[转帖]查看请求在nginx中消耗的时间

查看,请求,nginx,消耗,时间 · 浏览次数 : 0

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```nginx # Add log_format directive log_format test '$remote_addr - $remote_user [$time_local] \"$request\" ' '$status $body_bytes_sent $request_body \"$http_referer\" ' '\"$http_user_agent\" \"$http_x_forwarded_for\"' '$upstream_addr $upstream_response_time $request_time '; # Add access_log directive access_log logs/test.log test; # Analyze and extract the data cat test.log | grep url | awk '{print $6 " " $7 " " $8 " " $11 " " ($NF-$(NF-1))}' > c.txt ``` **Explanation:** 1. **log_format directive**: This directive defines a custom log format named "test". The format uses a series of placeholders to represent various variables, including remote address, user, request time, status code, request body, referer, user agent, forwarded for, upstream address, response time, and request time. 2. **access_log directive**: This directive specifies an access log called "test" for the "test" log format. 3. **cat command**: This command reads the "test.log" file and filters the output to extract lines containing the word "url". 4. **awk script**: The "awk" script processes the extracted lines and prints the following information for each match: - Remote address - Remote user - Request time - Status code - Request body size - Referer - User agent - Forwarded for address - Upstream address and response time - Request time 5. **> c.txt**: This command redirects the output of the "awk" script to a file named "c.txt". 6. **Output summary**: The script will generate a file named "c.txt" containing a summary of the requests that took the longest time to process. Each line in this file will represent the URL, request time, and the corresponding user agent and response time.

正文

需求：查看请求在nginx中消耗的时间，不包括程序响应时间。

1.声明日志的格式，在nginx配置文件nginx.conf里的http下添加如下内容：


log_format test '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent $request_body "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"'
                     '$upstream_addr $upstream_response_time $request_time ';

2.在需要日志的server下添加：

access_log logs/test.log test;

3.分析nginx的日志，查出需要查看消耗时间的url，用$request_time减掉$upstream_response_time。

cat test.log | grep url | awk '{print $6 " " $7 " " $8 " " $11 " " ($NF-$(NF-1))}' > c.txt