_netbox_tenant()
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self.lldp = LLDP() if config.network.lldp else None
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self.nics = self.scan()
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self.ipmi = None
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self.dcim_choices = {}
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dcim_c = nb.dcim.interfaces.choices()
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for _choice_type in dcim_c:
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key = 'interface:{}'.format(_choice_type)
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self.dcim_choices[key] = {}
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for choice in dcim_c[_choice_type]:
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self.dcim_choices[key][choice['display_name']] = choice['value']
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self.ipam_choices = {}
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ipam_c = nb.ipam.ip_addresses.choices()
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for _choice_type in ipam_c:
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key = 'ip-address:{}'.format(_choice_type)
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self.ipam_choices[key] = {}
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for choice in ipam_c[_choice_type]:
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self.ipam_choices[key][choice['display_name']] = choice['value']
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def get_network_type():
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return NotImplementedError
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def scan(self):
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nics = []
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for interface in os.listdir('/sys/class/net/'):
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# ignore if it's not a link (ie: bonding_masters etc)
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if not os.path.islink('/sys/class/net/{}'.format(interface)):
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continue
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if config.network.ignore_interfaces and \
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re.match(config.network.ignore_interfaces, interface):
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logging.debug('Ignore interface {interface}'.format(interface=interface))
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continue
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ip_addr = netifaces.ifaddresses(interface).get(netifaces.AF_INET, [])
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ip6_addr = netifaces.ifaddresses(interface).get(netifaces.AF_INET6, [])
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if config.network.ignore_ips:
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for i, ip in enumerate(ip_addr):
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if re.match(config.network.ignore_ips, ip['addr']):
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ip_addr.pop(i)
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for i, ip in enumerate(ip6_addr):
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if re.match(config.network.ignore_ips, ip['addr']):
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ip6_addr.pop(i)
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# netifaces returns a ipv6 netmask that netaddr does not understand.
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# this strips the netmask down to the correct format for netaddr,
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# and remove the interface.
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# ie, this:
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# {
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# 'addr': 'fe80::ec4:7aff:fe59:ec4a%eno1.50',
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# 'netmask': 'ffff:ffff:ffff:ffff::/64'
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# }
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#
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# becomes:
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# {
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# 'addr': 'fe80::ec4:7aff:fe59:ec4a',
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# 'netmask': 'ffff:ffff:ffff:ffff::'
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# }
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#
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for addr in ip6_addr:
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addr["addr"] = addr["addr"].replace('%{}'.format(interface), '')
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addr["mask"] = addr["mask"].split('/')[0]
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ip_addr.append(addr)
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mac = open('/sys/class/net/{}/address'.format(interface), 'r').read().strip()
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mtu = int(open('/sys/class/net/{}/mtu'.format(interface), 'r').read().strip())
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vlan = None
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if len(interface.split('.')) > 1:
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vlan = int(interface.split('.')[1])
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bonding = False
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bonding_slaves = []
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if os.path.isdir('/sys/class/net/{}/bonding'.format(interface)):
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bonding = True
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bonding_slaves = open(
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'/sys/class/net/{}/bonding/slaves'.format(interface)
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).read().split()
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# Tun and TAP support
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virtual = os.path.isfile(
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'/sys/class/net/{}/tun_flags'.format(interface)
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)
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nic = {
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'name': interface,
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'mac': mac if mac != '00:00:00:00:00:00' else None,
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'ip': [
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'{}/{}'.format(
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x['addr'],
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IPAddress(x['mask']).netmask_bits()
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) for x in ip_addr
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] if ip_addr else None, # FIXME: handle IPv6 addresses
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'ethtool': Ethtool(interface).parse(),
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'virtual': virtual,
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'vlan': vlan,
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'mtu': mtu,
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'bonding': bonding,
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'bonding_slaves': bonding_slaves,
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}
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nics.append(nic)
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return nics
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def _set_bonding_interfaces(self):
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bonding_nics = (x for x in self.nics if x['bonding'])
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for nic in bonding_nics:
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bond_int = self.get_netbox_network_card(nic)
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logging.debug('Setting slave interface for {name}'.format(
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name=bond_int.name
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))
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for slave_int in (
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self.get_netbox_network_card(slave_nic)
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for slave_nic in self.nics
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if slave_nic['name'] in nic['bonding_slaves']):
