848 lines
34 KiB
Python
848 lines
34 KiB
Python
#!/usr/bin/env python3
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# VXNetworkInstance.py - Class implementing a PVC VM network and run by pvcnoded
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018-2021 Joshua M. Boniface <joshua@boniface.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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###############################################################################
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import os
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import time
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from textwrap import dedent
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import daemon_lib.common as common
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class VXNetworkInstance(object):
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# Initialization function
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def __init__(self, vni, zkhandler, config, logger, this_node, dns_aggregator):
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self.vni = vni
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self.zkhandler = zkhandler
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self.config = config
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self.logger = logger
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self.this_node = this_node
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self.dns_aggregator = dns_aggregator
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self.vni_dev = config['vni_dev']
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self.vni_mtu = config['vni_mtu']
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self.bridge_dev = config['bridge_dev']
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self.nettype = self.zkhandler.read(('network.type', self.vni))
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if self.nettype == 'bridged':
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self.logger.out(
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'Creating new bridged network',
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prefix='VNI {}'.format(self.vni),
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state='o'
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)
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self.init_bridged()
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elif self.nettype == 'managed':
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self.logger.out(
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'Creating new managed network',
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prefix='VNI {}'.format(self.vni),
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state='o'
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)
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self.init_managed()
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else:
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self.logger.out(
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'Invalid network type {}'.format(self.nettype),
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prefix='VNI {}'.format(self.vni),
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state='o'
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)
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pass
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# Initialize a bridged network
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def init_bridged(self):
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self.old_description = None
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self.description = None
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self.vlan_nic = 'vlan{}'.format(self.vni)
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self.bridge_nic = 'vmbr{}'.format(self.vni)
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# Zookeper handlers for changed states
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network', self.vni))
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def watch_network_description(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.description != data.decode('ascii'):
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self.old_description = self.description
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self.description = data.decode('ascii')
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self.createNetworkBridged()
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# Initialize a managed network
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def init_managed(self):
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self.old_description = None
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self.description = None
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self.domain = None
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self.name_servers = None
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self.ip6_gateway = self.zkhandler.read(('network.ip6.gateway', self.vni))
