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#!/usr/bin/env python import os,sys,time,re,shutil
import socket
import fcntl
import struct
import traceback
import commands
#Get interface name interface_path = '/etc/sysconfig/network-scripts/'
def LOG(info):
""" Log files ...."""
logfile = '/root/pxe_install.log'
files = open (logfile, 'a' )
try :
files.write( '%s : %s \n' % (time.ctime(),info))
except IOError:
files.close()
files.close()
def get_interface ():
os.chdir(interface_path)
eth = em = list ()
for inter in os.listdir(interface_path):
if inter[ 0 : - 1 ] = = 'ifcfg-em' :
if inter = = 'ifcfg-em1' or inter = = 'ifcfg-em2' :
em.append(inter)
elif inter[ 0 : - 1 ] = = 'ifcfg-eth' :
if inter = = 'ifcfg-eth0' or inter = = 'ifcfg-eth1' :
eth.append(inter)
if eth:
LOG( "Getting interface file name %s is Ok" % eth)
return eth
else :
LOG( "Getting interface file name %s is Ok" % em)
return em
def main():
net_name = get_interface()
ipaddr = str ()
for inter in net_name:
try :
shutil.move(inter, '/opt/' + inter + '.bak' )
_interface_config(inter)
new_interface = inter.split( '-' )[ - 1 ]
if _configure_bond(new_interface):
_configure_bond(new_interface)
LOG( "bond script init is Ok" )
except Exception,e:
LOG(traceback.format_exc())
if _interface_modprobe():
_interface_modprobe()
if _rester_network():
_rester_network()
# Set interface eth* or em* def _interface_config(interface):
"""
DEVICE=eth0
BOOTPROTO=static
NOBOOT=yes
NM_CONTROLLED=no
MASTER=bond0
SLAVE=yes
"""
fp = open (interface, 'w' )
new_interface = interface.split( '-' )[ - 1 ]
if interface = = 'ifcfg-em1' :
fp.write( 'DEVICE=%s \n' % new_interface)
fp.write( 'BOOTPROTO=static \n' )
fp.write( 'ONBOOT=yes \n' )
fp.write( 'NM_CONTROLLED=no \n' )
fp.write( 'MASTER=bond0 \n' )
fp.write( 'SLAVE=yes \n' )
elif interface = = 'ifcfg-em2' :
fp.write( 'DEVICE=%s \n' % new_interface)
fp.write( 'BOOTPROTO=static \n' )
fp.write( 'ONBOOT=yes \n' )
fp.write( 'NM_CONTROLLED=no \n' )
fp.write( 'MASTER=bond0 \n' )
fp.write( 'SLAVE=yes \n' )
elif interface = = 'ifcfg-eth0' :
fp.write( 'DEVICE=%s \n' % new_interface)
fp.write( 'BOOTPROTO=static \n' )
fp.write( 'ONBOOT=yes \n' )
fp.write( 'NM_CONTROLLED=no \n' )
fp.write( 'MASTER=bond0 \n' )
fp.write( 'SLAVE=yes \n' )
elif interface = = 'ifcfg-eth1' :
fp.write( 'DEVICE=%s \n' % new_interface)
fp.write( 'BOOTPROTO=static \n' )
fp.write( 'ONBOOT=yes \n' )
fp.write( 'NM_CONTROLLED=no \n' )
fp.write( 'MASTER=bond0 \n' )
fp.write( 'SLAVE=yes \n' )
fp.close()
def _configure_bond(inter):
"""
DEVICE=bond0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.0.100
NETMASK=255.255.255.0
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
"""
#bond name message
if inter = = 'eth0' :
bond_name = 'ifcfg-bond0'
elif inter = = 'em1' :
bond_name = 'ifcfg-bond0'
elif inter = = 'eth1' :
bond_name = 'ifcfg-bond0'
elif inter = = 'em2' :
bond_name = 'ifcfg-bond0'
# ip address message
if _interface_get_ip(inter):
ipaddr = _interface_get_ip(inter)
else :
ipaddr = '0.0.0.0'
# ip net mask info
try :
net_mk = os.popen( 'ip a |grep %s|grep inet' % inter).readlines()[ 0 ]
res = net_mk.split()[ 1 ]
net_masklen = res.split( '/' )[ - 1 ]
except :
net_masklen = 18
net_mask = _interface_sum_master(net_masklen)
# default gateway is ....
try :
net_gate = os.popen( 'ip route |grep default' ).readlines()[ 0 ]
net_gateway = net_gate = net_gate.split( ' ' )[ 2 ]
except :
net_gateway = '0.0.0.0'
try :
if ipaddr = = '0.0.0.0' :
return ''
fp = open (bond_name, 'w' )
bond = bond_name.split( '-' )[ - 1 ]
fp.write( "DEVICE=%s \n" % bond)
fp.write( "BOOTPROTO=static \n" )
fp.write( "ONBOOT=yes \n" )
fp.write( "IPADDR=%s \n" % ipaddr)
fp.write( "NETMASK=%s \n" % net_mask)
if bond = = 'bond0' :
fp.write( "GATEWAY=%s \n" % net_gateway)
fp.write( "DNS1=202.106.0.20 \n" )
fp.write( "DNS2=8.8.8.8 \n" )
LOG( "ifcfg-bond* configure is Ok" )
return True
except Exception,e:
return False
def _interface_get_ip(inter):
try :
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
IP = socket.inet_ntoa(fcntl.ioctl(
s.fileno(),
0x8915 , # SIOCGIFADDR
struct.pack( '24s' ,inter))[ 20 : 24 ])
return IP
except Exception,e:
pass
return
# Add modprobe bonding model def _interface_modprobe():
try :
fp = open ( '/etc/modprobe.d/bonding.conf' , 'w' )
fp.write( "#Module options and blacklists written by bonding \n" )
fp.write( "alias bond0 bonding \n" )
fp.write( "options bond0 miimon=100 mode=1 \n" )
fp.close()
x,y = commands.getstatusoutput( 'modprobe bonding' )
if x ! = 0 :
LOG( "modprobe bonding is failed" )
return True
except :
LOG(traceback.format_exc())
return
# Restart Network def _rester_network():
x,y = commands.getstatusoutput( 'service network restart' )
if x = = 0 :
LOG( "restart netowrk is Ok " )
return True
else :
LOG( "restart netowrk is Faild " )
return
# According to the CIDR calculation.net master def _interface_sum_master(net_master):
mask = ( 2 * * 8 ) - 2 * * ( 24 - int (net_master))
return '255.255.%s.0' % mask
if __name__ = = "__main__" :
sc = main()
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本文转自 swq499809608 51CTO博客,原文链接:http://blog.51cto.com/swq499809608/1557187