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[Web] Detailed explanation of Nginx configuration logs

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Posted on 2020-4-10 16:03:15 | | |
Nginx is an asynchronous framework web server that can also be used as a reverse proxy, load balancer and HTTP caching.

Look at the configuration file that the nginx actually calls

1. Check the nginx path

The path to nginx is: /soft/nginx/sbin/nginx

2. View the nginx configuration file path
Use the -t parameter of nginx to perform a configuration check to know the actual file path and whether the call is valid.

It can be seen that the configuration file path of nginx is: /soft/nginx/nginx.conf and the call is valid.

nginx.conf log configuration

There are two main parameter controls for Nginx access logs

  • log_format ---- is used to define the format of the log logs (multiple log formats can be defined, just take different names)
  • access_log ----- is used to specify the path to the file and what log format is used to record the log


Default values for log_format:

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                     '"$http_user_agent" "$http_x_forwarded_for"';
Default values for access_log:

access_log  logs/access.log  main;
log_format syntax format and parameter syntax are described as follows:


access_log syntax format and parameter syntax are described as follows:


Detailed explanation of Nginx built-in variables and log format variable parameters

When the value recorded in the log file is "-", it is indicated as empty.





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