java - 连接()失败(111 : Connection refused) while connecting to upstream. Java(SparkJava)亚马逊弹性

Question

尝试部署我的第一个应用程序(后端)。但是我遇到了 502 Bad Gateway 类型的错误。

2016/05/03 14:46:14 [error] 2247#0: *19 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.43.183, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:5000/", host: "myHost.eu-west-1.elasticbeanstalk.com"
2016/05/03 14:50:23 [error] 2566#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.8.36, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:5000/", host: "myHost.eu-west-1.elasticbeanstalk.com"
2016/05/03 14:55:04 [error] 2566#0: *61 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.43.183, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:5000/", host: "myHost.eu-west-1.elasticbeanstalk.com"

我将 SparkJava 用于我的后端框架，它在端口 4567 上启动。因此，我扩展了 Nginx (nginx/1.8.1) 的配置。但问题始终存在。

server {
    listen 4567 default_server;
    listen [::]:4567 default_server ipv6only=on;
}

供引用:我的后端与数据库(RDS aws amazon)通信

Answer 1

从您的日志:upstream: "http://127.0.0.1:5000/" 我看到，nginx 正在尝试连接到同一台机器上的 5000 端口，但它拒绝连接。什么在5000端口上运行？您可能需要调查一下。