设置固定ip

创建shell文件

vim setip.sh

脚本

#!/bin/bash

echo "正在设置固定ip地址..."

# 获取当前ip
ip=$(ip addr | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}')
#如需要指定ip,打开下面注释,并注释上面获取ip的shell
#ip=192.168.10.111
echo "1、当前ip为:$ip"

#截取网卡设备名
enp=$( ls /etc/sysconfig/network-scripts/|egrep ifcfg |grep en.*|awk -F"-" '{print $2}')
echo "2、当前网卡设备名为:$enp"

#网卡路径
enpWay=/etc/sysconfig/network-scripts/ifcfg-$enp
echo "3、当前网卡路径为:$enpWay"

#截取路由
rt=$(netstat -rn|head -3|tail -1|awk -F" " '{print $2}')
echo "4、当前路由为:$rt"
echo "5、修改配置文件"

# 备份
cp /etc/sysconfig/network-scripts/ifcfg-$enp /etc/sysconfig/network-scripts/ifcfg-$enp.bak
uuid=`cat /etc/sysconfig/network-scripts/ifcfg-$enp.bak | awk -F"=" '/UUID/{print $2}' `

#修改配置文件
cat >/etc/sysconfig/network-scripts/ifcfg-$enp <<-EOF

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
IPADDR=$ip
GATEWAY=$rt
NETMASK=255.255.255.0
DNS1=8.8.8.8
DNS2=8.8.4.4
EFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=$enp
UUID=$uuid
DEVICE=$enp
ONBOOT=yes
EOF

echo "设置固定ip成功,固定ip为:"+$ip
echo "重启网卡..."

#重启网卡
systemctl restart network

echo "重启网卡成功"

设置shell执行权限

chmod +x setip.sh

执行

./setip.sh