Linux双网卡绑定脚本的方法示例

linux运维及配置工作中，常常会用到双网卡绑定，少数几台服务器的配置还好，如果是需要配置几十甚至上百台，难免会枯燥乏味，易于出错，我编写了这个双网卡绑定的辅助脚本，可傻瓜式地完成linux双网卡绑定工作，当然，该脚本主要还是用于小批量的系统配置，如需配置大量的服务器，可提取脚本中的bonding函数，稍作修改即可，你值得一试！

1.适用范围

该shell脚本可在以下linux系统创建多个绑定网卡，用于生产环境没问题的：

Redhat 5.x
CentOS 5.x
Kylin 3.x
KUX 2.x

2.脚本特点

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    The information you have entered:    First NIC   :eth0  Second NIC  :eth1  bond name   :bond1  IP address  :192.168.56.11  netmask    :255.255.255.0  bonding_mode :mode=1  primary NIC  :none  ----------------------------------------------    Pls make sure its OK[y/n]:y

如上，脚本在使用过程中，会依次提示输入需要绑定的子网卡名称、绑定网卡名称、IP地址和子网掩码、绑定模式、是否指定主网卡，并主动对系统中可用网卡进行识别并列出，供用户选择，同时会判断输入的各项信息的正确性，保障双网卡绑定顺利进行。

3.使用说明

首先将脚本上传至linux系统任意目录下，使用root用户执行：

  [root@node1 tmp]# sh bonding_v2.0.sh     ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------       4 network cards available:  eth0 eth1 eth2 eth3  ----------------------------------------------    Please enter the First NIC:_

首先脚本会列出系统中有多少可用网卡，并提示输入需要绑定的第一块子网卡的名称，这里输入eth2。

无需担心输入错误，输入重复等问题，脚本会自动判断你的输入信息是否正确。

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    4 network cards available:  eth0 eth1 eth2 eth3    The information you have entered:  First NIC   : eth2  ----------------------------------------------    Please select the second NIC:_

接着输入需要绑定的第二块网卡的名称eth3，如果输入错误会出现相应的提示，比如错输入为eth8，会提示需要重新输入：

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    4 network cards available:  eth0 eth1 eth2 eth3    The information you have entered:  First NIC   : eth2  ----------------------------------------------    eth8 is not available,Please enter another one.    Please select the second NIC:_

正确输入需要绑定的第二块网卡eth3后，如果linux系统中之前不存在绑定网卡，则默认第一个绑定网卡的名称为bond0，如果系统中存在绑定网卡，脚本会提示输入bondN(N为数字)：

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    The information you have entered:  First NIC   : eth2  Second NIC  : eth3  bond name   : bond0  ----------------------------------------------    The default first bond name is -- bond0.    Please enter an IP address:_

按照提示输入需要绑定的IP地址，比如10.1.1.1

脚本会自动判断输入的IP地址格式和范围是否正确，无需担心输入错误

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    The information you have entered:  First NIC   : eth2  Second NIC  : eth3  bond name   : bond0  IP address  : 10.1.1.1  ----------------------------------------------    Pls enter the NETMASK[255.255.255.0]:_

输入IP地址后，会提示输入子网掩码，默认为255.255.255.0，直接回车即可，也可以输入自定义的子网掩码。

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    The information you have entered:  First NIC   : eth2  Second NIC  : eth3  bond name   : bond0  IP address  : 10.1.1.1  netmask    : 255.255.255.0  ----------------------------------------------    Pls enter the bonding_mode[default:mode=1,active-backup]:_

这一步是输入网卡绑定级别，默认使用主备模式：mode=1，直接回车即可，也可以输入自定义的绑定级别（如输入 mode=6），格式为：

  mode=｛0,1,2,3,4,5,6｝    ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    The information you have entered:    First NIC   :eth2  Second NIC  :eth3  bond name   :bond0  IP address  :10.1.1.1  netmask    :255.255.255.0  bonding_mode :mode=1  ----------------------------------------------    1-eth2  2-eth3  3-none  choose whether to set up the primary NIC or not[default:3-none]:_

