nginx提示upstream sent too big header while reading response header from upstream错误

nginx日志中出现upstream sent too big header while reading response header from upstream错误，这是header头信息太大的原因，修改nginx配置即可。

client_header_buffer_size 128k;
large_client_header_buffers 4 128k;
proxy_buffer_size 128k;
proxy_buffers 4 128k;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 128k;

修改以后重启nginx。