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topology_converter.py
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#!/usr/bin/env python3
#
# Topology Converter
# converts a given topology.dot file to a Vagrantfile
# can use the virtualbox or libvirt Vagrant providers
# Initially written by Eric Pulvino 2015-10-19
#
# hosted @ https://github.com/cumulusnetworks/topology_converter
#
#
version = "4.7.0"
import os
import re
import sys
import time
import pprint
import jinja2
import argparse
import importlib
import pydotplus
import ipaddress
from operator import itemgetter
pp = pprint.PrettyPrinter(depth=6)
relpath_to_me = os.path.relpath(os.path.dirname(os.path.abspath(__file__)), os.getcwd())
class styles:
# Use these for text colors
HEADER = '\033[95m'
BLUE = '\033[94m'
GREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
ENDC = '\033[0m'
parser = argparse.ArgumentParser(description='Topology Converter -- Convert \
topology.dot files into Vagrantfiles')
parser.add_argument('topology_file',
help='provide a topology file as input')
parser.add_argument('-v', '--verbose', action='count', default=0,
help='increases logging verbosity (repeat for more verbosity (3 max))')
parser.add_argument('-p', '--provider', choices=["libvirt", "virtualbox"],
help='specifies the provider to be used in the Vagrantfile, \
script supports "virtualbox" or "libvirt", default is virtualbox.')
parser.add_argument('-a', '--ansible-hostfile', action='store_true',
help='When specified, ansible hostfile will be generated \
from a dummy playbook run.')
parser.add_argument('-c', '--create-mgmt-network', action='store_true',
help='When specified, a mgmt switch and server will be created. \
A /24 is assumed for the mgmt network. mgmt_ip=X.X.X.X will be \
read from each device to create a Static DHCP mapping for \
the oob-mgmt-server.')
parser.add_argument('-cco', '--create-mgmt-configs-only', action='store_true',
help='Calling this option does NOT regenerate the Vagrantfile \
but it DOES regenerate the configuration files that come \
packaged with the mgmt-server in the "-c" option. This option \
is typically used after the "-c" has been called to generate \
a Vagrantfile with an oob-mgmt-server and oob-mgmt-switch to \
modify the configuraiton files placed on the oob-mgmt-server \
device. Useful when you do not want to regenerate the \
vagrantfile but you do want to make changes to the \
OOB-mgmt-server configuration templates.')
parser.add_argument('-cmd', '--create-mgmt-device', action='store_true',
help='Calling this option creates the mgmt device and runs the \
auto_mgmt_network template engine to load configurations on to \
the mgmt device but it does not create the OOB-MGMT-SWITCH or \
associated connections. Useful when you are manually specifying \
the construction of the management network but still want to have \
the OOB-mgmt-server created automatically.')
parser.add_argument('-t', '--template', action='append', nargs=2,
help='Specify an additional jinja2 template and a destination \
for that file to be rendered to.')
parser.add_argument('-i', '--tunnel-ip',
help='FOR LIBVIRT PROVIDER: this option overrides the tunnel_ip \
setting for all nodes. This option provides another method of \
udp port control in that all ports are bound to the specified \
ip address. Specify "random" to use a random localhost IP.')
parser.add_argument('-s', '--start-port', type=int,
help='FOR LIBVIRT PROVIDER: this option overrides \
the default starting-port 8000 with a new value. \
Use ports over 1024 to avoid permissions issues. If using \
this option with the virtualbox provider it will be ignored.')
parser.add_argument('-g', '--port-gap', type=int,
help='FOR LIBVIRT PROVIDER: this option overrides the \
default port-gap of 1000 with a new value. This number \
is added to the start-port value to determine the port \
to be used by the remote-side. Port-gap also defines the \
max number of links that can exist in the topology. EX. \
If start-port is 8000 and port-gap is 1000 the first link \
will use ports 8001 and 9001 for the construction of the \
UDP tunnel. If using this option with the virtualbox \
provider it will be ignored.')
parser.add_argument('-dd', '--display-datastructures', action='store_true',
help='When specified, the datastructures which are passed \
to the template are displayed to screen. Note: Using \
this option does not write a Vagrantfile and \
supercedes other options.')
parser.add_argument('--synced-folder', action='store_true',
help='Using this option enables the default Vagrant \
synced folder which we disable by default. \
See: https://www.vagrantup.com/docs/synced-folders/basic_usage.html')
parser.add_argument('--version', action='version', version="Topology \
Converter version is v%s" % version,
help='Using this option displays the version of Topology Converter')
parser.add_argument('--prefix', help='Specify a prefix to be used for machines in libvirt. By default the name of the current folder is used.')
