shell实现centos7双网卡修改网卡名eth0,eth1,并设置网络

时间：2021-09-20 17:19:29
#!/bin/bash

interface1=`ls /sys/class/net|grep en|awk 'NR==1{print}'`

interface2=`ls /sys/class/net|grep en|awk 'NR==2{print}'`

interface_file1="/etc/sysconfig/network-scripts/ifcfg-$interface1"

interface_file2="/etc/sysconfig/network-scripts/ifcfg-$interface2"

echo $interface_file1

echo $interface_file2

while getopts "i:g:n:I:G:N:" opt; do

    case $opt in

        i)

            ip1=$OPTARG

            ;;

        g)

            gateway1=$OPTARG

            ;;

        n)

            netmask1=$OPTARG

            ;;

        I)

            ip2=$OPTARG

            ;;

        G)

            gateway2=$OPTARG

            ;;

        N)

            netmask2=$OPTARG

            ;;

        \?)

            ;;

    esac

done

#判断grub文件是否修改net.ifname信息

new_grub=`cat /etc/default/grub|grep -c "net.ifnames"`

if [ $new_grub -eq 0 ];then

     sed -i '1,$s/quiet/quiet net.ifnames=0 biosdevname=0/g' /etc/default/grub

fi

grub2-mkconfig -o /boot/grub2/grub.cfg

mv $interface_file1 /etc/sysconfig/network-scripts/ifcfg-eth0

mv $interface_file2 /etc/sysconfig/network-scripts/ifcfg-eth1

cat >/etc/sysconfig/network-scripts/ifcfg-eth0 <<EOF

TYPE=Ethernet

BOOTPROTO=static

NAME=eth0

DEVICE=eth0

ONBOOT=yes

IPADDR=$ip1

GATEWAY=$gateway1

NETMASK=$netmask1

DNS1=114.114.114.114

EOF

cat >/etc/sysconfig/network-scripts/ifcfg-eth1 <<EOF

TYPE=Ethernet

BOOTPROTO=static

NAME=eth1

DEVICE=eth1

ONBOOT=yes

IPADDR=$ip2

GATEWAY=$gateway2

NETMASK=$netmask2

DNS1=114.114.114.114

EOF

reboot

　　执行格式 ： networksetting.sh -i 192.168.*.* -g 192.168.*.1 -n 255.255.255.0 -I 192.168.*.* -G 192.168.*.1 -N 255.255.255.0

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