简单的例子

  1. server {
  2.     listen 80;
  3.     location / {
  4.         proxy_pass http://192.168.0.20:80;
  5.     }
  6. }

支持多站点的例子

  1. server {
  2.     listen 80;
  3.     location / {
  4.         proxy_set_header Host $host;
  5.         proxy_pass http://192.168.0.20:80;
  6.     }
  7. }

根据 location 转发到不同的服务器

当 proxy_pass 地址不带 URI 时，用户请求 URI 会原封不动地发送到后端。

  1. server {
  2.     listen 80;
  4.       # /foo/index.html -> http://foo.com/foo/index.html
  5.     location /foo/ {
  6.         proxy_set_header Host foo.com;
  7.         proxy_pass http://192.168.0.20:80;
  8.     }
  10.       # /bar/index.html -> http://bar.com/bar/index.html
  11.     location ~ /bar/ {
  12.         proxy_pass http://bar.com:80;
  13.     }
  14. }

当 proxy_pass 地址带上 URI时，用户请求 URI 中与 Location 所匹配的部分会被替换成 proxy_pass 的 URI。

  1. server {
  2.     listen 80;
  4.   # /foo/index.html -> http://foo.com/index.html
  5.   # /foo/ replace with /
  6.     location /foo/ {
  7.         proxy_set_header Host foo.com;
  8.         proxy_pass http://192.168.0.20:80/;
  9.     }
  11.   # /bar/me/index.html -> http://bar.com/bar-website/me/index.html
  12.   # /bar/ replace with /bar-website/
  13.     location /bar/ {
  14.         proxy_pass http://bar.com:80/bar-website/;
  15.     }
  16. }

If the proxy_pass directive is specified with a URI, then when a request is passed to the server, the part of a normalized request URI matching the location is replaced by a URI specified in the directive… more

后端服务器组

代理到的后端服务器可以有多台，此时使用服务器组，Nginx 默认采用 round-robin 的方式分派请求。

  1. upstream foo {
  2.     server 192.168.0.10:80;
  3.     server 192.168.0.20:80;
  4. }
  6. server {
  7.     listen 80;
  8.     server_name foo.com;
  10.     location / {
  11.         proxy_set_header Host $http_host;
  12.         proxy_set_header X-Real-IP $remote_addr;
  13.         proxy_set_header X-Forwarded-Proto $scheme;
  14.         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  15.         proxy_pass http://foo;
  16.     }
  17. }

Parameter value can contain variables. In this case, if an address is specified as a domain name, the name is searched among the described server groups, and, if not found, is determined using a resolver… more