args = parser.parse_args()
# Parse Arguments
network_functions = ['oob-switch', 'internet', 'exit', 'superspine', 'spine', 'leaf', 'tor']
function_group = {}
provider = "virtualbox"
generate_ansible_hostfile = False
create_mgmt_device = False
create_mgmt_network = False
create_mgmt_configs_only = False
verbose = 0
tunnel_ip = None
start_port = 8000
port_gap = 1000
synced_folder = False
display_datastructures = False
total_memory = 0
VAGRANTFILE = 'Vagrantfile'
VAGRANTFILE_template = relpath_to_me + '/templates/Vagrantfile.j2'
#mgmt_destination_dir = relpath_to_me + '/helper_scripts/auto_mgmt_network/'
customer = os.path.basename(os.path.dirname(os.getcwd()))
TEMPLATES = [[VAGRANTFILE_template, VAGRANTFILE]]
arg_string = " ".join(sys.argv)
libvirt_prefix = None
if args.topology_file: topology_file = args.topology_file
if args.verbose: verbose = args.verbose
if args.provider: provider = args.provider
if args.ansible_hostfile: generate_ansible_hostfile = True
if args.create_mgmt_device: create_mgmt_device = True
if args.create_mgmt_network:
create_mgmt_device = True
create_mgmt_network = True
if args.create_mgmt_configs_only: create_mgmt_configs_only = True
if args.template:
for templatefile, destination in args.template:
TEMPLATES.append([templatefile, destination])
for templatefile, destination in TEMPLATES:
if not os.path.isfile(templatefile):
print(styles.FAIL + styles.BOLD + " ### ERROR: provided template file-- \"" +
templatefile + "\" does not exist!" + styles.ENDC)
exit(1)
if args.tunnel_ip:
if provider == 'libvirt':
tunnel_ip = args.tunnel_ip
if tunnel_ip != 'random':
try:
ipaddress.ip_address(tunnel_ip)
except ValueError as e:
print(styles.FAIL + styles.BOLD + " ### ERROR: " + str(e) + "."
+ " Specify 'random' to use a random localhost IPv4 address."
+ styles.ENDC)
exit(1)
else:
print(styles.FAIL + styles.BOLD + " ### ERROR: tunnel IP was specified but " +
"provider is not libvirt." + styles.ENDC)
exit(1)
if args.start_port: start_port = args.start_port
if args.port_gap: port_gap = args.port_gap
if args.display_datastructures: display_datastructures = True
if args.synced_folder: synced_folder = True
if args.prefix != None: libvirt_prefix = args.prefix
if verbose > 2:
print("Arguments:")
print(args)
###################################
#### MAC Address Configuration ####
###################################
# The starting MAC for assignment for any devices not in mac_map
# Cumulus Range ( https://support.cumulusnetworks.com/hc/en-us/articles/203837076-Reserved-MAC-Address-Range-for-Use-with-Cumulus-Linux )
start_mac = "443839000000"
# This file is generated to store the mapping between macs and mgmt interfaces
dhcp_mac_file = "./dhcp_mac_map"
######################################################
############# Everything Else #################
######################################################
# Hardcoded Variables
script_storage = relpath_to_me+"/helper_scripts"
epoch_time = str(int(time.time()))
mac_map = {}
# Static Variables -- #Do not change!
warning = []
libvirt_reuse_error = """
When constructing a VAGRANTFILE for the libvirt provider
interface reuse is not possible because the UDP tunnels
which libvirt uses for communication are point-to-point in
nature. It is not possible to create a point-to-multipoint
UDP tunnel!
NOTE: Perhaps adding another switch to your topology would
allow you to avoid reusing interfaces here.
