用shell脚本分析Nginx日志

本文中的shell脚本又分为两种情况,第一种情况是Nginx作为最前端的负载均衡器,其集群架构为Nginx+Keepalived时,脚本内容如下所示:

    vim log-nginx.sh  
    #!/bin/bash  
    if [$# -eq 0 ]; then  
      echo "Error: please specify logfile."  
      exit 0  
    else  
      LOG=¥1  
    fi  
    if [ ! -f $1 ]; then  
      echo "Sorry, sir, I can""t find this apache log file, pls try again!"  
    exit 0  
    fi  
 ################################
    echo "Most of the ip:"  
    echo "-------------------------------------------"  
    awk ""{ print $1 }""$LOG| sort| uniq -c| sort -nr| head -10  
    echo  
    echo  
################### 
    echo "Most of the time:"  
    echo "--------------------------------------------"  
    awk ""{ print $4 }""$LOG| cut -c 14-18| sort| uniq -c| sort -nr| head -10  
    echo  
    echo  
#######################
    echo "Most of the page:"  
    echo "--------------------------------------------"  
    awk ""{print $11}""$LOG| sed ""s/^.*\\(.cn*\\)\"/\\1/g""| sort| uniq -c| sort -rn| head -10  
    echo  
    echo  
#####################3  
    echo "Most of the time / Most of the ip:"  
    echo "--------------------------------------------"  
    awk ""{ print $4 }""$LOG| cut -c 14-18| sort -n| uniq -c| sort -nr| head -10 > timelog  
    for i in ""awk ""{ print $2 }"" timelog""  
    do  
      num=""grep $i timelog| awk ""{ print $1 }""""  
      echo "$i $num"  
      ip=""grep $i $LOG| awk ""{ print $1}""| sort -n| uniq -c| sort -nr| head -10""  
      echo "$ip"  
      echo  
    done  
    rm -f timelog

 

 

 

 

 

 

第二种情况是以Nginx作为Web端,置于LVS后面,这时要剔除掉LVS的IP地址,比如LVS服务器的公网IP地址(像203.93.236.141、203.93.236.145等)。这样可以将第一种情况的脚本略微调整一下,如下所示:

 

 

 

 

    #!/bin/bash  
    if [$# -eq 0 ]; then  
      echo "Error: please specify logfile."  
      exit 0  
    else  
      cat$1| egrep -v '203.93.236.141|145' > LOG  
    fi  
    if [ ! -f$1 ]; then  
      echo "Sorry, sir, I can't find this apache log file, pls try again!"  
    exit 0  
    fi  
    ###################################################  
    echo "Most of the ip:"  
    echo "-------------------------------------------"  
    awk '{ print$1 }' LOG| sort| uniq -c| sort -nr| head -10  
    echo  
    echo  
    ####################################################  
    echo "Most of the time:"  
    echo "--------------------------------------------"  
    awk '{ print$4 }' LOG| cut -c 14-18| sort| uniq -c| sort -nr| head -10  
    echo  
    echo  
    ####################################################  
    echo "Most of the page:"  
    echo "--------------------------------------------"  
    awk '{print$11}' LOG| sed 's/^.*\\(.cn*\\)\"/\\1/g'| sort| uniq -c| sort -rn| head -10  
    echo  
    echo  
    ####################################################  
    echo "Most of the time / Most of the ip:"  
    echo "--------------------------------------------"  
    awk '{ print$4 }' LOG| cut -c 14-18| sort -n| uniq -c| sort -nr| head -10 > timelog  
    for i in 'awk '{ print$2 }' timelog'  
    do  
      num='grep$i timelog| awk '{ print$1 }''  
      echo "$i$num"  
      ip='grep$i LOG| awk '{ print$1}'| sort -n| uniq -c| sort -nr| head -10'  
      echo "$ip"  
      echo  
    done  
    rm -f timelog 
        #!/bin/bash  
        if [$# -eq 0 ]; then  
          echo "Error: please specify logfile."  
          exit 0  
        else  
          cat$1| egrep -v '203.93.236.141|145' > LOG  
        fi  
        if [ ! -f$1 ]; then  
          echo "Sorry, sir, I can't find this apache log file, pls try again!"  
        exit 0  
        fi  
        ###################################################  
        echo "Most of the ip:"  
        echo "-------------------------------------------"  
        awk '{ print$1 }' LOG| sort| uniq -c| sort -nr| head -10  
        echo  
        echo  
        ####################################################  
        echo "Most of the time:"  
        echo "--------------------------------------------"  
        awk '{ print$4 }' LOG| cut -c 14-18| sort| uniq -c| sort -nr| head -10  
        echo  
        echo  
        ####################################################  
        echo "Most of the page:"  
        echo "--------------------------------------------"  
        awk '{print$11}' LOG| sed 's/^.*\\(.cn*\\)\"/\\1/g'| sort| uniq -c| sort -rn| head -10  
        echo  
        echo  
        ####################################################  
        echo "Most of the time / Most of the ip:"  
        echo "--------------------------------------------"  
        awk '{ print$4 }' LOG| cut -c 14-18| sort -n| uniq -c| sort -nr| head -10 > timelog  
        for i in 'awk '{ print$2 }' timelog'  
        do  
          num='grep$i timelog| awk '{ print$1 }''  
          echo "$i$num"  
          ip='grep$i LOG| awk '{ print$1}'| sort -n| uniq -c| sort -nr| head -10'  
          echo "$ip"  
          echo  
        done  
        rm -f timelog 
 

 

 

我们可以用此脚本分析文件名为www_tomcat_20110331.log的文件。[root@localhost 03]# sh counter_nginx.sh www_tomcat_20110331.log大家应该跟我一样比较关注脚本运行后的第一项和第二项结果,即访问我们网站最多的IP和哪个时间段IP访问比较多,如下所示:
  

    Most of the ip: 
    ------------------------------------------- 
      5440 117.34.91.54 
     9 119.97.226.226 
     4 210.164.156.66 
     4 173.19.0.240 
     4 109.230.251.35 
     2 96.247.52.15 
     2 85.91.140.124 
     2 74.168.71.253 
     2 71.98.41.114 
     2 70.61.253.194 
    Most of the time: 
    -------------------------------------------- 
     12 15:31 
     11 09:45 
     10 23:55 
     10 21:45 
     10 21:37 
     10 20:29 
     10 19:54 
     10 19:44 
     10 19:32 
     10 19:13

  如果对日志的要求不高,我们可以直接通过Awk和Sed来分析Linux日志(如果对Perl熟练也可以用它来操作),还可以通过Awstats来进行详细分析,后者尤其适合Web服务器和邮件服务器。另外,如果对日志有特殊需求的话,还可以架设专用的日志服务器来收集Linux服务器日志。总之一句话:一切看需求而定。

 

 

 

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