报错信息：
nginx: [emerg] "referer_hash_max_size" directive is not allowed here in /usr/local/openresty/nginx/conf/nginx.conf:25 nginx: configuration file /usr/local/openresty/nginx/conf/nginx.conf test failed
默认是加载这个模块的.
referer_hash_max_size, 只能在 server 和 location 下使用
referer_hash_max_size
Syntax: referer_hash_max_size size; Default: referer_hash_max_size 2048; Context: server, location This directive appeared in version 1.0.5.