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self.ip6_network = self.zkhandler.read(('network.ip6.network', self.vni))
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self.ip6_cidrnetmask = self.zkhandler.read(('network.ip6.network', self.vni)).split('/')[-1]
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self.dhcp6_flag = self.zkhandler.read(('network.ip6.dhcp', self.vni))
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self.ip4_gateway = self.zkhandler.read(('network.ip4.gateway', self.vni))
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self.ip4_network = self.zkhandler.read(('network.ip4.network', self.vni))
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self.ip4_cidrnetmask = self.zkhandler.read(('network.ip4.network', self.vni)).split('/')[-1]
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self.dhcp4_flag = self.zkhandler.read(('network.ip4.dhcp', self.vni))
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self.dhcp4_start = self.zkhandler.read(('network.ip4.dhcp_start', self.vni))
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self.dhcp4_end = self.zkhandler.read(('network.ip4.dhcp_end', self.vni))
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self.vxlan_nic = 'vxlan{}'.format(self.vni)
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self.bridge_nic = 'vmbr{}'.format(self.vni)
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self.nftables_netconf_filename = '{}/networks/{}.nft'.format(self.config['nft_dynamic_directory'], self.vni)
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self.firewall_rules = []
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self.dhcp_server_daemon = None
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self.dnsmasq_hostsdir = '{}/{}'.format(self.config['dnsmasq_dynamic_directory'], self.vni)
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self.dhcp_reservations = []
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# Create the network hostsdir
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common.run_os_command(
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'/bin/mkdir --parents {}'.format(
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self.dnsmasq_hostsdir
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)
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)
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self.firewall_rules_base = """# Rules for network {vxlannic}
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add chain inet filter {vxlannic}-in
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add chain inet filter {vxlannic}-out
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add rule inet filter {vxlannic}-in counter
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add rule inet filter {vxlannic}-out counter
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# Allow ICMP traffic into the router from network
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add rule inet filter input ip protocol icmp meta iifname {bridgenic} counter accept
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add rule inet filter input ip6 nexthdr icmpv6 meta iifname {bridgenic} counter accept
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# Allow DNS, DHCP, and NTP traffic into the router from network
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add rule inet filter input tcp dport 53 meta iifname {bridgenic} counter accept
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add rule inet filter input udp dport 53 meta iifname {bridgenic} counter accept
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add rule inet filter input udp dport 67 meta iifname {bridgenic} counter accept
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add rule inet filter input udp dport 123 meta iifname {bridgenic} counter accept
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add rule inet filter input ip6 nexthdr udp udp dport 547 meta iifname {bridgenic} counter accept
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# Allow metadata API into the router from network
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add rule inet filter input tcp dport 80 meta iifname {bridgenic} counter accept
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# Block traffic into the router from network
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add rule inet filter input meta iifname {bridgenic} counter drop
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""".format(
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vxlannic=self.vxlan_nic,
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bridgenic=self.bridge_nic
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)
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self.firewall_rules_v4 = """# Jump from forward chain to this chain when matching net (IPv4)
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add rule inet filter forward ip daddr {netaddr4} counter jump {vxlannic}-in
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add rule inet filter forward ip saddr {netaddr4} counter jump {vxlannic}-out
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""".format(
