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nginx - How to set fastcgi_params_hash_max_size?

问题描述

On my Ubuntu server running Nginx + FastCGI (via Webinoly), nginx -t throws the following warning:

    nginx: [warn] could not build optimal fastcgi_params_hash, 
you should increase either fastcgi_params_hash_max_size: 512 or 
fastcgi_params_hash_bucket_size: 64; ignoring fastcgi_params_hash_bucket_size

At first I thought that I had to change server_names_hash_max_size, but it was already set to 2048 and was unrelated. To make sure, I tried lowering its value to 8, at which nginx -t threw a warning that I should increase it. After restoring it, I got back the initial warning about fastcgi_params_hash_max_size.

I also tried setting fastcgi_params_hash_max_size on my nginx.conf file, but then I got an error that fastcgi_params_hash_max_size is an unknown directive.

So, I guess my question is, how can I change the fastcgi_params_hash_max_size?

Thanks in advance!

标签： nginxfastcgi

解决方案

确实没有fastcgi_params_hash_max_size和fastcgi_params_hash_bucket_size指令。此错误消息是“自动”的，它采用哈希名称（在本例中fastcgi_params_hash），然后通过附加_max_sizeand构造建议的指令名称_bucket_size。

NGINX 哈希通常用于存储类似数组的配置数据，如maps 或fastcgi_paramss （您的情况），并且有关于它们的单独文档不得不说：

大多数散列具有允许更改这些参数的相应指令，例如，对于服务器名称散列，它们是 server_names_hash_max_size 和 server_names_hash_bucket_size。

所以你的哈希没有“相应的指令”，除了：

  • 调查为什么您的配置中有太多fastcgi_param指令？（或具有太多冗长的值）。您很可能对fastcgi_paramss 有次优配置。请记住，这些被传递给 FastCGI（例如 PHP-FPM），如果数据太大，那么您肯定会遇到性能问题，因为 NGINX-PHP-FPM 之间传递的数据过多。
  • 向 NGINX 提交关于添加这些指令的错误问题

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