（111：连接被拒绝）连接到上游时，客户端

Question

我正在尝试在 elastic beanstalk 上设置一个 Nodejs/Express api，但我对此还很陌生。

我在 error.log 中收到此消息：

2019/10/02 17:04:17 [error] 5515#0: *15 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.51.86, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8081/favicon.ico", host: "news-arg-backend-dev.us-west-2.elasticbeanstalk.com", referrer: "http://news-arg-backend-dev.us-west-2.elasticbeanstalk.com/teams"
2019/10/02 17:04:18 [error] 5515#0: *15 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.51.86, server: , request: "GET /teams HTTP/1.1", upstream: "http://127.0.0.1:8081/teams", host: "news-arg-backend-dev.us-west-2.elasticbeanstalk.com"
2019/10/02 17:04:19 [error] 5515#0: *15 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.51.86, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8081/favicon.ico", host: "news-arg-backend-dev.us-west-2.elasticbeanstalk.com", referrer: "http://news-arg-backend-dev.us-west-2.elasticbeanstalk.com/teams"
2019/10/02 17:04:20 [error] 5515#0: *15 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.51.86, server: , request: "GET /teams HTTP/1.1", upstream: "http://127.0.0.1:8081/teams", host: "news-arg-backend-dev.us-west-2.elasticbeanstalk.com"

我认为它可能与这个问题有关，但我不完全确定：连接到上游时 connect() 失败（111：连接被拒绝）

编辑：这是我的 nginx.conf

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       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  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       8080;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
 /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }

编辑：我之前应该更具体一些。

这是一个 express/Node.js api，用于连接到托管 mongo 数据库的外部 ec2 服务器。我正在尝试连接到 elastic beanstalk 服务器上的节点 api，该 api 将从 mongo 数据库返回 json 数据。

当我尝试连接到端点 /teams 或域下的任何内容时，我收到网关 502 错误。