ngx_http_log_module 实例

log_format  gzip  '$remote_addr - $remote_user [$time_local]  '
: '"$request" $status $bytes_sent '
: '"$http_referer" "$http_user_agent" "$gzip_ratio"';
access_log  /spool/logs/nginx-access.log  gzip  buffer=32k;


  • access_log
  • log_format


语法:*access_log path [format [buffer=size | off ] 默认值:access_log log/access.log combined*

作用域:*http, server, location*

指令 access_log 指派路径、格式和缓存大小。参数 "off" 将清除当前级别的所有 access_log 指令。如果未指定格式,则使用预置的 "combined" 格式。缓存不能大于能写入磁盘的文件的最大大小。在 FreeBSD 3.0-6.0 ,缓存大小无此限制。


语法:*log_format name format [format ...]*

默认值:*log_format combined "..."*


Directive log_format describes the format of a log entry. Besides general variables in the format it is possible to use variables which exist only at the moment of record into the log:

  • $body_bytes_sent, the number of bytes, transmitted to client minus the response headers, variable is compatible with parameter %B of module Apache's mod_log_config (this was called $apache_bytes_sent, before version 0.3.10)
  • $bytes_sent, the number of bytes, transmitted to client
  • $connection, the number of connection
  • $msec, the time with an accuracy to microseconds at the moment of the log entry
  • $pipe, "p" if request was pipelining
  • $request_length, the length of the body of the request
  • $request_time, the time of working on request in seconds
  • $status, status of answer
  • $time_local, local time into common log format.

The headers, transmitted to client, begin from the prefix "senthttp", for example, $sent_http_content_range.

In the configuration there is always a predetermined format "combined":

log_format  combined  '$remote_addr - $remote_user [$time_local]  '
: '"$request" $status $apache_bytes_sent '
: '"$http_referer" "$http_user_agent"';