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centos7.6批量增加修改刪除虛擬網卡操作介紹_Linux

作者：藍眼淚007 ? 更新時間： 2021-12-06 編程語言

1 確認內核是否有tun模塊

modinfo tun
modprobe tun
lsmod | grep tun

2 安裝tunctl軟件

yum install tunctl -y
vim /etc/yum.repos.d/nux-misc.repo
[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

軟件名稱：tunctl-1.5-12.el7.nux.x86_64

3 添加多個ip并綁定到網卡 ?

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=子網掩碼?
GATEWAY=網關地址?

systemctl restart network

4 批量添加虛擬網卡

tunctl -t tap0 -u root

tap0 是虛擬網卡名字

ifconfig tap0 172.168.1.1 netmask 255.255.255.0 promisc

172.168.1.1 是ip地址

ip tuntap add tap1 mode tun
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 10.0.0.1/24

sh 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 批量修改虛擬網卡

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 批量刪除虛擬網卡

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 tap9

sh 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

開啟自動啟動虛擬網卡腳本?

vim /etc/init.d/config_tap 
  #!/bin/bash
  #
  # config_tap          Start up the tun/tap virtual nic
  #
  # chkconfig: 2345 55 25
  USER="root"
  TAP_NETWORK="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 ${TAP_NETWORK}  netmask 255.255.255.0 promisc
    ifconfig tap$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 
chkconfig --add config_tap 
chkconfig --level 345 config_tap on
service config_tap start

原文鏈接：https://blog.csdn.net/qq_31086997/article/details/121884793

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