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if slave_int.lag is None or slave_int.lag.id != bond_int.id:
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logging.debug('Settting interface {name} as slave of {master}'.format(
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name=slave_int.name, master=bond_int.name
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))
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slave_int.lag = bond_int
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slave_int.save()
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else:
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return False
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return True
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def get_network_cards(self):
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return self.nics
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def get_netbox_network_card(self, nic):
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if nic['mac'] is None:
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interface = self.nb_net.interfaces.get(
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name=nic['name'],
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**self.custom_arg_id
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)
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else:
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interface = self.nb_net.interfaces.get(
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mac_address=nic['mac'],
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name=nic['name'],
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**self.custom_arg_id
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)
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return interface
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def get_netbox_network_cards(self):
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return self.nb_net.interfaces.filter(
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**self.custom_arg_id
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)
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def get_netbox_type_for_nic(self, nic):
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if self.get_network_type() == 'virtual':
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return self.dcim_choices['interface:type']['Virtual']
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if nic.get('bonding'):
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return self.dcim_choices['interface:type']['Link Aggregation Group (LAG)']
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if nic.get('bonding'):
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return self.dcim_choices['interface:type']['Link Aggregation Group (LAG)']
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if nic.get('virtual'):
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return self.dcim_choices['interface:type']['Virtual']
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if nic.get('ethtool') is None:
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return self.dcim_choices['interface:type']['Other']
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if nic['ethtool']['speed'] == '10000Mb/s':
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if nic['ethtool']['port'] in ('FIBRE', 'Direct Attach Copper'):
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return self.dcim_choices['interface:type']['SFP+ (10GE)']
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return self.dcim_choices['interface:type']['10GBASE-T (10GE)']
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elif nic['ethtool']['speed'] == '25000Mb/s':
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if nic['ethtool']['port'] in ('FIBRE', 'Direct Attach Copper'):
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return self.dcim_choices['interface:type']['SFP28 (25GE)']
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elif nic['ethtool']['speed'] == '1000Mb/s':
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if nic['ethtool']['port'] in ('FIBRE', 'Direct Attach Copper'):
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return self.dcim_choices['interface:type']['SFP (1GE)']
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return self.dcim_choices['interface:type']['1000BASE-T (1GE)']
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return self.dcim_choices['interface:type']['Other']
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def get_or_create_vlan(self, vlan_id):
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# FIXME: we may need to specify the datacenter
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# since users may have same vlan id in multiple dc
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vlan = nb.ipam.vlans.get(
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vid=vlan_id,
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)
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if vlan is None:
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vlan = nb.ipam.vlans.create(
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name='VLAN {}'.format(vlan_id),
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vid=vlan_id,
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)
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return vlan
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def reset_vlan_on_interface(self, nic, interface):
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update = False
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vlan_id = nic['vlan']
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lldp_vlan = self.lldp.get_switch_vlan(nic['name']) if config.network.lldp else None
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# For strange reason, we need to get the object from scratch
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# The object returned by pynetbox's save isn't always working (since pynetbox 6)
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interface = self.nb_net.interfaces.get(id=interface.id)
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# Handle the case were the local interface isn't an interface vlan as reported by Netbox
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# and that LLDP doesn't report a vlan-id
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if vlan_id is None and lldp_vlan is None and \
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(interface.mode is not None or len(interface.tagged_vlans) > 0):
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logging.info('Interface {interface} is not tagged, reseting mode'.format(
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interface=interface))
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update = True
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interface.mode = None
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interface.tagged_vlans = []
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interface.untagged_vlan = None
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# if the local interface is configured with a vlan, it's supposed to be taggued
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# if mode is either not set or not correctly configured or vlan are not
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# correctly configured, we reset the vlan
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elif vlan_id and (
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interface.mode is None or
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type(interface.mode) is not int and (
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hasattr(interface.mode, 'value') and
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interface.mode.value == self.dcim_choices['interface:mode']['Access'] or
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len(interface.tagged_vlans) != 1 or
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int(interface.tagged_vlans[0].vid) != int(vlan_id))):
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logging.info('Resetting tagged VLAN(s) on interface {interface}'.format(
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interface=interface))
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update = True
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nb_vlan = self.get_or_create_vlan(vlan_id)
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interface.mode = self.dcim_choices['interface:mode']['Tagged']
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interface.tagged_vlans = [nb_vlan] if nb_vlan else []