此时脚本提示是否设置primary网卡，primary网卡的作用是在子网卡均正常时，primary网卡优先处于活动状态，这里默认为不设置primary网卡，也可以输入数字1或2选择一个网卡为primary网卡。

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    The information you have entered:    First NIC   :eth2  Second NIC  :eth3  bond name   :bond0  IP address  :10.1.1.1  netmask    :255.255.255.0  bonding_mode :mode=1  primary NIC  :none  ----------------------------------------------    Pls make sure its OK[y/n]:_

至此，所有信息输入完毕，脚本会让您判断输入的所有信息是否正确，正确则输入y，进行下一步操作，否则输入n，重新输入以上信息。

  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    Complete!  File backup directory: /etc/sysconfig/network-scripts/inspur_bak    you can check the file and then restart the network service.    1 ) service network restart  2 ) exit  ----------------------------------------------  Please make your choice:_

看到这里时，所有绑定网卡的配置文件已经修改完毕了，输入1重启网络服务；输入2直接退出脚本。

建议选择重启网络服务，如果直接退出脚本而不重启网络服务，修改的配置文件是不会生效的，并且在使用该脚本创建下一个绑定网卡时显示信息会出现异常(因为脚本通过ifconfig命令获取当前网卡信息)。

  you can check the file and then restart the network service.    1 ) service network restart  2 ) exit    ----------------------------------------------  Please make your choice:1  正在关闭接口 eth0：                    [确定]  正在关闭接口 eth1：                    [确定]  正在关闭接口 eth2：                    [确定]  正在关闭接口 eth3：                    [确定]  关闭环回接口：                       [确定]  弹出环回接口：                       [确定]  弹出界面 bond0： RTNETLINK answers: File exists  在 bond0 添加地址 10.1.1.1 时出错。                                [确定]  弹出界面 eth0：                      [确定]  弹出界面 eth1：                      [确定]

第一次重启网络服务时可能会出现以上类似报错，无需担心，其实配置已经完成，再次重启网络服务即恢复正常。

在绑定过程中修改的配置文件如下：

  [root@node1 tmp]# cd /etc/sysconfig/network-scripts/  [root@node1 network-scripts]# cat ifcfg-bond0   DEVICE=bond0  BOOTPROTO=none  ONBOOT=yes  TYPE=Ethernet  USERCTL=no  IPV6INIT=no  PEERDNS=yes  IPADDR=10.1.1.1  NETMASK=255.255.255.0  BONDING_OPTS="miimon=100 mode=1"    [root@node1 network-scripts]# cat ifcfg-eth2   DEVICE=eth2  BOOTPROTO=none  #HWADDR=08:00:27:41:b4:16  ONBOOT=yes  TYPE=Ethernet  USERCTL=no  IPV6INIT=no  PEERDNS=yes  SLAVE=yes  MASTER=bond0    [root@node1 network-scripts]# cat ifcfg-eth3  DEVICE=eth3  BOOTPROTO=none  #HWADDR=08:00:27:6c:3d:0c  ONBOOT=yes  TYPE=Ethernet  USERCTL=no  IPV6INIT=no  PEERDNS=yes  SLAVE=yes  MASTER=bond0    [root@node1 network-scripts]# cat /etc/modprobe.conf  alias scsi_hostadapter ata_piix  alias scsi_hostadapter1 ahci  alias net-pf-10 off  alias ipv6 off  options ipv6 disable=1  alias snd-card-0 snd-intel8x0  options snd-card-0 index=0  options snd-intel8x0 index=0  remove snd-intel8x0 { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-intel8x0  alias eth0 e1000  alias eth1 e1000  alias eth2 e1000  alias eth3 e1000  alias bond0 bonding