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netaddr4=self.ip4_network,
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vxlannic=self.vxlan_nic,
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)
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self.firewall_rules_v6 = """# Jump from forward chain to this chain when matching net (IPv4)
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add rule inet filter forward ip6 daddr {netaddr6} counter jump {vxlannic}-in
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add rule inet filter forward ip6 saddr {netaddr6} counter jump {vxlannic}-out
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""".format(
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netaddr6=self.ip6_network,
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vxlannic=self.vxlan_nic,
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)
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self.firewall_rules_in = self.zkhandler.children(('network.rule.in', self.vni))
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self.firewall_rules_out = self.zkhandler.children(('network.rule.out', self.vni))
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# Zookeper handlers for changed states
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network', self.vni))
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def watch_network_description(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.description != data.decode('ascii'):
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self.old_description = self.description
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self.description = data.decode('ascii')
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.domain', self.vni))
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def watch_network_domain(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.domain != data.decode('ascii'):
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domain = data.decode('ascii')
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if self.dhcp_server_daemon:
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self.dns_aggregator.remove_network(self)
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self.domain = domain
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if self.dhcp_server_daemon:
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self.dns_aggregator.add_network(self)
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.nameservers', self.vni))
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def watch_network_name_servers(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.name_servers != data.decode('ascii'):
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name_servers = data.decode('ascii').split(',')
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if self.dhcp_server_daemon:
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self.dns_aggregator.remove_network(self)
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self.name_servers = name_servers
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if self.dhcp_server_daemon:
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self.dns_aggregator.add_network(self)
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip6.network', self.vni))
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def watch_network_ip6_network(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.ip6_network != data.decode('ascii'):
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ip6_network = data.decode('ascii')
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self.ip6_network = ip6_network
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self.ip6_cidrnetmask = ip6_network.split('/')[-1]
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip6.gateway', self.vni))
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def watch_network_gateway6(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.ip6_gateway != data.decode('ascii'):
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orig_gateway = self.ip6_gateway
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if self.this_node.router_state in ['primary', 'takeover']:
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if orig_gateway:
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self.removeGateway6Address()
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self.ip6_gateway = data.decode('ascii')
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if self.this_node.router_state in ['primary', 'takeover']:
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self.createGateway6Address()
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip6.dhcp', self.vni))
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def watch_network_dhcp6_status(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.dhcp6_flag != (data.decode('ascii') == 'True'):
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self.dhcp6_flag = (data.decode('ascii') == 'True')
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if self.dhcp6_flag and not self.dhcp_server_daemon and self.this_node.router_state in ['primary', 'takeover']:
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self.startDHCPServer()
