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Add support for bridge-only VNIs

This commit is contained in:
Joshua Boniface 2019-03-15 11:28:49 -04:00
parent 318a2353ea
commit 946442ae38
4 changed files with 224 additions and 64 deletions
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30
client-cli/pvc.py
View File

@ -616,8 +616,14 @@ def cli_network():
help='Description of the network; must be unique and not contain whitespace.'
)
@click.option(
'-n', '--domain', 'domain',
'-p', '--type', 'nettype',
required=True,
type=click.Choice(['managed', 'bridged']),
help='Network type; managed networks control IP addressing; bridged networks are simple vLAN bridges. All subsequent options are unused for bridged networks.'
)
@click.option(
'-n', '--domain', 'domain',
default=None,
help='Domain name of the network.'
)
@click.option(
@ -643,7 +649,7 @@ def cli_network():
@click.option(
'--dhcp/--no-dhcp', 'dhcp_flag',
is_flag=True,
default=None,
default=False,
help='Enable/disable IPv4 DHCP for clients on subnet.'
)
@click.option(
@ -659,23 +665,29 @@ def cli_network():
@click.argument(
'vni'
)
def net_add(vni, description, domain, ip_network, ip_gateway, ip6_network, ip6_gateway, dhcp_flag, dhcp_start, dhcp_end):
def net_add(vni, description, nettype, domain, ip_network, ip_gateway, ip6_network, ip6_gateway, dhcp_flag, dhcp_start, dhcp_end):
"""
Add a new virtual network with VXLAN identifier VNI to the cluster.
Example:
pvc network add 1001 --domain test.local --ipnet 10.1.1.0/24 --gateway 10.1.1.1
Examples:
pvc network add 101 --type bridged
> Creates vLAN 101 and a simple bridge on the VNI dev interface.
pvc network add 1001 --type managed --domain test.local --ipnet 10.1.1.0/24 --gateway 10.1.1.1
> Creates a VXLAN with ID 1001 on the VNI dev interface, with IPv4 managed networking.
IPv6 is fully supported with --ipnet6 and --gateway6 in addition to or instead of IPv4. PVC will configure DHCPv6 in a semi-managed configuration for the network if set.
"""
if not ip_network and not ip6_network:
click.echo('Usage: pvc network add [OPTIONS] VNI')
click.echo()
if nettype == 'managed' and not ip_network and not ip6_network:
click.echo('Error: At least one of "-i" / "--ipnet" or "-i6" / "--ipnet6" must be specified.')
exit(1)
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_network.add_network(zk_conn, vni, description, domain, ip_network, ip_gateway, ip6_network, ip6_gateway, dhcp_flag, dhcp_start, dhcp_end)
retcode, retmsg = pvc_network.add_network(zk_conn, vni, description, nettype, domain, ip_network, ip_gateway, ip6_network, ip6_gateway, dhcp_flag, dhcp_start, dhcp_end)
cleanup(retcode, retmsg, zk_conn)
###############################################################################

