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##############################################################################
# Copyright (c) 2015 Todd Gaunt and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import yaml
import netifaces
import subprocess
import copy
import re
import os
import logging
from pharosvalidator.specification import *
from pharosvalidator import util
init_cmd = ["systemctl", "start", "dhcpd.service"]
def gen_dhcpd_file(dhcpdfile, nodes, network):
"""Generates and associates incremental ip addresses to
MAC addresses according to restrictions placed by network
configuration file. Writes all of this out in dhcpd.conf format"""
logger = logging.getLogger(__name__)
logger.info("Generating dhcpfile...")
header = "default-lease-time 86400;\n\
max-lease-time 604800;\n\
max-lease-time 604800;\n\
\n\
allow booting;\n\
authoritative;\n\
\n"
# Skip this network if it is disabled
if network.enabled == False:
logger.info("Admin network is disabled, please change the configuration to \"enabled\" if you would like this test to run")
quit()
# Not explicitly in the cofiguration file
broadcastaddr = "0.0.0.0"
next_server = "0.0.0.0"
ip_range = util.gen_ip_range(network.cidr, [network.installer_ip], network.usable_ip_range.minimum, \
network.usable_ip_range.maximum)
tab = ' '
subnetconf = "subnet {} netmask {} {{\n".format(network.subnet, network.netmask)\
+ tab+"range {} {};\n".format(network.usable_ip_range.minimum, network.usable_ip_range.maximum)\
+ tab+"option broadcast-address {};\n".format(broadcastaddr)\
+ tab+'filename "pxelinux.0";\n'\
+ tab+"next-server {};\n".format(next_server)
# For now no static addresses are assigned
"""
static_addrs = []
for node in nodes:
# Skip the node if it doesn't have a name or mac address specified
if not node.name or not node.mac_address:
continue
if node.ipmi_addr in ip_range:
ip_range.remove(node.ipmi_addr)
static_line = "host {node} {{ hardware ethernet {ipmi_mac}; fixed-address {ip_addr}; }}\n".format\
(node=node.name, ipmi_mac=node.mac_address, ip_addr=ip_range[0])
ip_range = ip_range[1::] # Remove the assigned ip address
static_addrs.append(static_line)
# Now add all statically assigned ip addresses
for addr in static_addrs:
subnetconf += tab+addr
"""
subnetconf += "}\n" # Just the closing bracket
# The final text to be written out to a file
dhcpdtext = header + subnetconf
with open(dhcpdfile, "w+") as fd:
logger.info("Writing out dhcpd file to {}".format(dhcpdfile))
fd.write(dhcpdtext)
return dhcpdtext
def start_server():
logger = logging.getLogger(__name__)
global init_cmd
cmd = init_cmd
with open(os.devnull, 'w') as fn:
status = subprocess.Popen(cmd, stdout=fn, stderr=fn).wait()
if int(status) != 0:
logger.error("Could not bring up dhcpd server")
else:
logger.info("Dhcp server brought up")
return status
if __name__ == "__main__":
split("inventory.yaml", "eth0")
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