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elif self.dhcp_server_daemon and not self.dhcp4_flag and self.this_node.router_state in ['primary', 'takeover']:
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self.stopDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip4.network', self.vni))
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def watch_network_ip4_network(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.ip4_network != data.decode('ascii'):
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ip4_network = data.decode('ascii')
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self.ip4_network = ip4_network
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self.ip4_cidrnetmask = ip4_network.split('/')[-1]
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip4.gateway', self.vni))
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def watch_network_gateway4(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.ip4_gateway != data.decode('ascii'):
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orig_gateway = self.ip4_gateway
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if self.this_node.router_state in ['primary', 'takeover']:
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if orig_gateway:
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self.removeGateway4Address()
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self.ip4_gateway = data.decode('ascii')
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if self.this_node.router_state in ['primary', 'takeover']:
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self.createGateway4Address()
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip4.dhcp', self.vni))
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def watch_network_dhcp4_status(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.dhcp4_flag != (data.decode('ascii') == 'True'):
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self.dhcp4_flag = (data.decode('ascii') == 'True')
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if self.dhcp4_flag and not self.dhcp_server_daemon and self.this_node.router_state in ['primary', 'takeover']:
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self.startDHCPServer()
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elif self.dhcp_server_daemon and not self.dhcp6_flag and self.this_node.router_state in ['primary', 'takeover']:
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self.stopDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip4.dhcp_start', self.vni))
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def watch_network_dhcp4_start(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.dhcp4_start != data.decode('ascii'):
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self.dhcp4_start = data.decode('ascii')
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.DataWatch(self.zkhandler.schema.path('network.ip4.dhcp_end', self.vni))
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def watch_network_dhcp4_end(data, stat, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if data and self.dhcp4_end != data.decode('ascii'):
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self.dhcp4_end = data.decode('ascii')
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.ChildrenWatch(self.zkhandler.schema.path('network.reservation', self.vni))
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def watch_network_dhcp_reservations(new_reservations, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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if self.dhcp_reservations != new_reservations:
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old_reservations = self.dhcp_reservations
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self.dhcp_reservations = new_reservations
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if self.this_node.router_state in ['primary', 'takeover']:
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self.updateDHCPReservations(old_reservations, new_reservations)
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if self.dhcp_server_daemon:
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self.stopDHCPServer()
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self.startDHCPServer()
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@self.zkhandler.zk_conn.ChildrenWatch(self.zkhandler.schema.path('network.rule.in', self.vni))
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def watch_network_firewall_rules_in(new_rules, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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# Don't run on the first pass
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if self.firewall_rules_in != new_rules:
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self.firewall_rules_in = new_rules
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self.updateFirewallRules()
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@self.zkhandler.zk_conn.ChildrenWatch(self.zkhandler.schema.path('network.rule.out', self.vni))
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def watch_network_firewall_rules_out(new_rules, event=''):
