正文
nginx 的precontent阶段的ngx_http_try_files_module模块与mirrors模块介绍
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指令介绍
Syntax: try_files file ... uri;
try_files file ... =code;
Default: —
Context: server, location
依次试图访问多个URI对应得文件（由root或者alias指令指定），当文件存在时直接返回内容，如果所有文件不存在，则按最后一个URL结果或者code返回
server {
server_name try_files.com;
root html/;
default_type text/plain;
location /first {
try_files /system/maintenance.html #找磁盘文件；找不到磁盘文件是
$uri $uri/index.html $uri.html#找$URI也就是去找html/first有没有这个文件；匹配不到是；找first/下面有没index.html；
@lasturi; #最后匹配这个
}
location @lasturi {
return 200 'lasturi!\n';
}
location /second {
try_files $uri $uri/index.html $uri.html =404;
}
}
测试
[root@python vhast]# curl try_files.com/first
lasturi!
mirrors 模块流量拷贝
功能：处理请求时生成子请求对子请求的返回结果不做处理
指令
Syntax: mirror uri | off; #uri表示将请求复制到另一个地址
Default: mirror off;
Context: http, server, location
Syntax: mirror_request_body on | off; #mo
Default: mirror_request_body on;
Context: http, server, location
实现
[root@python vhast]# cat mirrors.conf
server {
server_name mirrors.com;
error_log logs/mirrors_error.log debug;
location /{
mirror /mirror;
mirror_request_body off;
}
location = /mirror {
internal; #指定为内部请求
proxy_pass http://127.0.0.1:10020$request_uri;
proxy_set_header Content-Length "";
proxy_set_header X-Original-URI $request_uri;
}
}[root@python vhast]# cat test-2.conf
server {
listen 10020;
location / {
return 200 "mirror response!";
}
}
测试
[root@python vhast]# echo "mirror" > ../../html/mirror.txt
[root@python vhast]# curl mirrors.com/mirror.txt
mirror
[root@python vhast]# tail ../../logs/access.log
127.0.0.1 - - [10/Jul/2019:11:56:22 +0800] "GET / HTTP/1.0" 200 16 "-" "curl/7.29.0"
192.168.183.4 - - [10/Jul/2019:11:56:22 +0800] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0"
127.0.0.1 - - [10/Jul/2019:11:59:07 +0800] "GET /mirror.txt HTTP/1.0" 200 16 "-" "curl/7.29.0"
192.168.183.4 - - [10/Jul/2019:11:59:07 +0800] "GET /mirror.txt HTTP/1.1" 200 7 "-" "curl/7.29.0"
127.0.0.1 - - [10/Jul/2019:11:59:08 +0800] "GET /mirror.txt HTTP/1.0" 200 16 "-" "curl/7.29.0"
192.168.183.4 - - [10/Jul/2019:11:59:08 +0800] "GET /mirror.txt HTTP/1.1" 200 7 "-" "curl/7.29.0"
127.0.0.1 - - [10/Jul/2019:11:59:09 +0800] "GET /mirror.txt HTTP/1.0" 200 16 "-" "curl/7.29.0"
192.168.183.4 - - [10/Jul/2019:11:59:09 +0800] "GET /mirror.txt HTTP/1.1" 200 7 "-" "curl/7.29.0"
127.0.0.1 - - [10/Jul/2019:12:30:55 +0800] "GET /mirror.txt HTTP/1.0" 200 16 "-" "curl/7.29.0"
192.168.183.4 - - [10/Jul/2019:12:30:55 +0800] "GET /mirror.txt HTTP/1.1" 200 7 "-" "curl/7.29.0"
