标签：shell
21.新增端口监控
cat 21_port.sh
#!/bin/bash
#Usage:Judge new port
#Author:chengyanli
#Date:2016/7/20
#The history port
if [ ! -f port ]
then
netstat -antulp|awk ‘{print $4}‘|awk -F ‘:‘ ‘{print $NF}‘|sed ‘1,2d;/^$/d‘ |sort|uniq > ./port
fi
#The port at now
myarray=`netstat -antulp|awk ‘{print $4}‘|awk -F ‘:‘ ‘{print $NF}‘|sed ‘1,2d;/^$/d‘|sort|uniq`
for item in ${myarray}
do
cat ./port|grep ${item} > /dev/null
if [ ! $? -eq 0 ]
then
echo "A new port:${item} appear"
else
echo ‘no new port appear‘
break
fi
done
22.网卡版本查看
cat 22_interface.sh
#!/bin/bash
#Usage:check the interface
#Author:chengyani
#Date:2016/7/20
watch -n 1 "modinfo bnx2|grep version|sed ‘1!d‘"
23.测试主机连通性
cat 23.24_connect.sh
#!/bin/bash
#Usage:check the connect between host
#Author:chengyanli
#Date:2016/07/22
read -p ‘plz input a ip:‘ IP
nc -z -w 5 $IP 22 2&>/dev/null
if [ $? = 0 ]; then
echo ‘The connect of the host is ok‘
fi
25.查看磁盘io
cat 25_io.sh
#!/bin/bash
#Usage:monitor the io of disk
#Author:chengyanli
#Date:2016/7/15
#The local ip,device and mail
IP=`ip addr show|sed ‘8!d‘|awk ‘{print $2}‘|cut -f 1 -d ‘/‘`
Device=`iostat -d|sed ‘4!d‘|awk ‘{print $1}‘`
USER=742019722@qq.com
#The total_io,total_int and high_int
total_int=`iostat -d|sed ‘4!d‘|awk ‘{print $2}‘|awk -F ‘.‘ ‘{print $1}‘`
high_int=20
#Judge the total_io bigger than high_int and give an alarm
if [ ${total_int} -ge ${high_int} ]; then
echo "${IP} ${Device} total_io:${total_int}>=${high_int},plz do something"|mail -s ‘WARNING‘ ${USER}
fi
#The monitor
while true
do
iostat -d|sed ‘3!d‘
iostat -d|sed ‘4!d‘
echo
sleep 2
done
26.网卡流量监控
cat 26_IFflow.sh
#!/bin/bash
#Usage:monitor the flow of interface
#Author:chengyanli
#Date:2016/7/15
clear
#The active interface,local ip and mail
IF=`ifconfig -a|grep eth1|awk ‘{print $1}‘`
IP=`ip addr show|sed ‘8!d‘|awk ‘{print $2}‘|cut -f 1 -d ‘/‘`
USER=742019722@qq.com
#The total tx,total rx and high num
total_rate=`vnstat|sed ‘5!d‘|awk ‘{print $8}‘|awk -F ‘.‘ ‘{print $1}‘`
high_rate=200
#Judge total rate > high rate,if so,give an alarm
if [ ${total_rate} -ge ${high_rate} ];then
echo "${IP} ${IF} total_rate:${total_rate}>=${high_rate},plz do something"|mail -s ‘WARNING‘ ${USER}
fi
#The tx_rate rx_rate and total_rate
flow_rate=`vnstat|sed ‘5!d‘`
##The monitor
while true
do
echo ${flow_rate}
sleep 1
done
27.查看crontab是否正常工作
cat 31_cron.sh
#!/bin/bash
#Ssh remote host and update user passwd
file=`find / -name $user.sh$`
for ip in `cat /mnt/ip_only`
do
echo "00 03 * * */1 ssh ${ip} ‘sh ${file}‘" > /var/spool/cron
done
28.修改用密码
cat 31_user.sh
#!/bin/bash
#Usage:update user passwd
#Author
#Date:2016/07/30
passwd=`mkpasswd -l 10`
mkdir /md5 >/dev/null 2>&1
md5sum /etc/shadow > /md5/shadow.md5
pass(){
md5sum -c /md5/shadow.md5 >/dev/null 2>&1
if [ $? = 0 ];then
echo "${passwd}"|passwd --stdin tom >/dev/null 2>&1
if [ $? = 0 ];then
echo ‘passwd updated successfully‘
else
echo ‘passwd updated failed‘
fi
fi
}
29.查看系统信息
cat 34_sys.sh
#!/bin/bash
#Usage:HW Information
#Author:chengyanli
#Date:2016/7/20
#This is about cpu type
echo ‘The cpu type:‘
cat /proc/cpuinfo|grep name|awk ‘{print $5}‘
echo
#This is about mem type
echo ‘The mem type:‘
sudo dmidecode -t memory|type
echo
#This is about mem use
echo ‘The mem use:‘
free -m
echo
#This is about SN
echo ‘The SN:‘
dmidecode |grep -i serial|sed ‘4!d‘
echo
#This is about inet addr
echo ‘The inet addr:‘
ifconfig|grep ‘inet addr‘|sed ‘1!d‘|awk ‘{print $1,$2}‘
echo
#This is about mac addr
echo ‘The mac addr:‘
ifconfig|sed ‘1!d‘|awk ‘{print $4,$5}‘
echo
本文出自 “真水无香” 博客，请务必保留此出处http://chengyanli.blog.51cto.com/11399167/1846786
标签：shell
原文地址：http://chengyanli.blog.51cto.com/11399167/1846786