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if event and event.type == 'DELETED':
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# The key has been deleted after existing before; terminate this watcher
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# because this class instance is about to be reaped in Daemon.py
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return False
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# Don't run on the first pass
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if self.firewall_rules_out != new_rules:
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self.firewall_rules_out = new_rules
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self.updateFirewallRules()
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self.createNetworkManaged()
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self.createFirewall()
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def getvni(self):
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return self.vni
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def updateDHCPReservations(self, old_reservations_list, new_reservations_list):
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for reservation in new_reservations_list:
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if reservation not in old_reservations_list:
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# Add new reservation file
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filename = '{}/{}'.format(self.dnsmasq_hostsdir, reservation)
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ipaddr = self.zkhandler.read(('network.reservation', self.vni, 'reservation.ip', reservation))
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entry = '{},{}'.format(reservation, ipaddr)
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# Write the entry
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with open(filename, 'w') as outfile:
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outfile.write(entry)
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for reservation in old_reservations_list:
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if reservation not in new_reservations_list:
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# Remove old reservation file
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filename = '{}/{}'.format(self.dnsmasq_hostsdir, reservation)
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try:
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os.remove(filename)
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self.dhcp_server_daemon.signal('hup')
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except Exception:
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pass
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def updateFirewallRules(self):
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if not self.ip4_network:
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return
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self.logger.out(
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'Updating firewall rules',
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prefix='VNI {}'.format(self.vni),
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state='o'
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)
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ordered_acls_in = {}
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ordered_acls_out = {}
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sorted_acl_list = {'in': [], 'out': []}
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full_ordered_rules = []
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for acl in self.firewall_rules_in:
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order = self.zkhandler.read(('network.rule.in', self.vni, 'acl.order', acl))
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ordered_acls_in[order] = acl
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for acl in self.firewall_rules_out:
|
|
order = self.zkhandler.read(('network.rule.out', self.vni, 'acl.order', acl))
|
|
ordered_acls_out[order] = acl
|
|
|
|
for order in sorted(ordered_acls_in.keys()):
|
|
sorted_acl_list['in'].append(ordered_acls_in[order])
|
|
for order in sorted(ordered_acls_out.keys()):
|
|
sorted_acl_list['out'].append(ordered_acls_out[order])
|
|
|
|
for direction in 'in', 'out':
|
|
for acl in sorted_acl_list[direction]:
|
|
rule_prefix = "add rule inet filter vxlan{}-{} counter".format(self.vni, direction)
|
|
rule_data = self.zkhandler.read((f'network.rule.{direction}', self.vni, 'acl.rule', acl))
|
|
rule = '{} {}'.format(rule_prefix, rule_data)
|
|
full_ordered_rules.append(rule)
|
|
|
|
firewall_rules = self.firewall_rules_base
|
|
if self.ip6_gateway != 'None':
|
|
firewall_rules += self.firewall_rules_v6
|
|
if self.ip4_gateway != 'None':
|
|
firewall_rules += self.firewall_rules_v4
|
|
|
|
output = "{}\n# User rules\n{}\n".format(
|
|
firewall_rules,
|
|
'\n'.join(full_ordered_rules))
|
|
|
|
with open(self.nftables_netconf_filename, 'w') as nfnetfile:
|
|
nfnetfile.write(dedent(output))
|
|
|
|
