来自： http://blog.csdn.net//jiao_fuyou/article/details/40743735

nginx tcp代理功能由nginx_tcp_proxy_module模块提供，同时监测后端主机状态。该模块包括的模块有： ngx_tcp_module, ngx_tcp_core_module, ngx_tcp_upstream_module, ngx_tcp_proxy_module, ngx_tcp_upstream_ip_hash_module。

安装：

http://nginx.org/download/nginx-1.7.2.tar.gz  https://github.com/yaoweibin/nginx_tcp_proxy_module/archive/master.zip    #cd nginx-1.7.2  #patch -p1 < /home/jfy/soft/nginx_tcp_proxy_module-master/tcp.patch    ./configure --prefix=/usr/local/nginx     \    --with-debug                            \    --with-http_stub_status_module          \    --with-http_ssl_module                  \    --with-http_realip_module               \    --with-http_image_filter_module         \    --with-pcre=../pcre-8.21                \    --add-module=../ngx_devel_kit-0.2.19    \    --add-module=../lua-nginx-module-0.9.8  \    --add-module=../echo-nginx-module       \    --add-module=../redis2-nginx-module     \    --add-module=../set-misc-nginx-module   \    --add-module=../nginx_http_push_module-0.692 \    --add-module=../nginx_tcp_proxy_module-master

tcp {      timeout 1d;      proxy_read_timeout 10d;      proxy_send_timeout 10d;      proxy_connect_timeout 30;      upstream ssh_116 {          # simple round-robin          server 172.16.18.116:2014;          check interval=3000 rise=2 fall=5 timeout=1000;          #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello;          #check interval=3000 rise=2 fall=5 timeout=1000 type=http;          #check_http_send "GET / HTTP/1.0\r\n\r\n";          #check_http_expect_alive http_2xx http_3xx;      }      server {          listen 8014;          proxy_pass ssh_116;          so_keepalive on;          tcp_nodelay on;      }  }

http://yaoweibin.github.io/nginx_tcp_proxy_module/