网络配置信息如下：

  [root@node1 tmp]# ifconfig   bond0   Link encap:Ethernet HWaddr 08:00:27:41:B4:16        inet addr:10.1.1.1 Bcast:10.1.1.255 Mask:255.255.255.0       UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1       RX packets:1197 errors:0 dropped:0 overruns:0 frame:0       TX packets:125 errors:0 dropped:0 overruns:0 carrier:0       collisions:0 txqueuelen:0        RX bytes:106338 (103.8 KiB) TX bytes:16662 (16.2 KiB)    eth0   Link encap:Ethernet HWaddr 08:00:27:35:B4:81        inet addr:192.168.56.11 Bcast:192.168.56.255 Mask:255.255.255.0       UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1       RX packets:1487 errors:0 dropped:0 overruns:0 frame:0       TX packets:1190 errors:0 dropped:0 overruns:0 carrier:0       collisions:0 txqueuelen:1000        RX bytes:146576 (143.1 KiB) TX bytes:151787 (148.2 KiB)    eth1   Link encap:Ethernet HWaddr 08:00:27:72:08:46        inet addr:10.1.1.11 Bcast:10.1.1.255 Mask:255.255.255.0       UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1       RX packets:193 errors:0 dropped:0 overruns:0 frame:0       TX packets:455 errors:0 dropped:0 overruns:0 carrier:0       collisions:0 txqueuelen:1000        RX bytes:31434 (30.6 KiB) TX bytes:22657 (22.1 KiB)    eth2   Link encap:Ethernet HWaddr 08:00:27:41:B4:16        UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1       RX packets:591 errors:0 dropped:0 overruns:0 frame:0       TX packets:93 errors:0 dropped:0 overruns:0 carrier:0       collisions:0 txqueuelen:1000        RX bytes:55217 (53.9 KiB) TX bytes:10511 (10.2 KiB)    eth3   Link encap:Ethernet HWaddr 08:00:27:41:B4:16        UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1       RX packets:606 errors:0 dropped:0 overruns:0 frame:0       TX packets:32 errors:0 dropped:0 overruns:0 carrier:0       collisions:0 txqueuelen:1000        RX bytes:51121 (49.9 KiB) TX bytes:6151 (6.0 KiB)    lo    Link encap:Local Loopback        inet addr:127.0.0.1 Mask:255.0.0.0       UP LOOPBACK RUNNING MTU:16436 Metric:1       RX packets:3297 errors:0 dropped:0 overruns:0 frame:0       TX packets:3297 errors:0 dropped:0 overruns:0 carrier:0       collisions:0 txqueuelen:0        RX bytes:4725726 (4.5 MiB) TX bytes:4725726 (4.5 MiB)

双网卡绑定信息：

  [root@node1 tmp]# cat /proc/net/bonding/bond0   Ethernet Channel Bonding Driver: v3.4.0-2 (October 7, 2008)    Bonding Mode: fault-tolerance (active-backup)  Primary Slave: None  Currently Active Slave: eth2  MII Status: up  MII Polling Interval (ms): 100  Up Delay (ms): 0  Down Delay (ms): 0    Slave Interface: eth2  MII Status: up  Speed: 1000 Mbps  Duplex: full  Link Failure Count: 0  Permanent HW addr: 08:00:27:41:b4:16    Slave Interface: eth3  MII Status: up  Speed: 1000 Mbps  Duplex: full  Link Failure Count: 0  Permanent HW addr: 08:00:27:6c:3d:0c