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interface.untagged_vlan = None
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# Finally if LLDP reports a vlan-id with the pvid attribute
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elif lldp_vlan:
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pvid_vlan = [key for (key, value) in lldp_vlan.items() if value['pvid']]
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if len(pvid_vlan) > 0 and (
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interface.mode is None or
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interface.mode.value != self.dcim_choices['interface:mode']['Access'] or
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interface.untagged_vlan is None or
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interface.untagged_vlan.vid != int(pvid_vlan[0])):
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logging.info('Resetting access VLAN on interface {interface}'.format(
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interface=interface))
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update = True
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nb_vlan = self.get_or_create_vlan(pvid_vlan[0])
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interface.mode = self.dcim_choices['interface:mode']['Access']
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interface.untagged_vlan = nb_vlan.id
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return update, interface
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def create_netbox_nic(self, nic, mgmt=False):
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# TODO: add Optic Vendor, PN and Serial
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nic_type = self.get_netbox_type_for_nic(nic)
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logging.info('Creating NIC {name} ({mac}) on {device}'.format(
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name=nic['name'], mac=nic['mac'], device=self.device.name))
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nb_vlan = None
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params = dict(self.custom_arg)
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params.update({
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'name': nic['name'],
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'type': nic_type,
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'mgmt_only': mgmt,
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})
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if nic['mac']:
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params['mac_address'] = nic['mac']
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if nic['mtu']:
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params['mtu'] = nic['mtu']
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interface = self.nb_net.interfaces.create(**params)
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if nic['vlan']:
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nb_vlan = self.get_or_create_vlan(nic['vlan'])
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interface.mode = self.dcim_choices['interface:mode']['Tagged']
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interface.tagged_vlans = [nb_vlan.id]
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interface.save()
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elif config.network.lldp and self.lldp.get_switch_vlan(nic['name']) is not None:
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# if lldp reports a vlan on an interface, tag the interface in access and set the vlan
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# report only the interface which has `pvid=yes` (ie: lldp.eth3.vlan.pvid=yes)
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# if pvid is not present, it'll be processed as a vlan tagged interface
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vlans = self.lldp.get_switch_vlan(nic['name'])
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for vid, vlan_infos in vlans.items():
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nb_vlan = self.get_or_create_vlan(vid)
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if vlan_infos.get('vid'):
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interface.mode = self.dcim_choices['interface:mode']['Access']
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interface.untagged_vlan = nb_vlan.id
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interface.save()
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# cable the interface
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if config.network.lldp:
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switch_ip = self.lldp.get_switch_ip(interface.name)
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switch_interface = self.lldp.get_switch_port(interface.name)
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if switch_ip and switch_interface:
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nic_update, interface = self.create_or_update_cable(
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switch_ip, switch_interface, interface
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)
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if nic_update:
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interface.save()
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return interface
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def create_or_update_netbox_ip_on_interface(self, ip, interface):
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'''
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Two behaviors:
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- Anycast IP
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* If IP exists and is in Anycast, create a new Anycast one
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* If IP exists and isn't assigned, take it
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* If server is decomissioned, then free IP will be taken
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- Normal IP (can be associated only once)
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* If IP doesn't exist, create it
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* If IP exists and isn't assigned, take it
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* If IP exists and interface is wrong, change interface
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'''
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netbox_ips = nb.ipam.ip_addresses.filter(
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address=ip,
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)
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if not netbox_ips:
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logging.info('Create new IP {ip} on {interface}'.format(
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ip=ip, interface=interface))
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query_params = {
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'address': ip,
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'status': "active",
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'assigned_object_type': self.assigned_object_type,
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'assigned_object_id': interface.id
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}
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netbox_ip = nb.ipam.ip_addresses.create(
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**query_params
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)
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return netbox_ip
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netbox_ip = list(netbox_ips)[0]
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# If IP exists in anycast
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if netbox_ip.role and netbox_ip.role.label == 'Anycast':
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logging.debug('IP {} is Anycast..'.format(ip))
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unassigned_anycast_ip = [x for x in netbox_ips if x.interface is None]
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assigned_anycast_ip = [x for x in netbox_ips if
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x.interface and x.interface.id == interface.id]
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# use the first available anycast ip
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if len(unassigned_anycast_ip):