# Reload firewall rules
|
|
nftables_base_filename = '{}/base.nft'.format(self.config['nft_dynamic_directory'])
|
|
common.reload_firewall_rules(nftables_base_filename, logger=self.logger)
|
|
|
|
# Create bridged network configuration
|
|
def createNetworkBridged(self):
|
|
self.logger.out(
|
|
'Creating bridged vLAN device {} on interface {}'.format(
|
|
self.vlan_nic,
|
|
self.bridge_dev
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
|
|
# Create vLAN interface
|
|
common.run_os_command(
|
|
'ip link add link {} name {} type vlan id {}'.format(
|
|
self.bridge_dev,
|
|
self.vlan_nic,
|
|
self.vni
|
|
)
|
|
)
|
|
# Create bridge interface
|
|
common.run_os_command(
|
|
'brctl addbr {}'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
|
|
# Set MTU of vLAN and bridge NICs
|
|
vx_mtu = self.vni_mtu
|
|
common.run_os_command(
|
|
'ip link set {} mtu {} up'.format(
|
|
self.vlan_nic,
|
|
vx_mtu
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'ip link set {} mtu {} up'.format(
|
|
self.bridge_nic,
|
|
vx_mtu
|
|
)
|
|
)
|
|
|
|
# Disable tx checksum offload on bridge interface (breaks DHCP on Debian < 9)
|
|
common.run_os_command(
|
|
'ethtool -K {} tx off'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
|
|
# Disable IPv6 on bridge interface (prevents leakage)
|
|
common.run_os_command(
|
|
'sysctl net.ipv6.conf.{}.disable_ipv6=1'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
|
|
# Add vLAN interface to bridge interface
|
|
common.run_os_command(
|
|
'brctl addif {} {}'.format(
|
|
self.bridge_nic,
|
|
self.vlan_nic
|
|
)
|
|
)
|
|
|
|
# Create managed network configuration
|
|
def createNetworkManaged(self):
|
|
self.logger.out(
|
|
'Creating VXLAN device on interface {}'.format(
|
|
self.vni_dev
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
|
|
# Create VXLAN interface
|
|
common.run_os_command(
|
|
'ip link add {} type vxlan id {} dstport 4789 dev {}'.format(
|
|
self.vxlan_nic,
|
|
self.vni,
|
|
self.vni_dev
|
|
)
|
|
)
|
|
# Create bridge interface
|
|
common.run_os_command(
|
|
'brctl addbr {}'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
|
|
# Set MTU of VXLAN and bridge NICs
|
|
vx_mtu = self.vni_mtu - 50
|
|
common.run_os_command(
|
|
'ip link set {} mtu {} up'.format(
|
|
self.vxlan_nic,
|
|
vx_mtu
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'ip link set {} mtu {} up'.format(
|
|
self.bridge_nic,
|
|
vx_mtu
|
|
)
|
|
)
|
|
|
|
# Disable tx checksum offload on bridge interface (breaks DHCP on Debian < 9)
|
|
common.run_os_command(
|
|
'ethtool -K {} tx off'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
|
|
# Disable IPv6 DAD on bridge interface
|
|
common.run_os_command(
|
|
'sysctl net.ipv6.conf.{}.accept_dad=0'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
|
|
# Add VXLAN interface to bridge interface
|
|
common.run_os_command(
|
|
'brctl addif {} {}'.format(
|
|
self.bridge_nic,
|
|
self.vxlan_nic
|
|
)
|
|
)
|
|
|
|
def createFirewall(self):
|
|
if self.nettype == 'managed':
|
|
# For future use
|
|
self.updateFirewallRules()
|
|
|
|
def createGateways(self):
|
|
if self.nettype == 'managed':
|
|
if self.ip6_gateway != 'None':
|
|
self.createGateway6Address()
|
|
if self.ip4_gateway != 'None':
|
|
self.createGateway4Address()
|
|
|
|
def createGateway6Address(self):
|
|
if self.this_node.router_state in ['primary', 'takeover']:
|
|
self.logger.out(
|
|
'Creating gateway {}/{} on interface {}'.format(
|
|
self.ip6_gateway,
|
|
self.ip6_cidrnetmask,
|
|
self.bridge_nic
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
common.createIPAddress(self.ip6_gateway, self.ip6_cidrnetmask, self.bridge_nic)
|
|
|
|
def createGateway4Address(self):
|
|
if self.this_node.router_state in ['primary', 'takeover']:
|
|
self.logger.out(
|
|
'Creating gateway {}/{} on interface {}'.format(
|
|
self.ip4_gateway,
|
|
self.ip4_cidrnetmask,
|
|
self.bridge_nic
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
common.createIPAddress(self.ip4_gateway, self.ip4_cidrnetmask, self.bridge_nic)
|
|
|
|
def startDHCPServer(self):
|
|
if self.this_node.router_state in ['primary', 'takeover'] and self.nettype == 'managed':
|
|
self.logger.out(
|
|
'Starting dnsmasq DHCP server on interface {}'.format(
|
|
self.bridge_nic
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
|
|
# Recreate the environment we need for dnsmasq
|
|
pvcnoded_config_file = os.environ['PVCD_CONFIG_FILE']
|
|
dhcp_environment = {
|
|
'DNSMASQ_BRIDGE_INTERFACE': self.bridge_nic,
|
|
'PVCD_CONFIG_FILE': pvcnoded_config_file
|
|
}
|
|
|
|
# Define the dnsmasq config fragments
|
|
dhcp_configuration_base = [
|
|
'--domain-needed',
|
|
'--bogus-priv',
|
|
'--no-hosts',
|
|
'--dhcp-authoritative',
|
|
'--filterwin2k',
|
|
'--expand-hosts',
|
|
'--domain-needed',
|
|
'--domain={}'.format(self.domain),
|
|
'--local=/{}/'.format(self.domain),
|
|
'--log-facility=-',
|
|
'--log-dhcp',
|
|
'--keep-in-foreground',
|
|
'--leasefile-ro',
|
|
'--dhcp-script={}/pvcnoded/dnsmasq-zookeeper-leases.py'.format(os.getcwd()),
|
|
'--dhcp-hostsdir={}'.format(self.dnsmasq_hostsdir),
|
|
'--bind-interfaces',
|
|
]
|
|
dhcp_configuration_v4 = [
|
|
'--listen-address={}'.format(self.ip4_gateway),
|
|