4.脚本代码

  #!/bin/bash  # Date:2018-11-26 14:28:45  # Author:ZhangJian  # Mail:1037509307@qq.com  # Func:Configure Network Bonding  # Version:2.0  #V1.6版本更新:不再将绑定的模式mode=x写入modprobe.conf文件，将其写入ifcfg-bond中，因为在modprobe.conf文件中时，修改了mode模式后，重启网络服务可能不生效。  #V2.0版本更新:将primary网卡设置为可选择项。    trap "tput clear;tput cup 3;echo 'Any Questions: Send a message to QQ 1037509307.';tput cup 6;exit" 2 3  if [[ -n $1 ]]; then   cat <<EOF    Network Configuration Assistant            --- Configure Network Bonding v1.5    Usage:        sh $0      chmod +x $0 && ./$0    EOF  exit 0  fi    if [[ $UID -ne 0 ]]; then   tput clear   tput cup 6 20   echo -e "You must use the user: 33[31mROOT33[0m"   tput cup 10   exit  fi    ERROR(){  tput cup $1 $2;tput ed  echo 'Input error,Try again pls.'  echo -e 'Press ENTER to continue..._bc'  read inputA  }    Check_BakFile(){  #文件备份函数  #使用方法：  #Check_BakFile 要备份的文件名 备份目录 -x(按什么时间格式备份)  case ${3} in    -d ) #按天备份      Bak_Date=`date '+%Y-%m-%d'`      ;;    -H ) #按小时备份      Bak_Date=`date '+%Y-%m-%d_%H'`      ;;    -M ) #按分钟备份      Bak_Date=`date '+%Y-%m-%d_%H:%M'`      ;;    -m ) #按月备份      Bak_Date=`date '+%Y-%m'`      ;;    -Y ) #按年备份      Bak_Date=`date '+%Y'`      ;;    * ) #默认按分钟备份      Bak_Date=`date '+%Y-%m-%d_%H:%M'`      ;;  esac  #Bak_Date=`date '+%Y-%m-%d-%H:%M'`    [[ -d ${2}/${Bak_Date} ]] || mkdir -p ${2}/${Bak_Date}  cp -ra ${1} ${2}/${Bak_Date}  }    bonding_pre(){  #双网卡绑定前导函数，判定网卡、IP等合法性并引导用户正确输入参数。  #全部真实网卡  NIC_NAME_all=`ifconfig -a | awk '/<Ethernet>/ {print $1}' | grep -wEv '^bond[0-9]+'`  #已经存在的绑定网卡  NIC_NAME_bond=`ifconfig -a | awk '/^<bond[0-9]+>/ {print $1}'`    #打印出已经是SLAVE的网卡  NIC_NAME_slave=`ifconfig -a | sed -n '/SLAVE/{g;1!p;};h' | awk '{print $1}'`  NIC_NAME_slave=${NIC_NAME_slave:=NULL}  #打印出可用网卡  NIC_NAME_free=`echo "$NIC_NAME_all" | grep -Fwv "$NIC_NAME_slave"`  #可用网卡数量  NIC_NAME_free_nu=`echo "$NIC_NAME_free" | wc -w`    declare -a NIC_LIST  NIC_LIST=($NIC_NAME_free)    info_print(){  tput clear;tput cup 2  cat <<EOF  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------  EOF  tput cup 7  if [[ -n ${1} ]]; then   echo -e "Already existing Channel Bonding Interface of the system:n33[31m${1}33[0mn"  fi  }    if [[ "$NIC_NAME_free_nu" -gt 1 ]]; then   info_print   echo -e "33[031m$NIC_NAME_free_nu33[0m network cards available:"   echo -e "33[31m${NIC_LIST[@]}33[0m"   echo -e "----------------------------------------------n"   #输入第一块网卡的名称   while true; do    echo -e "nPlease enter the First NIC:_bc"    read NIC1    echo ${NIC_LIST[@]} | grep -Fw "$NIC1" &> /dev/null    if [[ $? -eq 0 ]]; then     info_print     echo -e "33[031m$NIC_NAME_free_nu33[0m network cards available:n33[31m${NIC_LIST[@]}33[0m"     echo -e "nThe information you have entered:nFirst NIC   : $NIC1"     echo -e "----------------------------------------------n"     break    else     info_print     echo -e "33[031m$NIC_NAME_free_nu33[0m network cards available:n33[31m${NIC_LIST[@]}33[0m"     echo -e "----------------------------------------------n"     echo -e "33[31m${NIC1}33[0m is not available,Please enter another one."    fi   done   #输入第二块网卡的名称   while true; do    echo -e "nPlease select the second NIC:_bc"    read NIC2    if [[ ${NIC1} != ${NIC2} ]]; then     echo ${NIC_LIST[@]} | grep -Fw "${NIC2}" &> /dev/null     if [[ $? -eq 0 ]]; then      info_print "${NIC_NAME_bond}"      echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}"      echo -e "----------------------------------------------n"      break     else      info_print      echo -e "33[031m$NIC_NAME_free_nu33[0m network cards available:n33[31m${NIC_LIST[@]}33[0mnnThe information you have entered:nFirst NIC   : ${NIC1}"      echo -e "----------------------------------------------n"      echo -e "33[31m${NIC2}33[0m is not available,Please enter another one."     fi    else     info_print     echo -e "33[031m${NIC_NAME_free_nu}33[0m network cards available:n33[31m${NIC_LIST[@]}33[0mnnThe information you have entered:nFirst NIC   : ${NIC1}"     echo -e "----------------------------------------------n"     echo -e "33[31m${NIC2}33[0m is the first NIC,Please enter another one."    fi   done     #输入绑定网卡名称并进行合理性检查   if [[ -z ${NIC_NAME_bond} ]]; then    NAME_bond=bond0    info_print    echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}"    echo -e "----------------------------------------------n"    echo "The default first bond name is -- bond0."   else    while true; do     echo -e "nPlease enter a bond name[bonN]:_bc"     read NAME_bond     #检查输入格式是否为bond+数字的格式。     echo "${NAME_bond}" | grep -wE '^bond[[:digit:]]+$' &> /dev/null     if [[ $? -eq 0 ]]; then      echo "${NIC_NAME_bond}" | grep -Fw "${NAME_bond}" &> /dev/null      if [[ $? -ne 0 ]]; then       info_print "${NIC_NAME_bond}"       echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}"       echo -e "----------------------------------------------n"       break      else       info_print "${NIC_NAME_bond}"       echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}"       echo -e "----------------------------------------------n"       echo "You can not use an existing name: ${NAME_bond}"       echo -e "33[31m${NAME_bond}33[0m is not available,Please enter another one like -- bondN."      fi     else      info_print "${NIC_NAME_bond}"      echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}"      echo -e "----------------------------------------------n"      echo -e "33[31m${NAME_bond}33[0m is not available,Please enter another one like -- bondN."     fi    done   fi     #设置IP地址   while true; do    echo -e "nPlease enter an IP address:_bc"    read IP_bond    echo "${IP_bond}" | grep -owE '^(([1-9]|[1-9][0-9]|1[0-9]{2}|2[0-5]{2}).){3}([1-9]|[1-9][0-9]|1[0-9]{2}|2[0-5]{2})$' &> /dev/null    if [[ $? -eq 0 ]]; then     info_print     echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}nIP address  : ${IP_bond}"     echo -e "----------------------------------------------n"     break    else     info_print     echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}"     echo -e "----------------------------------------------n"     echo -e "IP address: 33[31m${IP_bond}33[0m format errors, please re-enter."    fi   done   #设置netmask   while true; do    echo -e "nPls enter the NETMASK[255.255.255.0]:_bc"    read NETMASK_bond    NETMASK_bond=${NETMASK_bond:="255.255.255.0"}  #当变量为NETMASK_bond为空时，给其赋默认值255.255.255.0    echo "$NETMASK_bond" | grep -owE '^(128|192|224|240|248|252|254|255).