Nginx代理导致API 500错误的排查与修复指南

浏览器 localhost:9527/dev-api/Login/getStaticResource
    ↓ Vue devServer proxy (vue.config.js)
Nginx anyu-portal-frontend.test/api/Login/getStaticResource
    ↓ Nginx location /api/ proxy_pass (anyu-front.conf)
Nginx anyu-portal.test/Login/getStaticResource
    ↓ Nginx location ~ .php$ fastcgi_pass (anyu-portal.conf)
PHP-FPM anyu-portal/Public/index.php

proxy: {
  [process.env.VUE_APP_BASE_API]: {
    target: 'http://anyu-portal-frontend.test/api',
    changeOrigin: true,
    pathRewrite: {
      ['^' + process.env.VUE_APP_BASE_API]: ''
    }
  }
}

server {
    listen 80;
    server_name anyu-frontend.test *.anyu-frontend.test;
    root "/www/anyu-portal-frontend";
    location / {
        try_files $uri $uri/ /index.html;
    }
    location /api/ {
        proxy_set_header Host $http_x_forwarded_host;
        proxy_pass http://anyu-portal.test/;
    }
}

server {
    listen 80;
    server_name anyu-portal.test;
    root /www/anyu-portal/Public;
    if (!-e $request_filename) {
        rewrite ^(.*)$ /index.php?s=$1 last;
    }
    location ~ \.php$ {
        fastcgi_pass php:9000;
        include fastcgi-php.conf;
        include fastcgi_params;
    }
}

services:
  nginx:
    extra_hosts:
      - "openapi:127.0.0.1"
      - "lvs:127.0.0.1"
      - "admin:127.0.0.1"
      - "portal:127.0.0.1"
    # 缺少: anyu-portal.test:127.0.0.1

docker exec nginx curl -v http://anyu-portal.test/Login/getStaticResource

docker exec nginx curl -v http://anyu-portal-frontend.test/api/Login/getStaticResource

proxy_set_header Host $http_x_forwarded_host;

public function getStaticResource() {
    $server_name = SERVER_NAME;  // 依赖 $_SERVER['SERVER_NAME']
    $redis = new Redis();
    $redis->connect(C("REDIS_HOST"), C("REDIS_PORT"));
    // ...
    if(!C('PARTNER')) {
        $this->setPartner($redis, $server_name);  // 根据 server_name 获取合作伙伴
    }
    // ...
}

# 修改前
location /api/ {
    proxy_set_header Host $http_x_forwarded_host;
    proxy_pass http://anyu-portal.test/;
}
# 修改后
location /api/ {
    proxy_set_header Host anyu-portal.test;
    proxy_pass http://anyu-portal.test/;
}

services:
  nginx:
    extra_hosts:
      - "openapi:127.0.0.1"
      - "lvs:127.0.0.1"
      - "admin:127.0.0.1"
      - "portal:127.0.0.1"
      - "anyu-portal.test:127.0.0.1"  # 新增

docker exec nginx nginx -s reload

docker exec nginx curl -v http://anyu-portal-frontend.test/api/Login/getStaticResource

location /api/ {
    proxy_set_header Host $proxy_host;  # 使用 proxy_pass 中指定的主机名
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_pass http://backend/;
}