<!-- Generated by SpecStory -->

# Nginx configuration and upstream timeout issue (2025-05-31 19:40:04)

_**User**_

version: '3.8'

services:
  nginx-ui:
    image: uozi/nginx-ui:latest
    container_name: nginx-ui
    restart: always
    environment:
      - TZ=Asia/Shanghai
    volumes:
      # Nginx 配置文件目录
      - ./nginx:/etc/nginx
      # Nginx UI 配置目录
      - ./nginx-ui:/etc/nginx-ui
      # 网站文件目录（可选，用于托管静态文件）
      - ./www:/var/www
      # Docker socket（用于管理其他容器，可选）
      - /var/run/docker.sock:/var/run/docker.sock
    ports:
      # HTTP 端口
      - "80:80"
      # HTTPS 端口
      - "443:443"
      # Nginx UI 管理界面端口
      - "29000:9000"
    networks:
      - nginx-network

networks:
  nginx-network:
    driver: bridge

volumes:
  nginx-config:
  nginx-ui-config:
  www-data:

这是我的 docker compose 文件。
我还有其他的 docker container。例如docker 地址为172.21.0.2:9000 的容器

我使用 bash 进入 nginx 容器中，curl 172.21.0.2:9000，可以访问另一个 container。我现在使用 nginx config 写

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}
map $remote_addr $proxy_forwarded_elem {
    # IPv4 addresses can be sent as-is
    ~^[0-9.]+$ "for=$remote_addr";
    # IPv6 addresses need to be bracketed and quoted
    ~^[0-9A-Fa-f:.]+$ "for=\"[$remote_addr]\"";
    # Unix domain socket names cannot be represented in RFC 7239 syntax
    default "for=unknown";
}
map $http_forwarded $proxy_add_forwarded {
    # If the incoming Forwarded header is syntactically valid, append to it
    "~^(,[ \\t]*)*([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?(;([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?)*([ \\t]*,([ \\t]*([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?(;([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?)*)?)*$" "$http_forwarded, $proxy_forwarded_elem";
    # Otherwise, replace it
    default "$proxy_forwarded_elem";
}
server {
    listen 80;
    listen [::]:80;
    server_name s3-private.innei.in;
    if ($host != $server_name) {
        return 404;
    }
    location / {
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        client_max_body_size 1000m;
        proxy_redirect off;
        proxy_set_header Host $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 $scheme;
        proxy_set_header Forwarded $proxy_add_forwarded;
        proxy_pass http://172.21.0.2:9000;
    }
}

访问 http://s3-private.innei.in nginx 这边会 timeout

2025/05/31 19:39:55 [error] 207#207: *34 upstream timed out (110: Connection timed out) while connecting to upstream, client: 10.0.0.89, server: s3-private.innei.in, request: "GET / HTTP/1.1", upstream: "http://172.21.0.2:9000/", host: "s3-private.innei.in"
2025/05/31 19:40:55 [error] 207#207: *34 upstream timed out (110: Connection timed out) while connecting to upstream, client: 10.0.0.89, server: s3-private.innei.in, request: "GET /favicon.ico HTTP/1.1", upstream: "http://172.21.0.2:9000/favicon.ico", host: "s3-private.innei.in", referrer: "http://s3-private.innei.in/"
2

---

_**Assistant**_

看起来你遇到了 Docker 容器间网络连接的问题。虽然你在 nginx 容器内部可以通过 `curl 172.21.0.2:9000` 访问目标容器，但通过 nginx 代理时却超时了。

这个问题通常是因为容器网络配置不当导致的。让我帮你分析和解决这个问题：

## 问题分析

1. **网络隔离问题**：你的 nginx 容器在 `nginx-network` 网络中，而目标容器（172.21.0.2:9000）可能在不同的网络中
2. **IP 地址硬编码**：直接使用 IP 地址 `172.21.0.2` 不是最佳实践