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logging.info('Assigning existing Anycast IP {} to interface'.format(ip))
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netbox_ip = unassigned_anycast_ip[0]
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netbox_ip.interface = interface
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netbox_ip.save()
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# or if everything is assigned to other servers
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elif not len(assigned_anycast_ip):
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logging.info('Creating Anycast IP {} and assigning it to interface'.format(ip))
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query_params = {
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"address": ip,
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"status": "active",
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"role": self.ipam_choices['ip-address:role']['Anycast'],
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"tenant": self.tenant.id if self.tenant else None,
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"assigned_object_type": self.assigned_object_type,
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"assigned_object_id": interface.id
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}
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netbox_ip = nb.ipam.ip_addresses.create(**query_params)
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return netbox_ip
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else:
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ip_interface = getattr(netbox_ip, 'interface', None)
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assigned_object = getattr(netbox_ip, 'assigned_object', None)
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if not ip_interface or not assigned_object:
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logging.info('Assigning existing IP {ip} to {interface}'.format(
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ip=ip, interface=interface))
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elif (ip_interface and ip_interface.id != interface.id) or \
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(assigned_object and assigned_object_id != interface.id):
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old_interface = getattr(netbox_ip, "assigned_object", "n/a")
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logging.info(
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'Detected interface change for ip {ip}: old interface is '
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'{old_interface} (id: {old_id}), new interface is {new_interface} '
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' (id: {new_id})'
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.format(
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old_interface=old_interface, new_interface=interface,
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old_id=netbox_ip.id, new_id=interface.id, ip=netbox_ip.address
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))
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else:
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return netbox_ip
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netbox_ip.assigned_object_type = self.assigned_object_type
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netbox_ip.assigned_object_id = interface.id
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netbox_ip.save()
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def create_or_update_netbox_network_cards(self):
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if config.update_all is None or config.update_network is None:
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return None
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logging.debug('Creating/Updating NIC...')
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# delete unknown interface
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nb_nics = list(self.get_netbox_network_cards())
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local_nics = [x['name'] for x in self.nics]
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for nic in nb_nics:
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if nic.name not in local_nics:
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logging.info('Deleting netbox interface {name} because not present locally'.format(
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name=nic.name
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))
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nb_nics.remove(nic)
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nic.delete()
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# delete IP on netbox that are not known on this server
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if len(nb_nics):
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netbox_ips = nb.ipam.ip_addresses.filter(
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**{self.intf_type: [x.id for x in nb_nics]}
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)
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netbox_ips = list(netbox_ips)
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all_local_ips = list(chain.from_iterable([
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x['ip'] for x in self.nics if x['ip'] is not None
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]))
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for netbox_ip in netbox_ips:
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if netbox_ip.address not in all_local_ips:
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logging.info('Unassigning IP {ip} from {interface}'.format(
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ip=netbox_ip.address, interface=netbox_ip.assigned_object))
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netbox_ip.assigned_object_type = None
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netbox_ip.assigned_object_id = None
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netbox_ip.save()
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# update each nic
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for nic in self.nics:
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interface = self.get_netbox_network_card(nic)
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if not interface:
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logging.info('Interface {mac_address} not found, creating..'.format(
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mac_address=nic['mac'])
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)
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interface = self.create_netbox_nic(nic)
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nic_update = 0
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if nic['name'] != interface.name:
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logging.info('Updating interface {interface} name to: {name}'.format(
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interface=interface, name=nic['name']))
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interface.name = nic['name']
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nic_update += 1
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ret, interface = self.reset_vlan_on_interface(nic, interface)
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nic_update += ret
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if hasattr(interface, 'mtu'):
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if nic['mtu'] != interface.mtu:
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logging.info('Interface mtu is wrong, updating to: {mtu}'.format(
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mtu=nic['mtu']))
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interface.mtu = nic['mtu']
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nic_update += 1
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|
|
|
if hasattr(interface, 'type'):
|
|
_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)
|
|
|
|
if config.network.ipmi:
|
|
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)}
|
|
self.intf_type = "interface_id"
|
|
self.assigned_object_type = "dcim.interface"
|
|
|
|
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.assigned_object.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)}
|
|
self.intf_type = "vminterface_id"
|
|
self.assigned_object_type = "virtualization.vminterface"
|
|
|
|
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'
|