場景

本地部署deepseek模型，用的Ollama管理，內(nèi)網(wǎng)穿透到公網(wǎng)，在通過nginx反代ollama接口。

問題描述

1. 跨域問題

• nginx轉(zhuǎn)發(fā)時請求頭中需要加入origin，并且origin還要和ollama接口同源（協(xié)議、ip、端口一致）。

proxy_set_header origin http://ip:11434;

2. 無法逐字輸出

• 關(guān)鍵配置：禁用緩沖和緩存

proxy_buffering off;
proxy_cache off;

• 確保流式傳輸?shù)膶崟r性

proxy_set_header Connection '';
proxy_http_version 1.1;
chunked_transfer_encoding off;

完整配置

server {listen 80;server_name 域名;return 301 https://$server_name$request_uri;
}
server {listen 443 ssl;server_name 域名;#ssl證書配置ssl_certificate      /opt/nginx/conf/ssl/xxx/fullchain.pem;ssl_certificate_key  /opt/nginx/conf/ssl/xxx/key.pem;ssl_session_cache    shared:SSL:1m;ssl_session_timeout  5m;ssl_ciphers  HIGH:!aNULL:!MD5;ssl_prefer_server_ciphers  on;# 反代到 Ollama APIlocation /api/ {# Ollama 默認端口是 11434proxy_pass  http://服務(wù)器IP:11434;  # 請求時的origin請求頭proxy_set_header origin http://服務(wù)器IP:11434;# 關(guān)閉 Nginx 的響應(yīng)緩沖，強制數(shù)據(jù)實時傳輸?shù)娇蛻舳?/span>proxy_buffering off;# 使用 HTTP/1.1 以支持長連接，避免 HTTP/1.0 的短連接問題proxy_cache off;# 確保流式傳輸?shù)膶崟r性proxy_set_header Connection '';proxy_http_version 1.1;# 關(guān)閉 Nginx 的分塊編碼處理（根據(jù)實際情況調(diào)整）chunked_transfer_encoding off;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 $scheme;# 添加 CORS 頭部add_header 'Access-Control-Allow-Origin' '*' always;add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;# 處理預(yù)檢請求 (OPTIONS)if ($request_method = 'OPTIONS') {add_header 'Access-Control-Allow-Origin' '*';add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';add_header 'Access-Control-Max-Age' 1728000;add_header 'Content-Type' 'text/plain; charset=utf-8';add_header 'Content-Length' 0;return 204;}}
}