#反向代理
nginx代理支持的协议
nginx作为反向代理常用协议
Nginx反向代理配置语法
代理配置语法
Syntax: proxy_pass URL;
Default: —
Context: location, if in location, limit_except
http://localhost:8000/uri/
http://192.168.56.11:8000/uri/
http://unix:/tmp/backend.socket:/uri/
| url跳转修改返回location |
url跳转修改返回Location[不常用]
参考下载站点：http://test.oldboy.com/Nginx_File/
Syntax: proxy_redirect default;
proxy_redirect off;proxy_redirect redirect replacement;
Default: proxy_redirect default;
Context: http, server, location
添加发往后端服务器的请求头信息
Syntax: proxy_set_header field value;
Default: proxy_set_header Host $proxy_host;
proxy_set_header Connection close;
Context: http, server, location
用户请求的时候HOST的值是www.oldboy.com, 那么代理服务会像后端传递请求的还是www.oldboy.com
proxy_set_header Host $http_host;
把remote_addr的值为客户端的ip
proxy_set_header X-Real-IP $remote_addr;
客户端通过代理服务访问后端服务, 后端服务通过该变量会记录真实客户端地址
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
代理到后端的TCP连接、响应、返回等超时时间
//nginx代理与后端服务器连接超时时间(代理连接超时)
Syntax: proxy_connect_timeout time;
Default: proxy_connect_timeout 60s;
Context: http, server, location
//nginx代理等待后端服务器的响应时间
Syntax: proxy_read_timeout time;
Default: proxy_read_timeout 60s;
Context: http, server, location
//后端服务器数据回传给nginx代理超时时间
Syntax: proxy_send_timeout time;
Default: proxy_send_timeout 60s;
Context: http, server, location
proxy_buffer代理缓冲区
//nignx会把后端返回的内容先放到缓冲区当中，然后再返回给客户端,边收边传, 不是全部接收完再传给客户端
Syntax: proxy_buffering on | off;
Default: proxy_buffering on;
Context: http, server, location
//设置nginx代理保存用户头信息的缓冲区大小
Syntax: proxy_buffer_size size;
Default: proxy_buffer_size 4k|8k;
Context: http, server, location
proxy_buffer代理缓冲区
//nignx会把后端返回的内容先放到缓冲区当中，然后再返回给客户端,边收边传, 不是全部接收完再传给客户端
Syntax: proxy_buffering on | off;
Default: proxy_buffering on;
Context: http, server, location
//设置nginx代理保存用户头信息的缓冲区大小
Syntax: proxy_buffer_size size;
Default: proxy_buffer_size 4k|8k;
Context: http, server, location
//proxy_buffers 缓冲区
Syntax: proxy_buffers number size;
Default: proxy_buffers 8 4k|8k;
Context: http, server, location
常用优化配置
Proxy代理网站常用优化配置如下，将配置写入新文件，调用时使用include引用即可
[root@Nginx ~]# vim /etc/nginx/proxy_params
proxy_set_header Host remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 30;
proxy_send_timeout 60;
proxy_read_timeout 60;
proxy_buffering on;
proxy_buffer_size 32k;
proxy_buffers 4 128k;
重复使用配置
代理配置location时调用方便后续多个Location重复使用
location / {
proxy_pass http://127.0.0.1:8080;
include proxy_params;
}