((0|128|192|224|240|248|252|254|255).){2}(0|128|192|224|240|248|252|254|255)$' &> /dev/null    if [[ $? -eq 0 ]]; then     info_print     echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}nIP address  : ${IP_bond}nnetmask    : ${NETMASK_bond}"     echo -e "----------------------------------------------n"     break    else     info_print     echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}nIP address  : ${IP_bond}"     echo -e "----------------------------------------------n"     echo -e "Input error.nPlease enter the correct NETMASK or press ENTER to use 255.255.255.0.n"    fi   done  #:<<!zhushi! #批量注释，如果开启批量注释，默认mode=1   while true; do    echo -e "nPls enter the bonding_mode[default:mode=1,active-backup]:_bc"    read mode_bond    mode_bond=${mode_bond:="mode=1"}  #当变量为mode_bond为空时，给其赋默认值1    if [[ ! ${mode_bond} =~ "mode=[0-6]" ]]; then     info_print     echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}nIP address  : ${IP_bond}netmask    : ${NETMASK_bond}"     echo -e "----------------------------------------------n"     echo "Invalid answer: ${mode_bond}"     echo "Eg: mode={0,1,2,3,4,5,6}"    else     info_print     echo -e "The information you have entered:n"     echo -e "First NIC   :${NIC1}nSecond NIC  :${NIC2}nbond name   :${NAME_bond}nIP address  :${IP_bond}nnetmask    :${NETMASK_bond}nbonding_mode :${mode_bond}"     echo -e "----------------------------------------------n"     break    fi   done  #!zhushi!     #选择是否设置primary网卡   while true; do    echo "1-${NIC1}"    echo "2-${NIC2}"    echo "3-none"    echo -e "choose whether to set up the primary NIC or not[default:3-none]:_bc"    read get_primary_NIC    get_primary_NIC=${get_primary_NIC:="none"}      case ${get_primary_NIC} in      1 )       get_primary_NIC=${NIC1}       #echo "--$get_primary_NIC"       break       ;;      2 )       get_primary_NIC=${NIC2}        #echo "--$get_primary_NIC"       break       ;;      3 )       get_primary_NIC=none        #echo "--$get_primary_NIC"       break       ;;      none )       break       ;;      * )        #echo "--$get_primary_NIC"       info_print       echo -e "The information you have entered:nFirst NIC   : ${NIC1}nSecond NIC  : ${NIC2}nbond name   : ${NAME_bond}nIP address  : ${IP_bond}nnetmask    : ${NETMASK_bond}"       echo -e "----------------------------------------------n"       echo "Invalid answer: ${get_primary_NIC}"       echo "Pls input a number in {1,2,3} or press ENTER to set up primary NIC none."       continue       ;;     esac       info_print     echo -e "The information you have entered:n"     echo -e "First NIC   :${NIC1}nSecond NIC  :${NIC2}nbond name   :${NAME_bond}nIP address  :${IP_bond}nnetmask    :${NETMASK_bond}nbonding_mode :${mode_bond}nprimary NIC  :${get_primary_NIC}"     echo -e "----------------------------------------------n"     break   done     #最终输入信息确认   while true; do    info_print    echo -e "The information you have entered:n"    echo -e "33[31mFirst NIC   :${NIC1}nSecond NIC  :${NIC2}nbond name   :${NAME_bond}nIP address  :${IP_bond}nnetmask    :${NETMASK_bond}nbonding_mode :${mode_bond}nprimary NIC  :${get_primary_NIC}33[0m"    echo -e "----------------------------------------------n"    echo -e "Pls make sure its OK[y/n]:_bc"    read input    case ${input} in     [Yy]|[Yy][Ee][Ss] )      bonding "$NIC1" "$NIC2" "$NAME_bond" "$IP_bond" "$NETMASK_bond"      break      ;;     [Nn]|[Nn][Oo] )      bonding_pre     ;;     * )      tput cup 7;tput ed      ERROR 7 10     ;;    esac   done  else    info_print    echo -e "You have 33[031m${NIC_NAME_free_nu}33[0m network cards available:n"    #将重点显示的“网卡名”标示为红色    echo -e "33[31m${NIC_LIST[@]}33[0mn"    echo -e "There are 33[31mnot enough33[0m network cards to make bonding"    echo -e "Pls check it......n"    echo -e 'Press ENTER to exit..._bc'    read answer    exit 1  fi  }    bonding(){  if [[ $# -lt 5 ]]  then   echo 'Bonding failed! Please provide enough information!'   