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我的 CentOS 7 服务器上安装了 nginx 版本 1.19.3。我的 Rocketchat 应用程序在端口 3000、3001 和 3002 上工作。但是我的 nginx 服务器无法将代理路由到 Rocketchat。它给了我 502 Bad Gateway 错误。

这是我的 default.conf

# Upstreams
upstream backend {
    least_conn;
    server [::1]:3000 max_fails=3 fail_timeout=30s;
    server [::1]:3001 max_fails=3 fail_timeout=30s;
    server [::1]:3002 max_fails=3 fail_timeout=30s;
}

# HTTPS Server
server {
    listen 443 ssl http2;
    server_name example.com;
    error_log /var/log/nginx/rocketchat.access.log;
    ssl_certificate /etc/nginx/certs/example.com.crt;
    ssl_certificate_key /etc/nginx/certs/example.com.key;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # don’t use SSLv3 ref: POODLE
    location / {
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Nginx-Proxy true;
        proxy_read_timeout 5m;
        proxy_pass http://backend;
        proxy_redirect off;
    }
}

这是我遇到的错误/var/log/nginx/rocketchat.access.log

2020/10/21 16:08:23 [error] 12532#12532: *25 no live upstreams while connecting to upstream, client: local-ip-address, server: example.com, request: "GET /favicon.ico HTTP/2.0", upstream: "http://backend/favicon.ico", host: "example.com", referrer: "https://example.com/"

我启用了 3000、3001、3002 并且可以通过本地 IP 地址访问 RocketChat。

我已经尝试了通过 stackoverfollow 找到的所有解决方案，但它不起作用。有人可能是什么问题吗？

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2 回答 2

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通过在上游工作中将 keepalive 设置为 8 对我有用。

# Upstreams
upstream backend {
    least_conn;
    server [::1]:3000 max_fails=3 fail_timeout=30s;
    server [::1]:3001 max_fails=3 fail_timeout=30s;
    server [::1]:3002 max_fails=3 fail_timeout=30s;
    keepalive 8;

}
于 2020-10-21T15:35:51.300 回答
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您的 Rocketchat 应用程序是否在 IPv6 本地主机地址 ::1 或 IPv4 127.0.0.1 上运行/可访问？

于 2020-10-21T12:23:28.457 回答