Nginx反向代理报错400 Request Header Or Cookie Too Large

Request Header Or Cookie Too Large

• 1、问题
• 2、原因
• 3、解决

1、问题

Nginx反向代理报错400 Request Header Or Cookie Too Large

400 Request Header Or Cookie Too Large

2、原因

假设需要重定向到：www.baidu.com

报错的配置如下：

    location /my-pc{
        access_log /etc/nginx/logs/https_my_pc.log;
        proxy_pass            https://www.baidu.com/my-pc;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

    location /my-web{
        access_log /etc/nginx/logs/https_my_web.log;
        proxy_pass            https://www.baidu.com/my-web;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

需调整：

proxy_set_header Host $host; 

3、解决

调整为：

proxy_set_header Host www.baidu.com; 

全部配置如下：

    location /my-pc{
        access_log /etc/nginx/logs/https_my_pc.log;
        proxy_pass            https://www.baidu.com/my-pc;
        proxy_set_header   Host             www.baidu.com;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

    location /my-web{
        access_log /etc/nginx/logs/https_my_web.log;
        proxy_pass            https://www.baidu.com/my-web;
        proxy_set_header   Host             www.baidu.com;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

问题解决。

OK，就这些吧。
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