(4) Nginx: Log and timing cut Log small example

A about Nginx log

We observe the nginx.conf in the Nginx installation directory

You can see similar information like this

#access_log Logs/host.access.log Main;

This indicates that the server, its access log file is Logs/host.access.log,

Format used for "main" format.

In addition to the main format, you can customize other formats.

What is the main format?

Log_format Main ' $remote _addr-$remote _user [$time _local] "$request" '

# ' $status $body _bytes_sent ' $http _referer '

# ' "$http _user_agent" "$http _x_forwarded_for" ';

The main format is that we define a log format and name it for easy reference.

In the above example, the main type of log, record the remote_addr .... http_x_forwarded_for options.

1: Log format refers to which options are recorded

Default log format: Main

Log_format Main ' $remote _addr-$remote _user [$time _local] "$request" '

' $status $body _bytes_sent ' $http _referer '

' "$http _user_agent" "$http _x_forwarded_for";

As the default main log format, record so many items

Remote ip-remote user/User Time request method (such as get/post) request Body Body length Referer source information

Http-user-agent user agent/Spider, the original IP of the forwarded request

Http_x_forwarded_for: In the agent, the agent to add your original IP in this header information, transfer your raw IP

2 Configuration Log Format Small example

Configured as follows

Post-Visit results

2nd Log Cutting

Cutting reason: If a website visit is particularly large, the daily Access_log file has 2 G, if you want to find information from the file, the light is very slow to open,

Do log cutting, easy to maintain.

Requirement Description: Create a New Day folder for each day's log, and place the same day file in the appropriate folder by one file per minute.

The shell script (splitlog.sh) is written as follows:

#这里是每分钟切割一次日志的shell脚本
#!/bin/bash
base_path= '/usr/local/software/ngnix/install/logs ' #定义log基本路径变量
time=$ (date-d yesterday + "%y-%m-%d_%h-%m-%s")   #时间定义 (format: 2016-10-09_23-46-25)
modify_file_name= "$ Time.access.log "#修改的log文件名
today=$ (date-d today +%y%m%d"), #今天时间 20161010 
today_folder= "$base _path/$today "; #今天的文件夹
#如果今天文件夹不存在, recreate an
if [!-d "$today _folder"];
Then
  mkdir $today _folder
fi
mv $base _path/access.log $today _folder/$modify _file_name #修改名字
KILL-USR1 ' Cat/usr/local/software/ngnix/install/logs/nginx.pid ' #平滑关闭nginx for easy log Cutting

Timed execution of the shell

CRONTAB-E Edit Contab Command

*/1 * * * */usr/local/software/ngnix/install/script/splitlog.sh Specify execution time

Result diagram