"""
###### Functions
def mac_fetch(hostname, interface):
global start_mac
global mac_map
global warning
global verbose
new_mac = ("%x" % (int(start_mac, 16) + 1)).lower()
while new_mac in mac_map:
warning.append(styles.WARNING + styles.BOLD +
" WARNING: MF MAC Address Collision -- tried to use " +
new_mac + " (on " + interface + ") but it was already in use." +
styles.ENDC)
start_mac = new_mac
new_mac = ("%x" % (int(start_mac, 16) + 1)).lower()
start_mac = new_mac
if verbose > 2:
print(" Fetched new MAC ADDRESS: \"%s\"" % new_mac)
return add_mac_colon(new_mac)
def add_mac_colon(mac_address):
global verbose
if verbose > 2:
print("MAC ADDRESS IS: \"%s\"" % mac_address)
return ':'.join(map(''.join, zip(*[iter(mac_address)] * 2)))
def get_random_localhost_ip():
subnet = ipaddress.IPv4Network("127.0.0.0/8")
bits = random.getrandbits(subnet.max_prefixlen - subnet.prefixlen)
addr = ipaddress.IPv4Address(subnet.network_address + bits)
return str(addr)
def lint_topo_file(topology_file):
with open(topology_file, "r") as topo_file:
line_list = topo_file.readlines()
count = 0
for line in line_list:
count += 1
# Try to encode into ascii
try:
line.encode('ascii', 'ignore')
except UnicodeDecodeError as e:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Line %s:\n %s\n --> \"%s\" \n \
Has hidden unicode characters in it which prevent it \
from being converted to ASCII cleanly. Try manually \
typing it instead of copying and pasting."
% (count, line, re.sub(r'[^\x00-\x7F]+', '?', line)) + styles.ENDC)
exit(1)
if line.count("\"") % 2 == 1:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Line %s: Has an odd \
number of quotation characters \
(\").\n %s\n" % (count, line) + styles.ENDC)
exit(1)
if line.count("'") % 2 == 1:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Line %s: Has an odd \
number of quotation characters \
(').\n %s\n" % (count, line) + styles.ENDC)
exit(1)
if line.count(":") == 2:
if " -- " not in line:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Line %s: Does not \
contain the following sequence \" -- \" \
to seperate the different ends of the link.\n %s\n"
% (count, line) + styles.ENDC)
exit(1)
def parse_topology(topology_file):
global provider
global verbose
global warning
global total_memory
global tunnel_ip
lint_topo_file(topology_file)
try:
topology = pydotplus.graphviz.graph_from_dot_file(topology_file)
except Exception as e:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Cannot parse the provided topology.dot \
file (%s)\n There is probably a syntax error \
of some kind, common causes include failing to \
close quotation marks and hidden characters from \
copy/pasting device names into the topology file."
% (topology_file) + styles.ENDC)
exit(1)
inventory = {}
# Generate a random localhost IP for libvirt tunnels (if needed)
if tunnel_ip == 'random':
tunnel_ip = get_random_localhost_ip()
try:
nodes = topology.get_node_list()
except Exception as e:
print(e)
print(styles.FAIL + styles.BOLD +
" ### ERROR: There is a syntax error in your topology file \
(%s). Read the error output above for any clues as to the source."
% (topology_file) + styles.ENDC)
exit(1)
try:
edges = topology.get_edge_list()
except Exception as e:
print(e)
print(styles.FAIL + styles.BOLD +
" ### ERROR: There is a syntax error in your topology file \
(%s). Read the error output above for any clues as to the source."
% (topology_file) + styles.ENDC)
exit(1)
# Add Nodes to inventory
for node in nodes:
node_name = node.get_name().replace('"', '')
if node_name.startswith(".") or node_name.startswith("-"):
print(styles.FAIL + styles.BOLD +
" ### ERROR: Node name cannot start with a hyphen or period. \
'%s' is not valid!\n" % (node_name) + styles.ENDC)
exit(1)
reg = re.compile('^[A-Za-z0-9\.-]+$')
if not reg.match(node_name):
print(styles.FAIL + styles.BOLD +
" ### ERROR: Node name for the \
VM should only contain letters, \
numbers, hyphens or dots. It cannot \
start with a hyphen or dot. \
'%s' is not valid!\n" % (node_name) + styles.ENDC)
exit(1)
# Try to encode into ascii
try:
node_name.encode('ascii', 'ignore')
except UnicodeDecodeError as e:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Node name \"%s\" --> \"%s\" \
has hidden unicode characters in it which \
prevent it from being converted to Ascii cleanly. \
Try manually typing it instead of copying and pasting."