26
client-common/network.py
View File

@ -132,6 +132,7 @@ def getNetworkACLs(zk_conn, vni, _direction):
def getNetworkInformation(zk_conn, vni):
description = zkhandler.readdata(zk_conn, '/networks/{}'.format(vni))
nettype = zkhandler.readdata(zk_conn, '/networks/{}/nettype'.format(vni))
domain = zkhandler.readdata(zk_conn, '/networks/{}/domain'.format(vni))
ip6_network = zkhandler.readdata(zk_conn, '/networks/{}/ip6_network'.format(vni))
ip6_gateway = zkhandler.readdata(zk_conn, '/networks/{}/ip6_gateway'.format(vni))
@ -141,7 +142,7 @@ def getNetworkInformation(zk_conn, vni):
dhcp4_flag = zkhandler.readdata(zk_conn, '/networks/{}/dhcp4_flag'.format(vni))
dhcp4_start = zkhandler.readdata(zk_conn, '/networks/{}/dhcp4_start'.format(vni))
dhcp4_end = zkhandler.readdata(zk_conn, '/networks/{}/dhcp4_end'.format(vni))
return description, domain, ip6_network, ip6_gateway, dhcp6_flag, ip4_network, ip4_gateway, dhcp4_flag, dhcp4_start, dhcp4_end
return description, nettype, domain, ip6_network, ip6_gateway, dhcp6_flag, ip4_network, ip4_gateway, dhcp4_flag, dhcp4_start, dhcp4_end
def getDHCPLeaseInformation(zk_conn, vni, mac_address):
hostname = zkhandler.readdata(zk_conn, '/networks/{}/dhcp4_leases/{}/hostname'.format(vni, mac_address))
@ -164,7 +165,7 @@ def getACLInformation(zk_conn, vni, direction, description):
return order, description, rule
def formatNetworkInformation(zk_conn, vni, long_output):
description, domain, ip6_network, ip6_gateway, dhcp6_flag, ip4_network, ip4_gateway, dhcp4_flag, dhcp4_start, dhcp4_end = getNetworkInformation(zk_conn, vni)
description, nettype, domain, ip6_network, ip6_gateway, dhcp6_flag, ip4_network, ip4_gateway, dhcp4_flag, dhcp4_start, dhcp4_end = getNetworkInformation(zk_conn, vni)
if dhcp6_flag == "True":
dhcp6_flag_colour = ansiprint.green()
@ -182,7 +183,9 @@ def formatNetworkInformation(zk_conn, vni, long_output):
ainformation.append('')
# Basic information
ainformation.append('{}VNI:{} {}'.format(ansiprint.purple(), ansiprint.end(), vni))
ainformation.append('{}Type:{} {}'.format(ansiprint.purple(), ansiprint.end(), nettype))
ainformation.append('{}Description:{} {}'.format(ansiprint.purple(), ansiprint.end(), description))
if nettype == 'managed':
ainformation.append('{}Domain:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain))
if ip6_network != "None":
ainformation.append('')
@ -221,6 +224,7 @@ def formatNetworkInformation(zk_conn, vni, long_output):
def formatNetworkList(zk_conn, net_list):
net_list_output = []
nettype = dict()
description = dict()
domain = dict()
v6_flag = dict()
@ -243,7 +247,7 @@ def formatNetworkList(zk_conn, net_list):
# Gather information for printing
for net in net_list:
# get info
description[net], domain[net], ip6_network[net], ip6_gateway[net], dhcp6_flag[net], ip4_network[net], ip4_gateway[net], dhcp4_flag[net], dhcp4_start[net], dhcp4_end[net] = getNetworkInformation(zk_conn, net)
description[net], nettype[net], domain[net], ip6_network[net], ip6_gateway[net], dhcp6_flag[net], ip4_network[net], ip4_gateway[net], dhcp4_flag[net], dhcp4_start[net], dhcp4_end[net] = getNetworkInformation(zk_conn, net)