echo -e "nUsage:n    sh bonding.sh <NIC1_name> <NIC2_name> <bond_name> <IP> <NETMASK>nn"   exit 1  fi  #get device name and ip information  SLAVE1_DEV="$1"    #SLAVE1_DEV=ethx  SLAVE2_DEV="$2"    #SLAVE2_DEV=ethx  BOND_DEV="$3"     #BOND_DEV=bondx  SLAVE1=ifcfg-"$1"  SLAVE2=ifcfg-"$2"  BOND=ifcfg-"$3"  BOND_IPADDR="$4"  BOND_NETMASK="$5"  BOND_DIR=/etc/sysconfig/network-scripts  if [ -e $BOND_DIR/$BOND ]  then   echo $BOND_DIR/$BOND is already exist  else   #file backup   Check_BakFile "${BOND_DIR}/ifcfg-*" "${BOND_DIR}/inspur_bak" "-M"    #get mac address   SLAVE1_MAC=`grep 'HWADDR' ${BOND_DIR}/${SLAVE1}`   SLAVE2_MAC=`grep 'HWADDR' ${BOND_DIR}/${SLAVE2}`     # modify $BOND   touch $BOND_DIR/$BOND   echo "DEVICE=${BOND_DEV}" >> $BOND_DIR/$BOND   echo "BOOTPROTO=none" >> $BOND_DIR/$BOND   echo "ONBOOT=yes" >> $BOND_DIR/$BOND   echo "TYPE=Ethernet" >> $BOND_DIR/$BOND   echo "USERCTL=no" >> $BOND_DIR/$BOND   echo "IPV6INIT=no" >> $BOND_DIR/$BOND   echo "PEERDNS=yes" >> $BOND_DIR/$BOND   echo "IPADDR=${BOND_IPADDR}" >> $BOND_DIR/$BOND   echo "NETMASK=${BOND_NETMASK}" >> $BOND_DIR/$BOND   if [[ ${get_primary_NIC} == none ]]; then     echo "BONDING_OPTS="miimon=100 ${mode_bond}"" >> $BOND_DIR/$BOND   else     echo "BONDING_OPTS="miimon=100 ${mode_bond} primary=$(echo ${SLAVE1} | cut -d'-' -f2)"" >> $BOND_DIR/$BOND   fi     # modify $SLAVE1   > $BOND_DIR/$SLAVE1   echo "DEVICE=${SLAVE1_DEV}" >> $BOND_DIR/$SLAVE1   echo 'BOOTPROTO=none' >> $BOND_DIR/$SLAVE1   #cat $BOND_DIR/../ifcfg-bak/$SLAVE1 |grep HWADDR >> $BOND_DIR/$SLAVE1   echo "#$SLAVE1_MAC" >> $BOND_DIR/$SLAVE1   echo ONBOOT=yes >> $BOND_DIR/$SLAVE1   echo TYPE=Ethernet >> $BOND_DIR/$SLAVE1   echo USERCTL=no >> $BOND_DIR/$SLAVE1   echo IPV6INIT=no >> $BOND_DIR/$SLAVE1   echo PEERDNS=yes >> $BOND_DIR/$SLAVE1   echo SLAVE=yes >> $BOND_DIR/$SLAVE1   echo MASTER=$BOND_DEV >> $BOND_DIR/$SLAVE1     # modify SLAVE2   > $BOND_DIR/$SLAVE2   echo "DEVICE=$SLAVE2_DEV" >> $BOND_DIR/$SLAVE2   echo BOOTPROTO=none >> $BOND_DIR/$SLAVE2   #cat $BOND_DIR/../ifcfg-bak/$SLAVE2 |grep HWADDR >> $BOND_DIR/$SLAVE2   echo "#$SLAVE2_MAC" >> $BOND_DIR/$SLAVE2   echo ONBOOT=yes >> $BOND_DIR/$SLAVE2   echo TYPE=Ethernet >> $BOND_DIR/$SLAVE2   echo USERCTL=no >> $BOND_DIR/$SLAVE2   echo IPV6INIT=no >> $BOND_DIR/$SLAVE2   echo PEERDNS=yes >> $BOND_DIR/$SLAVE2   echo SLAVE=yes >> $BOND_DIR/$SLAVE2   echo MASTER=$BOND_DEV >> $BOND_DIR/$SLAVE2     [[ -e /etc/modprobe.conf.bak ]] && cp /etc/modprobe.conf /etc/modprobe.conf.bak.new || cp /etc/modprobe.conf /etc/modprobe.conf.bak   echo "alias $BOND_DEV bonding" >> /etc/modprobe.conf    while true; do   tput clear;tput cup 2  cat <<EOF  ----------------------------------------------  ------ Network Configuration Assistant ------  ----------------------------------------------    Complete!  File backup directory: ${BOND_DIR}/inspur_bak    you can check the file and then restart the network service.    1 ) service network restart  2 ) exit  ----------------------------------------------  EOF    echo -e "Please make your choice:_bc"    read answer     case ${answer} in      1 )       service network restart       exit 0       ;;      2 )       exit 0       ;;     esac     done  fi  }    main(){   while true; do    bonding_pre   done  }

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