% (node_name, re.sub(r'[^\x00-\x7F]+', ' ', node_name)) + styles.ENDC)
exit(1)
if node_name not in inventory:
inventory[node_name] = {}
inventory[node_name]['interfaces'] = {}
node_attr_list = node.get_attributes()
# Define Functional Defaults
if 'function' in node_attr_list:
value = node.get('function')
if value.startswith('"') or value.startswith("'"):
value = value[1:].lower()
if value.endswith('"') or value.endswith("'"):
value = value[:-1].lower()
if value == 'fake':
inventory[node_name]['os'] = "None"
inventory[node_name]['memory'] = "1"
if value == 'oob-server':
inventory[node_name]['os'] = "generic/ubuntu1804"
inventory[node_name]['memory'] = "1024"
if value == 'oob-switch':
inventory[node_name]['os'] = "CumulusCommunity/cumulus-vx"
inventory[node_name]['memory'] = "768"
inventory[node_name]['config'] = script_storage+"/oob_switch_config.sh"
elif value in network_functions:
inventory[node_name]['os'] = "CumulusCommunity/cumulus-vx"
inventory[node_name]['memory'] = "768"
inventory[node_name]['config'] = script_storage+"/extra_switch_config.sh"
elif value == 'host':
inventory[node_name]['os'] = "yk0/ubuntu-xenial"
inventory[node_name]['memory'] = "512"
inventory[node_name]['config'] = script_storage+"/extra_server_config.sh"
if provider == 'libvirt' and 'pxehost' in node_attr_list:
if node.get('pxehost').replace('"', '') == "True":
inventory[node_name]['os'] = "N/A (PXEBOOT)"
# Add attributes to node inventory
for attribute in node_attr_list:
if verbose > 2:
print(attribute + " = " + node.get(attribute))
value = node.get(attribute)
if value.startswith('"') or value.startswith("'"):
value = value[1:]
if value.endswith('"') or value.endswith("'"):
value = value[:-1]
inventory[node_name][attribute] = value
if (attribute == "config") and (not os.path.isfile(value)):
warning.append(styles.WARNING + styles.BOLD +
" WARNING: Node \"" + node_name + "\" \
Config file for device does not exist" + styles.ENDC)
if provider == 'libvirt':
if 'os' in inventory[node_name]:
if inventory[node_name]['os'] == 'boxcutter/ubuntu1604' or inventory[node_name]['os'] == 'bento/ubuntu-16.04' or inventory[node_name]['os'] == 'ubuntu/xenial64':
print(styles.FAIL + styles.BOLD + " ### ERROR: device " + node_name +
" -- Incompatible OS for libvirt provider.")
print(" Do not attempt to use a mutated image for Ubuntu16.04 on Libvirt")
print(" use an ubuntu1604 image which is natively built for libvirt")
print(" like generic/ubuntu18.04.")
print(" See https://github.com/CumulusNetworks/topology_converter/tree/master/documentation#vagrant-box-selection")
print(" See https://github.com/vagrant-libvirt/vagrant-libvirt/issues/607")
print(" See https://github.com/vagrant-libvirt/vagrant-libvirt/issues/609" + styles.ENDC)
exit(1)
# Make sure mandatory attributes are present.
mandatory_attributes = ['os', ]
for attribute in mandatory_attributes:
if attribute not in inventory[node_name]:
print(styles.FAIL + styles.BOLD +
" ### ERROR: MANDATORY DEVICE ATTRIBUTE \"" + attribute + "\" \
not specified for " + node_name + styles.ENDC)
exit(1)
# Extra Massaging for specific attributes.
# light sanity checking.
if 'function' not in inventory[node_name]:
inventory[node_name]['function'] = "Unknown"
if 'memory' in inventory[node_name]:
try:
if int(inventory[node_name]['memory']) <= 0:
print(styles.FAIL + styles.BOLD +
" ### ERROR -- Memory must be greater than 0mb on " +
node_name + styles.ENDC)
exit(1)
except:
print(styles.FAIL + styles.BOLD +
" ### ERROR -- There is something wrong with the memory definition on " +
node_name + styles.ENDC)
exit(1)
if provider == "libvirt":
if tunnel_ip != None: inventory[node_name]['tunnel_ip'] = tunnel_ip
elif 'tunnel_ip' not in inventory[node_name]:
inventory[node_name]['tunnel_ip'] = '127.0.0.1'
# Add All the Edges to Inventory
net_number = 1
for edge in edges:
# if provider == "virtualbox":
network_string = "net" + str(net_number)
# elif provider == "libvirt":
PortA = str(start_port + net_number)
PortB = str(start_port + port_gap + net_number)
# Set Devices/interfaces/MAC Addresses
left_device = edge.get_source().split(":")[0].replace('"', '')
left_interface = edge.get_source().split(":")[1].replace('"', '')
if "/" in left_interface:
new_left_interface = left_interface.replace('/', '-')
warning.append(styles.WARNING + styles.BOLD +
" WARNING: Device %s interface %s has bad \
characters altering to this %s."
