nginx配置如下

user  nginx;

worker_processes  auto;

error_log  /var/log/nginx/error.log notice;

pid        /var/run/nginx.pid;

events {

   worker_connections  1024;

}

http {

   include       /etc/nginx/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  /var/log/nginx/access.log  main;

   sendfile        on;

   #tcp_nopush     on;

   keepalive_timeout  65;

   #gzip  on;

   include /etc/nginx/conf.d/*.conf;

}

stream {

 upstream mqtt_servers {

   server mqtt_server1:60001 weight=1;

   server mqtt_server2:60002 weight=1;

   server mqtt_server3:60003 weight=1;

 }

 server {

   listen 1883;

   proxy_pass mqtt_servers;

 }

}

通过telnet命令测试 nginx到mqtt集群各服务是通的

但是客户端通过1883端口连接nginx连接失败