'--auth-zone={}'.format(self.domain),
|
|
'--auth-peer={}'.format(self.ip4_gateway),
|
|
'--auth-server={}'.format(self.ip4_gateway),
|
|
'--auth-sec-servers={}'.format(self.ip4_gateway),
|
|
]
|
|
dhcp_configuration_v4_dhcp = [
|
|
'--dhcp-option=option:ntp-server,{}'.format(self.ip4_gateway),
|
|
'--dhcp-range={},{},48h'.format(self.dhcp4_start, self.dhcp4_end),
|
|
]
|
|
dhcp_configuration_v6 = [
|
|
'--listen-address={}'.format(self.ip6_gateway),
|
|
'--auth-zone={}'.format(self.domain),
|
|
'--auth-peer={}'.format(self.ip6_gateway),
|
|
'--auth-server={}'.format(self.ip6_gateway),
|
|
'--auth-sec-servers={}'.format(self.ip6_gateway),
|
|
'--dhcp-option=option6:dns-server,[{}]'.format(self.ip6_gateway),
|
|
'--dhcp-option=option6:sntp-server,[{}]'.format(self.ip6_gateway),
|
|
'--enable-ra',
|
|
]
|
|
dhcp_configuration_v6_dualstack = [
|
|
'--dhcp-range=net:{nic},::,constructor:{nic},ra-stateless,ra-names'.format(nic=self.bridge_nic),
|
|
]
|
|
dhcp_configuration_v6_only = [
|
|
'--auth-server={}'.format(self.ip6_gateway),
|
|
'--dhcp-range=net:{nic},::2,::ffff:ffff:ffff:ffff,constructor:{nic},64,24h'.format(nic=self.bridge_nic),
|
|
]
|
|
|
|
# Assemble the DHCP configuration
|
|
dhcp_configuration = dhcp_configuration_base
|
|
if self.dhcp6_flag:
|
|
dhcp_configuration += dhcp_configuration_v6
|
|
if self.dhcp4_flag:
|
|
dhcp_configuration += dhcp_configuration_v6_dualstack
|
|
else:
|
|
dhcp_configuration += dhcp_configuration_v6_only
|
|
else:
|
|
dhcp_configuration += dhcp_configuration_v4
|
|
if self.dhcp4_flag:
|
|
dhcp_configuration += dhcp_configuration_v4_dhcp
|
|
|
|
# Start the dnsmasq process in a thread
|
|
print('/usr/sbin/dnsmasq {}'.format(' '.join(dhcp_configuration)))
|
|
self.dhcp_server_daemon = common.run_os_daemon(
|
|
'/usr/sbin/dnsmasq {}'.format(
|
|
' '.join(dhcp_configuration)
|
|
),
|
|
environment=dhcp_environment,
|
|
logfile='{}/dnsmasq-{}.log'.format(self.config['dnsmasq_log_directory'], self.vni)
|
|
)
|
|
|
|
# Remove network
|
|
def removeNetwork(self):
|
|
if self.nettype == 'bridged':
|
|
self.removeNetworkBridged()
|
|
elif self.nettype == 'managed':
|
|
self.removeNetworkManaged()
|
|
|
|
# Remove bridged network configuration
|
|
def removeNetworkBridged(self):
|
|
self.logger.out(
|
|
'Removing VNI device on interface {}'.format(
|
|
self.vni_dev
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
common.run_os_command(
|
|
'ip link set {} down'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'ip link set {} down'.format(
|
|
self.vlan_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'brctl delif {} {}'.format(
|
|
self.bridge_nic,
|
|
self.vlan_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'brctl delbr {}'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'ip link delete {}'.format(
|
|
self.vlan_nic
|
|
)
|
|
)
|
|
|
|
# Remove managed network configuration
|
|
def removeNetworkManaged(self):
|
|
self.logger.out(
|
|
'Removing VNI device on interface {}'.format(
|
|
self.vni_dev
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
common.run_os_command(
|
|
'ip link set {} down'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'ip link set {} down'.format(
|
|
self.vxlan_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'brctl delif {} {}'.format(
|
|
self.bridge_nic,
|
|
self.vxlan_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'brctl delbr {}'.format(
|
|
self.bridge_nic
|
|
)
|
|
)
|
|
common.run_os_command(
|
|
'ip link delete {}'.format(
|
|
self.vxlan_nic
|
|
)
|
|
)
|
|
|
|
def removeFirewall(self):
|
|
self.logger.out(
|
|
'Removing firewall rules',
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
|
|
try:
|
|
os.remove(self.nftables_netconf_filename)
|
|
except Exception:
|
|
pass
|
|
|
|
# Reload firewall rules
|
|
nftables_base_filename = '{}/base.nft'.format(self.config['nft_dynamic_directory'])
|
|
common.reload_firewall_rules(nftables_base_filename, logger=self.logger)
|
|
|
|
def removeGateways(self):
|
|
if self.nettype == 'managed':
|
|
if self.ip6_gateway != 'None':
|
|
self.removeGateway6Address()
|
|
if self.ip4_gateway != 'None':
|
|
self.removeGateway4Address()
|
|
|
|
def removeGateway6Address(self):
|
|
self.logger.out(
|
|
'Removing gateway {}/{} from interface {}'.format(
|
|
self.ip6_gateway,
|
|
self.ip6_cidrnetmask,
|
|
self.bridge_nic
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
common.removeIPAddress(self.ip6_gateway, self.ip6_cidrnetmask, self.bridge_nic)
|
|
|
|
def removeGateway4Address(self):
|
|
self.logger.out(
|
|
'Removing gateway {}/{} from interface {}'.format(
|
|
self.ip4_gateway,
|
|
self.ip4_cidrnetmask,
|
|
self.bridge_nic
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
common.removeIPAddress(self.ip4_gateway, self.ip4_cidrnetmask, self.bridge_nic)
|
|
|
|
def stopDHCPServer(self):
|
|
if self.nettype == 'managed' and self.dhcp_server_daemon:
|
|
self.logger.out(
|
|
'Stopping dnsmasq DHCP server on interface {}'.format(
|
|
self.bridge_nic
|
|
),
|
|
prefix='VNI {}'.format(self.vni),
|
|
state='o'
|
|
)
|
|
# Terminate, then kill
|
|
self.dhcp_server_daemon.signal('term')
|
|
time.sleep(0.2)
|
|
self.dhcp_server_daemon.signal('kill')
|
|
self.dhcp_server_daemon = None
|