centos7.6批量增加修改删除虚拟网卡操作介绍

1 确认内核是否有tun模块

modinfo tun</pre>

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modprobe tun

lsmod | grep tun

2 安装tunctl软件

yum install tunctl -y</pre>

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vim /etc/yum.repos.d/nux-misc.repo</pre>

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[nux-misc]

name=Nux Misc

baseurl=http://li.nux.ro/download/nux/misc/el7/x86_64/

enabled=0

gpgcheck=1

gpgkey=http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro  

yum –enablerepo=nux-misc install tunctl软件名称：tunctl-1.5-12.el7.nux.x86_64

3 添加多个ip并绑定到网卡  

cd /etc/sysconfig/network-scripts

cp ifcfg-lo ifcfg-lo:1

vim ifcfg-lo:1 DEVICE=lo:1 

ONBOOT=yes 

BOOTPROTO=static 

IPADDR=新增IP 

NETMASK=子网掩码 

GATEWAY=网关地址 

systemctl restart network4 批量添加虚拟网卡

tunctl -t tap0 -u root  tap0 是虚拟网卡名字

ifconfig tap0 172.168.1.1 netmask 255.255.255.0 promisc172.168.1.1 是ip地址

ip tuntap add tap1 mode tun</pre>

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tunctl -t tap0 -u root                     

ifconfig tap0 172.168.1.1 netmask 255.255.255.0 promisc

ip tuntap add tap1 mode tap

ifconfig tap1 10.0.0.1/16

ip tuntap add tap2 mode tap

ifconfig tap2 10.0.0.1/17

ip tuntap add tap3 mode tap

ifconfig tap3 10.0.0.1/18

ip tuntap add tap4 mode tap

ifconfig tap4 10.0.0.1/19

ip tuntap add tap5 mode tap

ifconfig tap5 10.0.0.1/20

ip tuntap add tap6 mode tap

ifconfig tap6 10.0.0.1/21

ip tuntap add tap7 mode tap

ifconfig tap7 10.0.0.1/22

ip tuntap add tap8 mode tap

ifconfig tap8 10.0.0.1/23

ip tuntap add tap9 mode tap

ifconfig tap9 10.0.0.1/24sh addVirnet.sh 

#!/bin/bash

#

i=0

n=0

while [ $n -le 10 ];do

i=$(( $i + $n ))

n=$(( $n + 1 ))

ip tuntap add tap$n mode tap

done

echo $i 5 批量修改虚拟网卡

ifconfig tap0 192.168.130.17  netmask 255.255.255.0 promisc

ifconfig tap1 192.168.130.18  netmask 255.255.255.0 promisc

ifconfig tap2 192.168.130.19  netmask 255.255.255.0 promisc

ifconfig tap3 192.168.130.20  netmask 255.255.255.0 promisc

ifconfig tap4 192.168.130.21  netmask 255.255.255.0 promisc

ifconfig tap5 192.168.130.23  netmask 255.255.255.0 promisc

ifconfig tap6 192.168.130.24  netmask 255.255.255.0 promisc

ifconfig tap7 192.168.130.25  netmask 255.255.255.0 promisc

ifconfig tap8 192.168.130.28  netmask 255.255.255.0 promisc

ifconfig tap9 192.168.130.30  netmask 255.255.255.0 promisc

6 批量删除虚拟网卡

tunctl -d tap0

tunctl -d tap1

tunctl -d tap2

tunctl -d tap3

tunctl -d tap4

tunctl -d tap5

tunctl -d tap6

tunctl -d tap7

tunctl -d tap8

tunctl -d tap9sh deleteVirnet.sh

#!/bin/bash

#

i=0

n=0

while [ $n -le 10 ];do

i=$(( $i + $n ))

n=$(( $n + 1 ))

tunctl -d tap$n

done

echo $i 其他命令

tunctl

brctl show

brctl addbr br-zhai

brctl addif br-zhai tap0

brctl addif br-zhai tap1

ifconfig -a

brctl show

ifconfig br-zhai 192.168.9.1 up

ifconfig br-zhai

ifconfig -a

brctl show

brctl showmacs br-zhai

ifconfig tap0 promisc

ifconfig开启自动启动虚拟网卡脚本 

vim /etc/init.d/config_tap </pre>

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  #!/bin/bash

  #

  # config_tap          Start up the tun/tap virtual nic

  #

  # chkconfig: 2345 55 25

  USER=”root”

  TAP_NEТWORK=”192.168.130.10″

  TAP_DEV_NUM=0

  DESC=”TAP config”

  do_start() {

    if [ ! -x /usr/sbin/tunctl ]; then

      echo “/usr/sbin/tunctl was NOT found!”

      exit 1

    fi

    tunctl -t tap$TAP_DEV_NUM -u root

    ifconfig tap$TAP_DEV_NUM ${TAP_NEТWORK}  netmask 255.255.255.0 promisc

    ifconfig tap$TAP_DEV_NUM

  }

  do_stop() {

    ifconfig tap$TAP_DEV_NUM down

  }

  do_restart() {

    do_stop

    do_start

  }

  check_status() {

    ifconfig tap$TAP_DEV_NUM

  }

  case $1 in

    start)    do_start;;

    stop)     do_stop;;

    restart)  do_restart;;

    status)

              echo “Status of $DESC: ”

              check_status

              exit “$?”

              ;;

    *)

      echo “Usage: $0 {start|stop|restart|status}”

      exit 1

  esac

n=0

while [ $n -le 8 ];do

n=$(( $n + 1 ))

ip tuntap add tap$n mode tap

done

echo $i

ifconfig tap0 192.168.1.110  netmask 255.255.255.0 promisc

ifconfig tap1 192.168.1.111  netmask 255.255.255.0 promisc

ifconfig tap2 192.168.1.112  netmask 255.255.255.0 promisc

ifconfig tap3 192.168.1.113  netmask 255.255.255.0 promisc

ifconfig tap4 192.168.1.114  netmask 255.255.255.0 promisc

ifconfig tap5 192.168.1.115  netmask 255.255.255.0 promisc

ifconfig tap6 192.168.1.116  netmask 255.255.255.0 promisc

ifconfig tap7 192.168.1.117  netmask 255.255.255.0 promisc

ifconfig tap8 192.168.1.118  netmask 255.255.255.0 promisc

ifconfig tap9 192.168.1.119  netmask 255.255.255.0 promisc </pre>

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chkconfig –add config_tap

chkconfig –level 345 config_tap on

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