How Nginx uses scripts to analyze logs

What this article shares with you is Nginx's method of using scripts to analyze logs. I believe most people have not yet learned this skill. In order to let you learn, I have summarized the following content for you. Here is the code for log analysis scripts.

Vim / data/scripts/log_analysis.sh

#! / bin/bash### Desc: nginx log analysis script # # Author: Bertram # # Date: 2019-12-21 # # Copyright: Personal belongs # # Public () {echo "" read-p "Please enter the access log to analyze:" log_file echo "" if [!-f $log_file] Then echo "not found: ${log_file}" exit 1 fi if [!-s $log_file] Then echo "${log_file} is an empty file" exit 1 fi # outputs the top top_num entries of log visits Customizable top_num=5 input_file= `echo $log_file | awk-F'/'{print $(NF)} '`analyze_dir=/home/Bertram/ `date +% F` top_ip_file=$analyze_dir/ngx_log_top_ip_$ {input_file} .txt top_src_url_file=$analyze_dir/ngx_log_top_src_url_$ {input_file} .txt top_dest_url_file=$analyze_dir/ngx_log_top_dest_ Url_$ {input_file} .txt top_code_file=$analyze_dir/ngx_log_top_code_$ {input_file} .txt top_terminal_file=$analyze_dir/ngx_log_top_terminal_$ {input_file} .txt mkdir-p $analyze_dir start_time= `head-1 $log_file | awk'{print $4}'| cut-d "["-f2`end_time= `tail-1 $log_file | awk'{print $4}'| cut-d "["-f2` Total_nums= `wc-l $log_file | awk'{print $1} '`size= `du-sh $log_file | awk' {print $1}'`# get start and end time echo "access start time: $start_time Deadline: $end_time "# get total number of rows and size echo" total visits $total_nums Log size: $size "# get the most active IP # # cat $log_file | awk'{print $1}'| sort | uniq-c | sort-rn | head-${top_num} > $top_ip_file awk'{ips [$1] +} END {for (i in ips) {print ips [I] I}'$log_file | sort | uniq-c | sort-K1-nr | head-${top_num} > $top_ip_file # get the url cat $log_file with the most access sources | awk'{print $13}'| sort | uniq-c | sort-rn | head-${top_num} > $top_src_url_file # get the url cat $log_file with the most requests | awk'{print $8}'| sort | uniq-c | sort-rn | | head-${top_num} > $top_dest_url_file # get the most returned status codes cat $log_file | awk'{print $11}'| sort | uniq-c | sort-rn | head-${top_num} > $top_code_file # get the most returned terminal types cat $log_file | awk'{print $14}'| sort | uniq-c | sort-rn | head-${top_num} > $top_terminal | _ file} simple () {echo "+-+-the following is the analysis content +-+ -" # get the most active IP printf "the first ${top_num} visit IP:\ n" cat $top_ip_file echo "" # get the most access sources url printf "the first ${top_ with the most access sources Num} url:\ n "cat $top_src_url_file echo"# get the first ${top_num} url with the most requests:\ n" cat $top_dest_url_file echo "" # get the most returned status codes printf "return the most first ${top_num} status codes:\ n" cat $top_code_file echo "" Printf "# get the most returned terminal numbers printf" returns the most first ${top_num} terminal numbers:\ n "cat $top_terminal_file echo"printf"printf" returns the first ${top_num} IP cities (query time is a bit slow) Wait patiently! ):\ n "echo 'printf"%-15s%-15s%-30s\ n "number of visits", "IP address", "place" echo "-' astat0 cat $analyze_dir/ngx_log_top_ip_$ {input_file} .txt | while read line do ip=$ (echo $line | cut-d'"- f2) count=$ (echo $line | cut-d'"-F1) printf "%-10s%-15s%-30s\ n" $count $ip $(curl-s "http://freeapi.ipip.net/$(echo $line | cut-d'"-f2) "| awk-F'\" {'print $2 "-" $4 "-" $6'}) echo'- 'let a=a+1 done echo "" printf "} case $1 in help) echo" echo-e $"Usage: $0 enter a log file\ n" ; *) public simple;; esacexit 0

Implement the function:

1. Analyze the ip addresses of the top N

2. Analyze and visit the top N url

3. Analyze the target url of the top N

4. Analyze the terminal types that visit the top N

5. Automatically match the belonging place of the top N ip.

Note: log files and analysis scripts can be placed in one directory; log files enter absolute paths.

Usage:

This is how Nginx uses scripts to analyze logs. The code example is simple and straightforward, if you encounter this problem in your daily work. Through this article, I hope you can get something. For more details, please follow the industry information channel!