Linux脚本

#!/bin/bash

# Linux克隆后配置修改，修改如下内容
# 主机名
# 设备映射
# 修改网卡
# 配置网关
# 配置NTP
# AUTHOR : ldk
# VERSION: 1.0
# 日期   ：2016.01.06


unset V_HOSTNAME
unset V_IPADDR
unset V_NETMASK
unset V_GATEWAY
unset V_NTPADDR

# 输入新主机名
while true
do
read -p "########### Please input new hostname: " V_HOSTNAME
if [ ! -n "$V_HOSTNAME" ]; then
  echo "New hostname Input error! "
 else
  if [[ $V_HOSTNAME =~ ^[a-zA-Z0-9]{1,30}[a-zA-Z0-9_-]{0,30}[a-zA-Z0-9]{0,30}$ ]] && [[ $V_HOSTNAME =~ [a-zA-Z] ]];then
     break
  else
     echo "New hostname Input error! "
  fi
fi
done


# 输入新IP地址
while true
do
read -p "########### Please input new ip address: " V_IPADDR
if [ ! -n "$V_IPADDR" ]; then
  echo "New ip address Input error! "
 else
  if [[ $V_IPADDR =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
     OIFS=$IFS
     IFS='.'
     V_TEMPIP=($V_IPADDR)
     IFS=$OIFS
     if [[ ${V_TEMPIP[0]} -lt 255 && ${V_TEMPIP[1]} -lt 255 && ${V_TEMPIP[2]} -lt 255 && ${V_TEMPIP[3]} -lt 255 && ${V_TEMPIP[0]} -ne 0 && ${V_TEMPIP[3]} -ne 0 ]]; then
        break
     else
        echo "New ip address Input error! "
     fi
  else
     echo "New ip address Input error! "
  fi
fi
done

# 输入新IP掩码
while true
do
read -p "########### Please input new ip netmask: " V_NETMASK
if [ ! -n "$V_NETMASK" ]; then
  echo "New ip netmask Input error! "
else
  if [[ $V_NETMASK =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
     OIFS=$IFS
     IFS='.'
     V_TEMPMASK=($V_NETMASK)
     IFS=$OIFS
     if [[ ${V_TEMPMASK[0]} -lt 256 && ${V_TEMPMASK[1]} -lt 256 && ${V_TEMPMASK[2]} -lt 256 && ${V_TEMPMASK[3]} -lt 256 ]]; then
        
        V_SUMMASK=`echo $V_NETMASK | awk -F'.' '{print ($1*(2^24)+$2*(2^16)+$3*(2^8)+$4)}'`
        V_BINMASK=`echo "obase=2;${V_SUMMASK}" | bc`
        if [[ $V_BINMASK =~ ^[1]{1,32}[0]{1,32}$ ]]; then
           V_BINMASKLENGTH=${#V_BINMASK}
           if [ $V_BINMASKLENGTH -eq 32 ];then
              V_PREFIX=`echo $V_BINMASK | awk -F'0' '{print length($1)}'`
              break
           else
              echo "New ip netmask Input error! "
           fi
        else
           echo "New ip netmask Input error! "
        fi

     else
        echo "New ip netmask Input error! "
     fi
  elif [[ $V_NETMASK =~ ^[0-9]{1,2}$ ]];then
     if [[ $V_NETMASK -gt 0 && $V_NETMASK -lt 32 ]];then
        V_PREFIX=$V_NETMASK
        break
     else
        echo "New ip netmask Input error! "
     fi
  else
     echo "New ip netmask Input error! "
  fi
fi
done

# 输入新网关
while true
do
read -p "########### Please input new gateway: " V_GATEWAY
if [ ! -n "$V_GATEWAY" ]; then
  echo "New gateway Input error! "
 else 
  if [[ $V_GATEWAY =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
     OIFS=$IFS
     IFS='.'
     V_TEMPGW=($V_GATEWAY)
     IFS=$OIFS
     if [[ ${V_TEMPGW[0]} -lt 255 && ${V_TEMPGW[1]} -lt 255 && ${V_TEMPGW[2]} -lt 255 && ${V_TEMPGW[3]} -lt 255 && ${V_TEMPGW[0]} -ne 0 && ${V_TEMPGW[3]} -ne 0 ]]; then
        break
     else
        echo "New gateway Input error! "
     fi
  else
     echo "New gateway Input error! "
  fi
fi
done

