nginx配置示例

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通过nginx解决跨域访问，系统高可用等问题的配置文件示例。

worker_processes  1;events {    worker_connections  1024;}http {    include       mime.types;    default_type  application/octet-stream;    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '    #                  '$status $body_bytes_sent "$http_referer" '    #                  '"$http_user_agent" "$http_x_forwarded_for"';    #access_log  logs/access.log  main;    sendfile        on;    keepalive_timeout  65;    gzip  on;    # 通过upstream实现服务的高可用。    upstream ups_warnings {        server http://192.168.122.24:8083;        server http://192.168.122.25:8083 backup;    }    # 第一个server，监听80端口。    server {#   resolver dns.resolver;        listen       80;        server_name  localhost;        location / {            root   /usr/share/nginx/html;            index  index.html index.htm;        }        location ^~ /tags {            proxy_pass   http://192.168.122.23:80/tags;            proxy_set_header  X-Real-IP  $remote_addr;        }        location ^~ /warnings/ {            rewrite /warnings/(.+)$ /$1 break;            proxy_pass  http://ups_warnings;            proxy_set_header  X-Real-IP  $remote_addr;        }        error_page   500 502 503 504  /50x.html;        location = /50x.html {            root   html;        }    }    # 第二个server，监听81端口。    server {#   resolver dns.resolver;        listen       81;        server_name  localhost;        location / {            root   /usr/share/nginx/html;            index  index.html index.htm;        }        location ^~ /tags {            proxy_pass   http://192.168.122.23:80/tags;            proxy_set_header  X-Real-IP  $remote_addr;        }        location ^~ /warnings/ {            rewrite /warnings/(.+)$ /$1 break;            proxy_pass  http://ups_warnings;            proxy_set_header  X-Real-IP  $remote_addr;        }        error_page   500 502 503 504  /50x.html;        location = /50x.html {            root   html;        }    }}

注：当header中包含“_”的时候，nginx会致使header丢失。可以通过如下配置让nginx不过滤，但这种方式是不安全，且不推荐的。

ignore_invalid_headers on;underscores_in_headers on;

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