% (left_device, left_interface, new_left_interface) +
styles.ENDC)
left_interface = new_left_interface
right_device = edge.get_destination().split(":")[0].replace('"', '')
right_interface = edge.get_destination().split(":")[1].replace('"', '')
if "/" in right_interface:
new_right_interface = right_interface.replace('/', '-')
warning.append(styles.WARNING + styles.BOLD +
" WARNING: Device %s interface %s has bad \
characters altering to this %s."
% (right_device, right_interface, new_right_interface) +
styles.ENDC)
right_interface = new_right_interface
for value in [left_device, left_interface, right_device, right_interface]:
# Try to encode into ascii
try:
value.encode('ascii', 'ignore')
except UnicodeDecodeError as e:
print(styles.FAIL + styles.BOLD +
" ### ERROR: in line --> \"%s\":\"%s\" -- \"%s\":\"%s\"\n \
Link component: \"%s\" has hidden unicode characters in it \
which prevent it from being converted to Ascii cleanly. \
Try manually typing it instead of copying and pasting."
% (left_device, left_interface, right_device, right_interface,
re.sub(r'[^\x00-\x7F]+', ' ', value)) + styles.ENDC)
exit(1)
left_mac_address = ""
if edge.get('left_mac') is not None:
temp_left_mac = edge.get('left_mac').replace('"', '').replace(':', '').lower()
left_mac_address = add_mac_colon(temp_left_mac)
else:
left_mac_address = mac_fetch(left_device, left_interface)
right_mac_address = ""
if edge.get('right_mac') is not None:
temp_right_mac = edge.get('right_mac').replace('"', '').replace(':', '').lower()
right_mac_address = add_mac_colon(temp_right_mac)
else:
right_mac_address = mac_fetch(right_device, right_interface)
# Check to make sure each device in the edge already exists in inventory
if left_device not in inventory:
print(styles.FAIL + styles.BOLD + " ### ERROR: device " +
left_device + " is referred to in list of edges/links \
but not defined as a node." + styles.ENDC)
exit(1)
if right_device not in inventory:
print(styles.FAIL + styles.BOLD +
" ### ERROR: device " + right_device + " is referred to \
in list of edges/links but not defined as a node." + styles.ENDC)
exit(1)
# Adds link to inventory datastructure
add_link(inventory,
left_device,
right_device,
left_interface,
right_interface,
left_mac_address,
right_mac_address,
net_number,)
# Handle Link-based Passthrough Attributes
edge_attributes = {}
for attribute in edge.get_attributes():
if attribute == "left_mac" or attribute == "right_mac":
continue
if attribute in edge_attributes:
warning.append(styles.WARNING + styles.BOLD +
" WARNING: Attribute \"" + attribute +
"\" specified twice. Using second value." + styles.ENDC)
value = edge.get(attribute)
if value.startswith('"') or value.startswith("'"):
value = value[1:]
if value.endswith('"') or value.endswith("'"):
value = value[:-1]
if attribute.startswith('left_'):
inventory[left_device]['interfaces'][left_interface][attribute[5:]] = value
elif attribute.startswith('right_'):
inventory[right_device]['interfaces'][right_interface][attribute[6:]] = value
else:
inventory[left_device]['interfaces'][left_interface][attribute] = value
inventory[right_device]['interfaces'][right_interface][attribute] = value
# edge_attributes[attribute]=value
net_number += 1
# Remove PXEbootinterface attribute from hosts which are not set to PXEboot=True
for device in inventory:
count = 0
for link in inventory[device]['interfaces']:
if 'pxebootinterface' in inventory[device]['interfaces'][link]:
count += 1 # increment count to make sure more than one interface doesn't try to set nicbootprio
if 'pxehost' not in inventory[device]:
del inventory[device]['interfaces'][link]['pxebootinterface']
elif 'pxehost' in inventory[device]:
if inventory[device]['pxehost'] != "True":
del inventory[device]['interfaces'][link]['pxebootinterface']