# 输入新NTP服务器
while true
do
read -p "########### Please input new ntp server: " V_NTPADDR
if [ ! -n "$V_NTPADDR" ]; then
  echo "New ntp server Input null,continue "
  break
 else 
  if [[ $V_NTPADDR =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
     OIFS=$IFS
     IFS='.'
     V_TEMPNTP=($V_NTPADDR)
     IFS=$OIFS
     if [[ ${V_TEMPNTP[0]} -lt 255 && ${V_TEMPNTP[1]} -lt 255 && ${V_TEMPNTP[2]} -lt 255 && ${V_TEMPNTP[3]} -lt 255 && ${V_TEMPNTP[0]} -ne 0 && ${V_TEMPNTP[3]} -ne 0 ]]; then
        break
     else
        echo "New ntp server Input error! "
     fi
  else
     echo "New ntp server Input error! "
  fi
fi
done


echo "##########################################"
echo "## The new hostname   is: "$V_HOSTNAME
echo "## The new ip address is: "$V_IPADDR
echo "## The new ip prefix  is: "$V_PREFIX
echo "## The new gateway    is: "$V_GATEWAY
echo "## The new ntp server is: "$V_NTPADDR
echo "##########################################"

read -p "Please confirm above information (Enter for OK, or CTL+C)" V_CONFIRM

# 修改主机名
echo "######## Begin modify hostname ########"
echo "NETWORKING=yes"           > /etc/sysconfig/network
echo "HOSTNAME="$V_HOSTNAME    >> /etc/sysconfig/network
echo "GATEWAY="$V_GATEWAY      >> /etc/sysconfig/network
hostname $V_HOSTNAME
echo "######## End modify hostname ########"

# 设置NTP服务器
if [ ! -n "$V_NTPADDR" ]; then
  :
 else 
  if [ -f /var/spool/cron/root ];then
     echo "######## Begin delete old ntp server ########"
     vi /var/spool/cron/root <<EOF
/ntpdate
dd
:wq!
EOF
  fi
  echo "######## Begin add ntp server ########"
  echo "0,30 * * * * /usr/sbin/ntpdate "$V_NTPADDR" && /sbin/hwclock --systohc > /dev/null 2>&1 " >> /var/spool/cron/root
  echo "######## End add ntp server ########"
fi

# 修改网卡配置
if [ -d /sys/class/net/eth0 ];then
   echo "######## Begin change ip config ########"
   echo "TYPE=Ethernet"     > /etc/sysconfig/network-scripts/tmp-eth0
   echo "DEVICE=eth0"      >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "NAME=eth0"        >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "HWADDR="`cat /sys/class/net/eth0/address` >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "BOOTPROTO=none"   >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "ONBOOT=yes"       >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "IPADDR="$V_IPADDR >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "PREFIX="$V_PREFIX >> /etc/sysconfig/network-scripts/tmp-eth0
   echo "NM_CONTROLLED=no" >> /etc/sysconfig/network-scripts/tmp-eth0
   mv -f /etc/sysconfig/network-scripts/tmp-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0

   echo "Begin to restart network service"
   service network restart
   echo "######## End change ip config ########"
else
   IFNUM=0
   ls -d /sys/class/net/eth* | sort -n | awk -F'/' '{print $NF}' | while read IFNAME
   do
   V_IFMAC=`cat /sys/class/net/$IFNAME/address`
   
   V_OIFMAC=`grep  ^"SUBSYSTEM==\"net\"" /etc/udev/rules.d/70-persistent-net.rules  | grep eth$IFNUM | awk -F'\"' '{print $8}' `
   
   vi /etc/udev/rules.d/70-persistent-net.rules <<EOF
/$V_IFMAC
dd
:1,$s/$V_OIFMAC/$V_IFMAC/g
:wq!
EOF
   
   if [ -f /etc/sysconfig/network-scripts/ifcfg-eth$IFNUM ];then
      mv /etc/sysconfig/network-scripts/ifcfg-eth$IFNUM  /etc/sysconfig/ifcfg-eth$IFNUM 
   fi
   
   if [ $IFNUM -eq 0 ];then
      echo "######## Begin change ip config ########"
      echo "TYPE=Ethernet"     > /etc/sysconfig/network-scripts/tmp-eth0
      echo "DEVICE=eth0"      >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "NAME=eth0"        >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "HWADDR="`cat /sys/class/net/$IFNAME/address` >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "BOOTPROTO=none"   >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "ONBOOT=yes"       >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "IPADDR="$V_IPADDR >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "PREFIX="$V_PREFIX >> /etc/sysconfig/network-scripts/tmp-eth0
      echo "NM_CONTROLLED=no" >> /etc/sysconfig/network-scripts/tmp-eth0
      mv -f /etc/sysconfig/network-scripts/tmp-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0
   fi
   
   ((IFNUM=IFNUM+1))
   done
   
   echo "######## End change ip config ########"
   echo "Ethernet name have changed, please reboot the server"
fi
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