流量监控脚本

公司有台服务器每天晚上流量很高,但是不知道确定是到哪个IP的流量
把改脚本定时到晚上执行
 1 #!/bin/sh
 2 nic='em1'
 3 myFile=$nic'monitor'
 4 #iftop -P -n -N -t -B -L100 -s10 -i $nic | grep -Ev 'Listening| Host|Total|total' | sed -e 's/=>//g' -e 's/<=//g' | grep -Ev '=|-' | sed -e 's/ [0-9]{1,3} //g' | sort -t'.' -k1,1n -k2,2n -k3,3n -k4,4n > $nic
 5 if [ ! -f "$myFile" ];
 6 then
 7     touch $myFile
 8 fi
 9 function KMG ()
10 {
11         MB=`echo $1 |grep -Eo 'KB|MB|GB|B'`
12         NUM=`echo $1 |sed -e 's/K|G|M|B//g'`
13         if [ "$MB"x = "KB"x ];then
14             z=`echo $NUM | awk '{printf ("%.2f
",$1 *1024)}'`
15         elif [ "$MB"x = "MB"x ];then
16             z=`echo $NUM | awk '{printf ("%.2f
",$1 *1024*1024)}'`
17         elif [ "$MB"x = "GB"x ];then
18             z=`echo $NUM | awk '{printf ("%.2f
",$1 *1024*1024*1024)}'`
19         else
20             z=`echo $NUM`
21         fi
22         
23         echo $z
24         
25 }
26 while true
27 do
28 
29     iftop -P -n -N -t -B -L1000 -s10 -i $nic | grep -Ev 'Listening| Host|Total|total' | sed -e 's/=>//g' -e 's/<=//g' | grep -Ev '=|-' | sed -e 's/ [0-9]{1,3} //g' | sort -t'.' -k1,1n -k2,2n -k3,3n -k4,4n > $nic && echo `date "+%Y-%m-%d %H:%M:%S"`
30     ip=`cat $nic | awk '{print $1}'`
31     for i in ${ip[@]}
32     do
33             #iftop获取到的当前值,并判断是否有冒号(没有冒号会导致将有冒号的值也会计算)
34             t=`echo $i | grep -Eo ':'`
35             if [ "$t"x = ":"x ];then
36                 B=`grep -w $i $nic | awk '{print $5}'`
37                 #echo "1" $i $B
38             else
39                 B=`grep -w $i $nic | grep -v ':' |awk '{print $5}'`
40                 #echo "2" $i $B
41             fi
42             
43             #循环当前的值
44             for flow in ${B[@]}
45             do
46                 A=`KMG $flow`
47                 
48                 #判断是否有冒号
49                 
50                 if [ "$t"x = ":"x ];then
51                     #判断是否已经存在值，不存在直接写入
52                     #echo "1" $i $A
53                     if grep -wq $i $myFile;then
54                         KMGNUM=`grep -w $i $myFile | awk '{printf ("%.2f
",$2 + A)}' A="$A"`
55                         #echo '1' `grep $i $myFile`
56                         sed -i "/$i/d" $myFile && echo $i $KMGNUM >> $myFile
57                         #echo '2' `grep $i $myFile`
58                         #echo $i $KMGNUM
59                         #echo "A" $i $A
60                     else
61                         echo $i $A >> $myFile #&&echo "B" $i $A
62                     fi
63                 else
64                     #判断是否已经存在值，不存在直接写入
65                     #echo "2" $i $A
66                     if grep $i $myFile | awk '{print $1}' | grep -v ':' | grep -q $i;then
67                         KMGNUM=`grep -w $i $myFile | grep -v ':' | awk '{printf ("%.2f
",$2 + A)}' A="$A"`
68                         #echo '1' `grep $i $myFile| grep -v ':'`
69                         sed -i "/$i /d" $myFile && echo $i $KMGNUM >> $myFile
70                         #echo '2' `grep $i $myFile| grep -v ':'`
71                         #echo $i $KMGNUM
72                         #echo "A" $i $A
73                     else
74                         echo $i $A >> $myFile #&& echo "B" $i $A
75                         #echo $i $A
76                     fi
77                 fi
78             done
79         done
80 done
81 
82
使用方法
cat *monitor | sort -t ' ' -k2.1nr | sed -n '1,10p' | awk '{print $1,$2 /1024/1024 }'