详解nginx 代理多个服务器(多个server方式)

上一篇文章介绍了nginx的基本配置和使用方法，并且简单的介绍了一下如何利用nginx结合tomcat进行使用，达到反向代理的作用。现在我们要使用nginx达到这样的一个目的，能够代理多个服务器。

首先修改配置文件：

#user nobody;
worker_processes 1; 

#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info; 

#pid  logs/nginx.pid; 

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;
 #tcp_nopush  on; 

 #keepalive_timeout 0;
 keepalive_timeout 65; 

 #gzip on; 

 server {
  listen  9922;
  server_name firstProxyServer; 

  #charset koi8-r; 

  #access_log logs/host.access.log main; 

  #location / {
   #root html;
   #index index.html index.htm;
  #}
  location / {
   proxy_pass http://localhost:8989;
  } 

  #error_page 404    /404.html; 

  # redirect server error pages to the static page /50x.html
  #
  error_page 500 502 503 504 /50x.html;
  location = /50x.html {
   root html;
  } 

  # proxy the PHP scripts to Apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  # proxy_pass http://127.0.0.1;
  #} 

  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  # root   html;
  # fastcgi_pass 127.0.0.1:9000;
  # fastcgi_index index.php;
  # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
  # include  fastcgi_params;
  #} 

  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  # deny all;
  #}
 } 

  server {
  listen  9977;
  server_name secondProxyServer; 

  #charset koi8-r; 

  #access_log logs/host.access.log main; 

  #location / {
   #root html;
   #index index.html index.htm;
  #}
  location / {
   proxy_pass http://localhost:8080;
  } 

  #error_page 404    /404.html; 

  # redirect server error pages to the static page /50x.html
  #
  error_page 500 502 503 504 /50x.html;
  location = /50x.html {
   root html;
  } 

  # proxy the PHP scripts to Apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  # proxy_pass http://127.0.0.1;
  #} 

  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  # root   html;
  # fastcgi_pass 127.0.0.1:9000;
  # fastcgi_index index.php;
  # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
  # include  fastcgi_params;
  #} 

  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  # deny all;
  #}
 } 

 # another virtual host using mix of IP-, name-, and port-based configuration
 #
 #server {
 # listen  8000;
 # listen  somename:8080;
 # server_name somename alias another.alias; 

 # location / {
 #  root html;
 #  index index.html index.htm;
 # }
 #} 

 # HTTPS server
 #
 #server {
 # listen  443 ssl;
 # server_name localhost; 

 # ssl_certificate  cert.pem;
 # ssl_certificate_key cert.key; 

 # ssl_session_cache shared:SSL:1m;
 # ssl_session_timeout 5m; 

 # ssl_ciphers HIGH:!aNULL:!MD5;
 # ssl_prefer_server_ciphers on; 

 # location / {
 #  root html;
 #  index index.html index.htm;
 # }
 #} 

}

其中主要的是有两个server，每个server对应的被代理的服务器的不同。从而实现了nginx代理多个服务器的目的。

下面是两个服务server的配置：

server {
  listen  9922;
  server_name firstProxyServer; 

  #charset koi8-r; 

  #access_log logs/host.access.log main; 

  #location / {
   #root html;
   #index index.html index.htm;
  #}
  location / {
   proxy_pass http://localhost:8989;
  } 

  #error_page 404    /404.html; 

  # redirect server error pages to the static page /50x.html
  #
  error_page 500 502 503 504 /50x.html;
  location = /50x.html {
   root html;
  } 

  # proxy the PHP scripts to Apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  # proxy_pass http://127.0.0.1;
  #} 

  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  # root   html;
  # fastcgi_pass 127.0.0.1:9000;
  # fastcgi_index index.php;
  # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
  # include  fastcgi_params;
  #} 

  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  # deny all;
  #}
 } 

  server {
  listen  9977;
  server_name secondProxyServer; 

  #charset koi8-r; 

  #access_log logs/host.access.log main; 

  #location / {
   #root html;
   #index index.html index.htm;
  #}
  location / {
   proxy_pass http://localhost:8080;
  } 

  #error_page 404    /404.html; 

  # redirect server error pages to the static page /50x.html
  #
  error_page 500 502 503 504 /50x.html;
  location = /50x.html {
   root html;
  } 

  # proxy the PHP scripts to Apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  # proxy_pass http://127.0.0.1;
  #} 

  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  # root   html;
  # fastcgi_pass 127.0.0.1:9000;
  # fastcgi_index index.php;
  # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
  # include  fastcgi_params;
  #} 

  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  # deny all;
  #}
 }

下面是测试的结果：

首先两个tomcat中部署两个服务器：

然后启动nginx。

cmd下：start nginx

分别访问这两个server：

http://localhost:9922/ngtt/

http://localhost:9977/testnnnn/

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