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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()
|
本文转自 swq499809608 51CTO博客,原文链接:http://blog.51cto.com/swq499809608/1557187