## 解决方案

### 方案 1：将目标容器加入同一网络（推荐）

修改你的 `docker-compose.yml`，将目标容器也加入 `nginx-network`：

```yaml
version: '3.8'

services:
  nginx-ui:
    image: uozi/nginx-ui:latest
    container_name: nginx-ui
    restart: always
    environment:
      - TZ=Asia/Shanghai
    volumes:
      - ./nginx:/etc/nginx
      - ./nginx-ui:/etc/nginx-ui
      - ./www:/var/www
      - /var/run/docker.sock:/var/run/docker.sock
    ports:
      - "80:80"
      - "443:443"
      - "29000:9000"
    networks:
      - nginx-network

  # 添加你的目标容器到同一个 compose 文件中
  your-target-service:
    image: your-target-image  # 替换为实际的镜像
    container_name: your-target-container  # 替换为实际的容器名
    ports:
      - "9000:9000"  # 如果需要外部访问
    networks:
      - nginx-network

networks:
  nginx-network:
    driver: bridge
```

然后修改 nginx 配置，使用容器名而不是 IP：

```nginx
# ... existing maps ...

server {
    listen 80;
    listen [::]:80;
    server_name s3-private.innei.in;
    
    if ($host != $server_name) {
        return 404;
    }
    
    location / {
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        client_max_body_size 1000m;
        proxy_redirect off;
        proxy_set_header Host $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 $scheme;
        proxy_set_header Forwarded $proxy_add_forwarded;
        
        # 使用容器名而不是 IP 地址
        proxy_pass http://your-target-container:9000;
        
        # 添加超时设置
        proxy_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
    }
}
```

### 方案 2：如果目标容器已经存在且不能修改

如果目标容器已经在运行且你不能修改它的网络配置，可以让 nginx 容器加入目标容器的网络：

1. 首先查看目标容器的网络：
```bash
docker inspect your-target-container | grep NetworkMode
```

2. 修改 `docker-compose.yml`，让 nginx 使用外部网络：
```yaml
version: '3.8'

services:
  nginx-ui:
    image: uozi/nginx-ui:latest
    container_name: nginx-ui
    restart: always
    environment:
      - TZ=Asia/Shanghai
    volumes:
      - ./nginx:/etc/nginx
      - ./nginx-ui:/etc/nginx-ui
      - ./www:/var/www
      - /var/run/docker.sock:/var/run/docker.sock
    ports:
      - "80:80"
      - "443:443"
      - "29000:9000"
    networks:
      - nginx-network
      - target-network  # 添加目标容器的网络

networks:
  nginx-network:
    driver: bridge
  target-network:
    external: true
    name: your-target-network-name  # 替换为实际的网络名
```

### 方案 3：添加超时和重试配置

无论使用哪种方案，都建议在 nginx 配置中添加更好的超时和重试设置：

```nginx
server {
    listen 80;
    listen [::]:80;
    server_name s3-private.innei.in;
    
    if ($host != $server_name) {
        return 404;
    }
    
    location / {
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        client_max_body_size 1000m;
        proxy_redirect off;
        proxy_set_header Host $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 $scheme;
        proxy_set_header Forwarded $proxy_add_forwarded;
        
        # 超时设置
        proxy_connect_timeout 10s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
        
        # 重试设置
        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
        proxy_next_upstream_tries 3;
        proxy_next_upstream_timeout 30s;
        
        proxy_pass http://172.21.0.2:9000;  # 或使用容器名
    }
}
```

## 调试步骤

1. **检查网络连接**：
```bash
# 进入 nginx 容器
docker exec -it nginx-ui bash

# 测试连接
curl -v http://172.21.0.2:9000
telnet 172.21.0.2 9000
```

2. **检查容器网络**：
```bash
# 查看 nginx 容器的网络
docker inspect nginx-ui | grep -A 20 Networks

# 查看目标容器的网络
docker inspect your-target-container | grep -A 20 Networks
```

3. **查看 nginx 日志**：
```bash
docker logs nginx-ui -f
```

推荐使用方案 1，将所有相关容器放在同一个 Docker Compose 文件中，并使用容器名进行通信，这是最稳定和可维护的方式。

你能告诉我目标容器的具体信息吗？比如容器名、使用的网络等，这样我可以给出更具体的配置建议。

---