# Make sure no host has PXEbootinterface set more than once
# Have to make two passes here because doing it in one pass could have
# side effects.
for device in inventory:
count = 0
for link in inventory[device]['interfaces']:
if 'pxebootinterface' in inventory[device]['interfaces'][link]:
count += 1 # increment count to make sure more than one interface doesn't try to set nicbootprio
if count > 1:
print(styles.FAIL + styles.BOLD +
" ### ERROR -- Device " + device +
" sets pxebootinterface more than once." +
styles.ENDC)
exit(1)
#######################
# Add Mgmt Network Links
#######################
if create_mgmt_device:
mgmt_server = None
mgmt_switch = None
# Look for Managment Server/Switch
for device in inventory:
if inventory[device]["function"] == "oob-switch":
mgmt_switch = device
elif inventory[device]["function"] == "oob-server":
mgmt_server = device
if verbose > 2:
print(" detected mgmt_server: %s" % mgmt_server)
print(" mgmt_switch: %s" % mgmt_switch)
# Hardcode mgmt server parameters
if mgmt_server == None:
if "oob-mgmt-server" in inventory:
print(styles.FAIL + styles.BOLD + ' ### ERROR: oob-mgmt-server must be set to function = "oob-server"' + styles.ENDC)
exit(1)
inventory["oob-mgmt-server"] = {}
inventory["oob-mgmt-server"]["function"] = "oob-server"
intf = ipaddress.ip_interface(u'192.168.200.254/24')
inventory["oob-mgmt-server"]["interfaces"] = {}
mgmt_server = "oob-mgmt-server"
if provider == "libvirt":
if tunnel_ip != None: inventory["oob-mgmt-server"]['tunnel_ip'] = tunnel_ip
elif 'tunnel_ip' not in inventory["oob-mgmt-server"]:
inventory["oob-mgmt-server"]['tunnel_ip'] = '127.0.0.1'
inventory["oob-mgmt-server"]["mgmt_ip"] = ("%s" % intf.ip)
inventory["oob-mgmt-server"]["mgmt_network"] = ("%s" % intf.network[0])
inventory["oob-mgmt-server"]["mgmt_cidrmask"] = ("/%s" % intf.network.prefixlen)
inventory["oob-mgmt-server"]["mgmt_netmask"] = ("%s" % intf.netmask)
mgmt_server == "oob-mgmt-server"
else:
if "mgmt_ip" not in inventory[mgmt_server]:
intf = ipaddress.ip_interface(u'192.168.200.254/24')
else:
if "/" in inventory[mgmt_server]["mgmt_ip"]:
intf = ipaddress.ip_interface(inventory[mgmt_server]["mgmt_ip"])
else:
intf = ipaddress.ip_interface(inventory[mgmt_server]["mgmt_ip"] + "/24")
if provider == "libvirt":
if tunnel_ip != None: inventory[mgmt_server]['tunnel_ip'] = tunnel_ip
elif 'tunnel_ip' not in inventory[mgmt_server]:
inventory[mgmt_server]['tunnel_ip'] = '127.0.0.1'
inventory[mgmt_server]["mgmt_ip"] = ("%s" % intf.ip)
inventory[mgmt_server]["mgmt_network"] = ("%s" % intf.network[0])
inventory[mgmt_server]["mgmt_cidrmask"] = ("/%s" % intf.network.prefixlen)
inventory[mgmt_server]["mgmt_netmask"] = ("%s" % intf.netmask)
try:
inventory[mgmt_server]["mgmt_dhcp_start"] = ("%s" % intf.network[10])
inventory[mgmt_server]["mgmt_dhcp_stop"] = ("%s" % intf.network[50])
except IndexError:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Prefix Length on the Out Of Band Server \
is not big enough to support usage of the 10th-50th \
IP addresses being used for DHCP")
exit(1)
inventory[mgmt_server]["os"] = "generic/ubuntu1804"
if provider == "libvirt":
inventory[mgmt_server]["os"] = "generic/ubuntu1804"
if "memory" not in inventory[mgmt_server]:
inventory[mgmt_server]["memory"] = "512"
if "config" in inventory[mgmt_server]:
print(styles.FAIL + styles.BOLD + '''
### WARNING: You have requested automatic creation of out-of-band
management network. This includes preparing the out-of-band
management server which is done by one of the helper scripts.
However, you have manually set the configuration script for the
out-of-band management server (which overrides ours). This might
result in issues if you are relying on the OOB server in your
topology. If you want all the nice things topology_converter has
for you on the OOB server then you might want to remove the
script for the device with function="oob-mgmt-server" in the
topology.dot file.
