【Nginx】 location rewrite 调试神器
rewrite_log指令
由ngx_http_rewrite_module模块提供的。用来记录重写日志的。对于调试重写规则建议开启。 Nginx重写规则指南
语法: rewrite_log on | off;
默认值: rewrite_log off;
配置段: http, server, location, if
启用时将在error log中记录notice级别的重写日志。
error_log指令
语法: error_log file | stderr | syslog:server=address[,parameter=value] [debug | info | notice | warn | error | crit | alert | emerg];
默认值: error_log logs/error.log error;
配置段: main, http, server, location
配置错误日志。
调试nginx中rewrite跳转神器：
开启rewrite_log开关，并配置error_log，格式如下，注意最后是：notice级别
rewrite_log on;
error_log /home/work/logs/nginx/zy_test_nginx_error.log notice;
例如：nginx配置文件部分配置如下：
error_log /home/work/logs/nginx/zy_test_nginx_error.log notice;
rewrite /1.html /3.html last;
rewrite /b.html /2.html last;
location /2.html
{
rewrite /3.html /a.html last;
rewrite /2.html /1.html last;
return 444;
}
访问url：http://testnginx.fzsf.com/b.html
error_log中的日志如下：
2021/03/19 09:45:03 [notice] 11139#0: *2601235 "/1.html" does not match "/b.html", client: 172.19.36.61, server: testnginx.fzsf.com, request: "GET /b.html HTTP/1.1", host: "testnginx.fzsf.com"
2021/03/19 09:45:03 [notice] 11139#0: *2601235 "/b.html" matches "/b.html", client: 172.19.36.61, server: testnginx.fzsf.com, request: "GET /b.html HTTP/1.1", host: "testnginx.fzsf.com"
2021/03/19 09:45:03 [notice] 11139#0: *2601235 rewritten data: "/2.html", args: "", client: 172.19.36.61, server: testnginx.fzsf.com, request: "GET /b.html HTTP/1.1", host: "testnginx.fzsf.com"
2021/03/19 09:45:03 [notice] 11139#0: *2601235 "/3.html" does not match "/2.html", client: 172.19.36.61, server: testnginx.fzsf.com, request: "GET /b.html HTTP/1.1", host: "testnginx.fzsf.com"
2021/03/19 09:45:03 [notice] 11139#0: *2601235 "/2.html" matches "/2.html", client: 172.19.36.61, server: testnginx.fzsf.com, request: "GET /b.html HTTP/1.1", host: "testnginx.fzsf.com"
2021/03/19 09:45:03 [notice] 11139#0: *2601235 rewritten data: "/1.html", args: "", client: 172.19.36.61, server: testnginx.fzsf.com, request: "GET /b.html HTTP/1.1", host: "testnginx.fzsf.com"
从上述日志记录可见，b.html匹配规则：
rewrite /b.html /2.html last;
重写至2.html，继续匹配location /2.html 中的 第二条rewrite规则：rewrite /2.html /1.html last;
重写至1.html，由于结尾是last，因此，并没有返回444，而是最终返回1.html中的信息
