环境说明:
RHEL7主机有四块网卡,名为eth0/eth1/eth2/eth3。
需求:为四块网卡配置IP地址。
以下是Python脚本,直接在主机运行脚本即可配置,避免人肉繁杂的配置步骤。
正文:
import sys
import re
def configip(fname,ip_addr,if_ind):
content = ”’TYPE=Ethernet
BOOTPROTO=none
NAME=eth%s
DEVICE=eth%s
ONBOOT=yes
IPADDR=%s
PREFIX=24
”’ % (if_ind,if_ind,ip_addr)
with open(fname,’w’) as fobj:
fobj.write(content)
def check_ip(ip_addr):
m = re.match(r'(\d{1,3}\.){3}\d{1,3}$’,ip_addr)
if not m:
return False
return True
def show_menu():
prompt = ”’Configure IP Address:
(0)eth0
(1)eth1
(2)eth2
(3)eth3
you choice(0/1/2/3):”’
try:
if_ind = input(prompt).strip()[0]
except:
print(‘Invalid input’)
sys.exit(1)
if if_ind not in ‘0123’:
print(‘Wrong Selection. Use 0/1/2/3’)
sys.exit(2)
fname = ‘/etc/sysconfig/network-scripts/ifcfg-eth%s’ % if_ind
ip_addr = input(‘ip address:’).strip()
result = check_ip(ip_addr)
if not result:
print(‘Invalid ip address’)
sys.exit(3)
configip(fname,ip_addr,if_ind)
print(‘\033[32;1mConfigure ip address done. Please execute “systemctl restart NetworkManager”\033[0m’)
if __name__ == ‘__main__’:
show_menu()