Refer to OOB_Server_Config_auto_mgmt.sh script in helper scripts
folder to see how we set up the OOB server for you..''' + styles.ENDC)
else:
inventory[mgmt_server]["config"] = "./helper_scripts/auto_mgmt_network/OOB_Server_Config_auto_mgmt.sh"
# Hardcode mgmt switch parameters
if mgmt_switch is None and create_mgmt_network:
if "oob-mgmt-switch" in inventory:
print(styles.FAIL + styles.BOLD + ' ### ERROR: oob-mgmt-switch must be set to function = "oob-switch"' + styles.ENDC)
exit(1)
inventory["oob-mgmt-switch"] = {}
inventory["oob-mgmt-switch"]["function"] = "oob-switch"
inventory["oob-mgmt-switch"]["interfaces"] = {}
if provider == "libvirt":
if tunnel_ip != None: inventory["oob-mgmt-switch"]['tunnel_ip'] = tunnel_ip
elif 'tunnel_ip' not in inventory["oob-mgmt-switch"]:
inventory["oob-mgmt-switch"]['tunnel_ip'] = '127.0.0.1'
mgmt_switch = "oob-mgmt-switch"
if create_mgmt_network:
inventory[mgmt_switch]["os"] = "CumulusCommunity/cumulus-vx"
inventory[mgmt_switch]["memory"] = "512"
inventory[mgmt_switch]["config"] = script_storage+"/oob_switch_config.sh"
# Add Link between oob-mgmt-switch oob-mgmt-server
net_number += 1
left_mac = mac_fetch(mgmt_switch, "swp1")
right_mac = mac_fetch(mgmt_server, "eth1")
if verbose > 1:
print(" adding mgmt links:")
if provider == "virtualbox":
print(" %s:%s (mac: %s) --> %s:%s (mac: %s) network_string:%s"
% (mgmt_switch, "swp1", left_mac, mgmt_server, "eth1", right_mac, network_string))
elif provider == "libvirt":
print(" %s:%s udp_port %s (mac: %s) --> %s:%s udp_port %s (mac: %s)"
% (mgmt_switch, "swp1", left_mac, PortA, mgmt_server, "eth1", PortB, right_mac))
add_link(inventory,
mgmt_switch,
mgmt_server,
"swp1",
"eth1",
left_mac,
right_mac,
net_number)
mgmt_switch_swp = 1
# Add Eth0 MGMT Link for every device that is is not oob-switch or oob-server
for device in inventory:
if inventory[device]["function"] == "oob-server" or inventory[device]["function"] == "oob-switch":
continue
elif inventory[device]["function"] in network_functions:
if "config" not in inventory[device]:
inventory[device]["config"] = script_storage+"/extra_switch_config.sh"
mgmt_switch_swp += 1
net_number += 1
if int(PortA) > int(start_port + port_gap) and provider == "libvirt":
print(styles.FAIL + styles.BOLD +
" ### ERROR: Configured Port_Gap: (" + str(port_gap) + ") exceeds \
the number of links in the topology. Read the help options to fix.\n\n" +
styles.ENDC)
parser.print_help()
exit(1)
mgmt_switch_swp_val = "swp" + str(mgmt_switch_swp)
left_mac = mac_fetch(mgmt_switch, mgmt_switch_swp_val)
right_mac = mac_fetch(device, "eth0")
half1_exists = False
half2_exists = False
# Check to see if components of the link already exist
if "eth0" in inventory[device]['interfaces']:
if inventory[device]['interfaces']['eth0']['remote_interface'] != mgmt_switch_swp_val:
print(styles.FAIL + styles.BOLD +
" ### ERROR: %s:eth0 interface already exists but \
not connected to %s:%s" % (device, mgmt_switch, mgmt_switch_swp_val) +
styles.ENDC)
exit(1)
if inventory[device]['interfaces']['eth0']['remote_device'] != mgmt_switch:
print(styles.FAIL + styles.BOLD +
" ### ERROR: %s:eth0 interface already exists but \
not connected to %s:%s" % (device, mgmt_switch, mgmt_switch_swp_val) +
styles.ENDC)
exit(1)
if verbose > 2:
print(" mgmt link on %s already exists and is good." % (mgmt_switch))
half1_exists = True
if mgmt_switch_swp_val in inventory[mgmt_switch]['interfaces']:
if inventory[mgmt_switch]['interfaces'][mgmt_switch_swp_val]['remote_interface'] != "eth0":
print(styles.FAIL + styles.BOLD +
" ### ERROR: %s:%s-- link already exists but \