if ip4_network[net] != "None":
v4_flag_colour[net] = ansiprint.green()
@ -274,8 +278,9 @@ def formatNetworkList(zk_conn, net_list):
# Determine optimal column widths
# Dynamic columns: node_name, hypervisor, migrated
net_vni_length = 5
net_description_length = 13
net_domain_length = 8
net_description_length = 12
net_nettype_length = 8
net_domain_length = 6
net_v6_flag_length = 6
net_dhcp6_flag_length = 7
net_v4_flag_length = 6
@ -298,6 +303,7 @@ def formatNetworkList(zk_conn, net_list):
net_list_output_header = '{bold}\
{net_vni: <{net_vni_length}} \
{net_description: <{net_description_length}} \
{net_nettype: <{net_nettype_length}} \
{net_domain: <{net_domain_length}} \
{net_v6_flag: <{net_v6_flag_length}} \
{net_dhcp6_flag: <{net_dhcp6_flag_length}} \
@ -308,6 +314,7 @@ def formatNetworkList(zk_conn, net_list):
end_bold=ansiprint.end(),
net_vni_length=net_vni_length,
net_description_length=net_description_length,
net_nettype_length=net_nettype_length,
net_domain_length=net_domain_length,
net_v6_flag_length=net_v6_flag_length,
net_dhcp6_flag_length=net_dhcp6_flag_length,
@ -315,6 +322,7 @@ def formatNetworkList(zk_conn, net_list):
net_dhcp4_flag_length=net_dhcp4_flag_length,
net_vni='VNI',
net_description='Description',
net_nettype='Type',
net_domain='Domain',
net_v6_flag='IPv6',
net_dhcp6_flag='DHCPv6',
@ -327,6 +335,7 @@ def formatNetworkList(zk_conn, net_list):
'{bold}\
{net_vni: <{net_vni_length}} \
{net_description: <{net_description_length}} \
{net_nettype: <{net_nettype_length}} \
{net_domain: <{net_domain_length}} \
{v6_flag_colour}{net_v6_flag: <{net_v6_flag_length}}{colour_off} \
{dhcp6_flag_colour}{net_dhcp6_flag: <{net_dhcp6_flag_length}}{colour_off} \
@ -337,6 +346,7 @@ def formatNetworkList(zk_conn, net_list):
end_bold='',
net_vni_length=net_vni_length,
net_description_length=net_description_length,
net_nettype_length=net_nettype_length,
net_domain_length=net_domain_length,
net_v6_flag_length=net_v6_flag_length,
net_dhcp6_flag_length=net_dhcp6_flag_length,
@ -344,6 +354,7 @@ def formatNetworkList(zk_conn, net_list):
net_dhcp4_flag_length=net_dhcp4_flag_length,
net_vni=net,
net_description=description[net],
net_nettype=nettype[net],
net_domain=domain[net],
net_v6_flag=v6_flag[net],
v6_flag_colour=v6_flag_colour[net],
@ -545,8 +556,8 @@ def isValidIP(ipaddr):
#
# Direct functions
#
def add_network(zk_conn, vni, description, domain,
ip4_network, ip4_gateway, ip6_network, ip6_gateway,
def add_network(zk_conn, vni, description, nettype,
domain, ip4_network, ip4_gateway, ip6_network, ip6_gateway,
dhcp4_flag, dhcp4_start, dhcp4_end):
# Ensure start and end DHCP ranges are set if the flag is set
if dhcp4_flag and ( not dhcp4_start or not dhcp4_end ):
@ -572,6 +583,7 @@ def add_network(zk_conn, vni, description, domain,
# Add the new network to Zookeeper
zkhandler.writedata(zk_conn, {
'/networks/{}'.format(vni): description,
'/networks/{}/nettype'.format(vni): nettype,
'/networks/{}/domain'.format(vni): domain,
'/networks/{}/ip6_network'.format(vni): ip6_network,
'/networks/{}/ip6_gateway'.format(vni): ip6_gateway,

