我是Nginx的新手.

我想用Nginx做的是流量负载平衡.为此,我配置了nginx.conf,如下所示

系统结构

      udp        udp
    A <--> Nginx <--> Backend 1
                 <--> Backend 2

nginx.conf

user  nginx;
worker_processes  4;
worker_rlimit_nofile 30000;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

stream {
upstream udp_upstreams {
   server 1:1:1:1:9997 fail_timeout=60s;
   server 1:1:1:2:9997 fail_timeout=60s;
}

server {
    listen 9000 udp;
    proxy_pass udp_upstreams;
    proxy_timeout 3s;
    proxy_responses 1;
    error_log /var/log/nginx/udp.log;
}
}

events {
    worker_connections  10240;
}

当我运行nginx时,nginx打印了很多以下消息.

2016/04/27 04:50:36 [alert] 3137#3137: *446352 10240 worker_connections are not enough while connecting to upstream, udp client: 3.3.3.3, server: 0.0.0.0:9000, upstream: "1.1.1.2:9997", …