not connected to %s:eth0" % (mgmt_switch, mgmt_switch_swp_val, device) +
styles.ENDC)
exit(1)
if inventory[mgmt_switch]['interfaces'][mgmt_switch_swp_val]['remote_device'] != device:
print(styles.FAIL + styles.BOLD +
" ### ERROR: %s:%s-- link already exists but \
not connected to %s:eth0" % (mgmt_switch, mgmt_switch_swp_val, device) +
styles.ENDC)
exit(1)
if verbose > 2:
print(" mgmt link on %s already exists and is good." % (mgmt_switch))
half2_exists = True
if not half1_exists and not half2_exists:
# Display add message
if verbose > 1:
if provider == "virtualbox":
print(" %s:%s (mac: %s) --> %s:%s (mac: %s) network_string:net%s"
% (mgmt_switch, mgmt_switch_swp_val, left_mac, device, "eth0", right_mac, net_number))
elif provider == "libvirt":
print(" %s:%s udp_port %s (mac: %s) --> %s:%s udp_port %s (mac: %s)"
% (mgmt_switch, mgmt_switch_swp_val, PortA, left_mac, device, "eth0", PortB, right_mac))
add_link(inventory,
mgmt_switch,
device,
mgmt_switch_swp_val,
"eth0",
left_mac,
right_mac,
net_number,)
# Determine Used MGMT IPs
if verbose > 1:
print(" MGMT_IP ADDRESS for OOB_SERVER IS: %s%s"
% (inventory[mgmt_server]["mgmt_ip"], inventory[mgmt_server]["mgmt_cidrmask"]))
intf = ipaddress.ip_interface("%s%s" % (inventory[mgmt_server]["mgmt_ip"],
inventory[mgmt_server]["mgmt_cidrmask"]))
network = ipaddress.ip_network("%s" % (intf.network))
acceptable_host_addresses = list(intf.network.hosts())
for device in inventory:
if 'mgmt_ip' in inventory[device]:
node_mgmt_ip = ipaddress.ip_address(inventory[device]['mgmt_ip'])
# Check that Defined Mgmt_IP is in same Subnet as OOB-SERVER
if node_mgmt_ip not in network:
print(styles.FAIL + styles.BOLD +
" ### ERROR: IP address (%s) is not in the \
Management Server subnet %s" % (node_mgmt_ip, network))
exit(1)
# Remove Address from Valid Assignable Address Pool
try:
acceptable_host_addresses.remove(node_mgmt_ip)
if verbose > 2:
print(" INFO: Removing MGMT_IP Address %s from Assignable Pool. \
Address already assigned to %s" % (node_mgmt_ip, device))
except:
print(styles.FAIL + styles.BOLD +
" ### ERROR: Cannot mark the mgmt_ip (%s) as used." % (node_mgmt_ip))
exit(1)
# Add Mgmt_IP if not configured
for device in inventory:
if 'mgmt_ip' not in inventory[device]:
new_mgmt_ip = acceptable_host_addresses.pop(0)
inventory[device]['mgmt_ip'] = "%s" % (new_mgmt_ip)
if verbose > 1:
print(" Device: \"%s\" was assigned mgmt_ip %s" % (device, new_mgmt_ip))
# Add Dummy Eth0 Link
for device in inventory:
if inventory[device]["function"] not in network_functions:
continue
if 'vagrant' in inventory[device]:
if inventory[device]['vagrant'] == 'eth0':
continue
# Check to see if components of the link already exist
if "eth0" not in inventory[device]['interfaces']:
net_number += 1
add_link(inventory,
device,
"NOTHING",
"eth0",
"NOTHING",
mac_fetch(device, "eth0"),
"NOTHING",
net_number,)
# Add Extra Port Ranges (if needed)
for device in inventory:
# Tally up the minimum memory usage (if specified)
if 'memory' in inventory[device]: total_memory += int(inventory[device]['memory'])
if "ports" in inventory[device] and inventory[device]["function"] in network_functions:
if provider != "libvirt":
warning.append(styles.WARNING + styles.BOLD +
" WARNING: 'ports' setting on node %s will be ignored \
when not using the libvirt hypervisor." % (device) +
styles.ENDC)
port_range = int(inventory[device]["ports"])
existing_port_list = []
ports_to_create = []
only_nums = re.compile(r'[^\d]+')
for port in inventory[device]['interfaces']:
existing_port_list.append(int(only_nums.sub('', port)))
print(existing_port_list)