6
node-daemon/pvcd/Daemon.py
View File

@ -689,17 +689,17 @@ if enable_networking:
for network in new_network_list:
if not network in network_list:
d_network[network] = VXNetworkInstance.VXNetworkInstance(network, zk_conn, config, logger, this_node)
print(network)
if config['daemon_mode'] == 'coordinator':
if config['daemon_mode'] == 'coordinator' and d_network[network].nettype == 'managed':
dns_aggregator.add_network(d_network[network])
# Start primary functionality
if this_node.router_state == 'primary':
if this_node.router_state == 'primary' and d_network[network].nettype == 'managed':
d_network[network].createGateways()
d_network[network].startDHCPServer()
# Remove any deleted networks from the list
for network in network_list:
if not network in new_network_list:
if d_network[network].nettype == 'managed':
# Stop primary functionality
if this_node.router_state == 'primary':
d_network[network].stopDHCPServer()

144
node-daemon/pvcd/VXNetworkInstance.py
View File

@ -39,6 +39,53 @@ class VXNetworkInstance(object):
self.this_node = this_node
self.vni_dev = config['vni_dev']
self.nettype = zkhandler.readdata(self.zk_conn, '/networks/{}/nettype'.format(self.vni))
if self.nettype == 'bridged':
self.logger.out(
'Creating new bridged network',
prefix='VNI {}'.format(self.vni),
state='o'
)
self.init_bridged()
elif self.nettype == 'managed':
self.logger.out(
'Creating new managed network',
prefix='VNI {}'.format(self.vni),
state='o'
)
self.init_managed()
else:
self.logger.out(
'Invalid network type {}'.format(self.nettype),
prefix='VNI {}'.format(self.vni),
state='o'
)
pass
# Initialize a bridged network
def init_bridged(self):
self.old_description = None
self.description = None
self.vlan_nic = 'vlan{}'.format(self.vni)
self.bridge_nic = 'br{}'.format(self.vni)
# Zookeper handlers for changed states
@self.zk_conn.DataWatch('/networks/{}'.format(self.vni))
def watch_network_description(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
if data and self.description != data.decode('ascii'):
self.old_description = self.description
self.description = data.decode('ascii')
self.createNetworkBridged()
# Initialize a managed network
def init_managed(self):
self.old_description = None
self.description = None
self.domain = None
@ -56,11 +103,11 @@ class VXNetworkInstance(object):
self.vxlan_nic = 'vxlan{}'.format(self.vni)
self.bridge_nic = 'br{}'.format(self.vni)
self.nftables_netconf_filename = '{}/networks/{}.nft'.format(config['nft_dynamic_directory'], self.vni)
self.nftables_netconf_filename = '{}/networks/{}.nft'.format(self.config['nft_dynamic_directory'], self.vni)
self.firewall_rules = []
self.dhcp_server_daemon = None
self.dnsmasq_hostsdir = '{}/{}'.format(config['dnsmasq_dynamic_directory'], self.vni)
self.dnsmasq_hostsdir = '{}/{}'.format(self.config['dnsmasq_dynamic_directory'], self.vni)
self.dhcp_reservations = []
# Create the network hostsdir
@ -279,7 +326,7 @@ add rule inet filter forward ip6 saddr {netaddr6} counter jump {vxlannic}-out
self.firewall_rules_out = new_rules
self.updateFirewallRules()
self.createNetwork()
self.createNetworkManaged()
self.createFirewall()
def getvni(self):
@ -363,7 +410,52 @@ add rule inet filter forward ip6 saddr {netaddr6} counter jump {vxlannic}-out
nftables_base_filename = '{}/base.nft'.format(self.config['nft_dynamic_directory'])
common.reload_firewall_rules(self.logger, nftables_base_filename)
def createNetwork(self):
# Create bridged network configuration
def createNetworkBridged(self):
self.logger.out(
'Creating VLAN device on interface {}'.format(
self.vni_dev
),
prefix='VNI {}'.format(self.vni),
state='o'
)
common.run_os_command(
'ip link add link {} name {} type vlan id {}'.format(
self.vni_dev,
self.vlan_nic,
self.vni
)
)
common.run_os_command(
'brctl addbr {}'.format(
self.bridge_nic
)
)
common.run_os_command(
'brctl addif {} {}'.format(
self.bridge_nic,
self.vlan_nic
)
)
common.run_os_command(
'ip link set {} mtu 8800 up'.format(
self.vlan_nic
)
)
common.run_os_command(
'ip link set {} mtu 8800 up'.format(
self.bridge_nic
)
)
common.run_os_command(
# Disable IPv6 DAD on bridge NICs
'sysctl net.ipv6.conf.{}.accept_dad=0'.format(
self.bridge_nic
)
)
# Create managed network configuration
def createNetworkManaged(self):
self.logger.out(
'Creating VXLAN device on interface {}'.format(
self.vni_dev
@ -526,7 +618,51 @@ add rule inet filter forward ip6 saddr {netaddr6} counter jump {vxlannic}-out
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