nginx 配置nginx.conf，负载均衡，逻辑分流

nginx 最重要的配置文件nginx.conf:
一般的配置我不做解释，网上到处都是，主要对主要的几点进行注释（如下）
worker_processes  8;

error_log     /data/logs/nginx_error.log  crit;


worker_rlimit_nofile 655350;


events {
        use epoll;
        worker_connections      10240;
}


http {


sendfile on;
#tcp_nopush on; //这是不作缓冲数据的设置，对于play framework这种需要宽进快出的web-server construction 需要屏蔽掉
#tcp_nodelay on;//同上
keepalive_timeout 65;//超时时间
types_hash_max_size 2048;
limit_zone one $binary_remote_addr 10m;
client_max_body_size 30m;


include mime.types;
default_type  application/octet-stream;


        access_log    /data/logs/access.log;

//以下是压缩相关配置
gzip on;
gzip_min_length 1000;
gzip_buffers 4 8k;
gzip_types text/plain application/x-javascript text/css application/xml;


upstream web {
server 127.0.0.1:8080;
}

//定义一组服务器
upstream api {
server 127.0.0.1:9000;
                server 127.0.0.1:9003;
}

//定义一组服务器
        upstream api1 {
               server 10.200.57.155:9000;
      server 127.0.0.1:9004;
      }

//.....
upstream admin {
server 127.0.0.1:9002;
}

.......

//监听端口
server {
listen 443;
ssl on;
ssl_certificate /etc/ssl/cacert.pem;
ssl_certificate_key /etc/ssl/privkey.pem;
server_name api.fastooth.com;


location / {
   proxy_set_header   Host             $host;
   proxy_set_header   X-Real-IP        $remote_addr;
   proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
   proxy_set_header   Refer        $http_referer;

//根据请求的url进行分流，可以直接进行返回http status
              if ( $uri ~* (.*)(location) ) {
                   return 200;
                   break;
                }
//根据请求的url进行分流，选择不同的服务器
               if ( $uri ~* (.*)(dealMessage) ) {
                    proxy_pass http://api1;
                }


if ( $uri ~* (.*)(runLog) ) {
                    proxy_pass http://api1;
                }


   proxy_pass http://api;
                   proxy_pass https://223.4.174.21;
}
}


}