生产脚本案例集锦

LVS客户端自动配置
 1 #/bin/bash
VIP=(202.106.195.111 202.106.195.222)
[ -e /etc/sysctl.conf ]&&rm -f /etc/sysctl.conf
[ -e /etc/sysconfig/network-scripts/ifcfg-lo:0 ]&&rm -f /etc/sysconfig/network-scripts/ifcfg-lo:0
[ -e /etc/sysconfig/network-scripts/ifcfg-lo:1 ]&&rm -f /etc/sysconfig/network-scripts/ifcfg-lo:1

echo "net.ipv4.conf.all.arp_ignore = 1">/etc/sysctl.conf
echo "net.ipv4.conf.all.arp_announce = 2">>/etc/sysctl.conf
echo "net.ipv4.conf.default.arp_ignore = 1">>/etc/sysctl.conf
echo "net.ipv4.conf.default.arp_announce = 2">>/etc/sysctl.conf
echo "net.ipv4.conf.lo.arp_ignore = 1">>/etc/sysctl.conf
echo "net.ipv4.conf.lo.arp_announce = 2">>/etc/sysctl.conf
sysctl -p &>/dev/null

cd /etc/sysconfig/network-scripts
for ((i=0;i<`echo ${#VIP[*]}`;i++))
do
  cp ifcfg-lo ifcfg-lo:$i
  echo "DEVICE=lo:$i">ifcfg-lo:$i
  echo "IPADDR=${VIP[$i]}">>ifcfg-lo:$i
  echo "NETMASK=255.255.255.255">>ifcfg-lo:$i
  echo "ONBOOT=yes">>ifcfg-lo:$i
  ifup ifcfg-lo:$i
  /usr/sbin/route add -host ${VIP[$i]} dev lo:$i &>/dev/null
done


企业日常巡检：

#!/bin/bash

function system(){
echo "#########################系统信息#########################"
OS_TYPE=`uname`
OS_VER=`cat /etc/redhat-release`
OS_KER=`uname -a|awk '{print $3}'`
OS_TIME=`date +%F_%T`
OS_RUN_TIME=`uptime |awk '{print $3}'|awk -F, '{print $1}'`
OS_LAST_REBOOT_TIME=`who -b|awk '{print $2,$3}'`
OS_HOSTNAME=`hostname`

echo "    系统类型：$OS_TYPE"
echo "    系统版本：$OS_VER"
echo "    系统内核：$OS_KER"
echo "    当前时间：$OS_TIME"
echo "    运行时间：$OS_RUN_TIME"
echo "最后重启时间：$OS_LAST_REBOOT_TIME"
echo "    本机名称：$OS_HOSTNAME"
}
function network(){

echo "#########################网络信息#########################"
INTERNET=(`ifconfig|grep ens|awk -F: '{print $1}'`)
for((i=0;i<`echo ${#INTERNET[*]}`;i++))
do 
  OS_IP=`ifconfig ${INTERNET[$i]}|head -2|grep inet|awk '{print $2}'`
  echo "      本机IP：${INTERNET[$i]}:$OS_IP"
done
curl -I http://www.baidu.com &>/dev/null
if [ $? -eq 0 ]
then echo "    访问外网：成功"
else echo "    访问外网：失败"
fi
}

function hardware(){

echo "#########################硬件信息#########################"
CPUID=`grep "physical id" /proc/cpuinfo |sort|uniq|wc -l`
CPUCORES=`grep "cores" /proc/cpuinfo|sort|uniq|awk -F: '{print $2}'`
CPUMODE=`grep "model name" /proc/cpuinfo|sort|uniq|awk -F: '{print $2}'`

echo "     CPU数量: $CPUID"
echo "     CPU核心:$CPUCORES"
echo "     CPU型号:$CPUMODE"

MEMTOTAL=`free -m|grep Mem|awk '{print $2}'`
MEMFREE=`free -m|grep Mem|awk '{print $7}'`

echo "  内存总容量: ${MEMTOTAL}MB"
echo "剩余内存容量: ${MEMFREE}MB"

disksize=0
swapsize=`free|grep Swap|awk {'print $2'}`
partitionsize=(`df -T|sed 1d|egrep -v "tmpfs|sr0"|awk {'print $3'}`)
for ((i=0;i<`echo ${#partitionsize[*]}`;i++))
do
disksize=`expr $disksize + ${partitionsize[$i]}`
done
((disktotal=\($disksize+$swapsize\)/1024/1024))

echo "  磁盘总容量: ${disktotal}GB"

diskfree=0
swapfree=`free|grep Swap|awk '{print $4}'`
partitionfree=(`df -T|sed 1d|egrep -v "tmpfs|sr0"|awk '{print $5}'`)
for ((i=0;i<`echo ${#partitionfree[*]}`;i++))
do
diskfree=`expr $diskfree + ${partitionfree[$i]}`
done

((freetotal=\($diskfree+$swapfree\)/1024/1024))

echo "剩余磁盘容量：${freetotal}GB"
}


function secure(){
echo "#########################安全信息#########################"

countuser=(`last|grep "still logged in"|awk '{print $1}'|sort|uniq`)
for ((i=0;i<`echo ${#countuser[*]}`;i++))
do echo "当前登录用户：${countuser[$i]}"
done
 
md5sum -c --quiet /opt/passwd.db &>/dev/null
if [ $? -eq 0 ]
then echo "    用户异常：否"
90 else echo "    用户异常: 是"
91 fi
92 }
93
94 function chksys(){
95 system
96 network
91 hardware
98 secure
99 }
100 system
101 network
102 hardware
103 secure

检测网站地址是否存活

#!/bin/bash
. /etc/init.d/functions
url_list=(www.tec.com www.stu.com)

function chkurl(){
i=0
while [ $i -lt 2 ]
do
  curl http://${url_list[$i]} &>/dev/null
  if [ $? -eq 0 ]
  then
    action "${url_list[$i]}" /bin/true
  else
    action "${url_list[$i]}" /bin/false
  fi
  let i++
done
}

function main(){
while true
do chkurl
   sleep 3
done
}
main