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#!/usr/bin/python
import libvirt
import os
import IPy
# bridge_name
# forward -> nat/ route
# forward-dev
# network
# => deduire la gateway , et le range
# en dhcp automatiquement
# tftp_root
# enable_pxelinux
bridge_name = os.environ.get('BRIDGE_NAME', 'virbr0')
forward = os.environ.get('FORWARD', 'nat')
forward_dev = os.environ.get('FORWARD_DEV', 'eth0')
network = os.environ.get('NETWORK', '192.168.122.0/24')
tftp_root = os.environ.get('TFTP_ROOT', '')
disable_pxelinux = os.environ.get('DISABLE_PXE', False)
name = os.environ.get('NAME', 'default')
ip = IPy.IP(network)
gateway = ip[1]
dhcp_start = ip[2]
dhcp_end = ip[-2]
netmask = ip.netmask()
tftp_xml = ''
pxe_xml = ''
if tftp_root:
tftp_xml = "<tftp root='" + tftp_root + "' />"
if not disable_pxelinux:
pxe_xml = "<bootp file='pxelinux.0' />"
network_xml = """
<network>
<name>%(name)s</name>
<bridge name="%(bridge_name)s" />
<forward mode="%(forward)s" dev="%(forward_dev)s"/>
<ip address="%(gateway)s" netmask="%(netmask)s">
%(tftp_xml)s
<dhcp>
<range start="%(dhcp_start)s" end="%(dhcp_end)s" />
%(pxe_xml)s
</dhcp>
</ip>
</network>""" % globals()
c=libvirt.open("qemu:///system")
c.networkDefineXML(network_xml)
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