Nginx: [warn] could not build optimal proxy_headers_hash, you should increase either proxy_headers_hash_max_size:

重启nginx警告*hash_max_size,*hash_bucket_size
nginx: [warn] could not build optimal proxy_headers_hash, you should increase either proxy_headers_hash_max_size: 512 or proxy_headers_hash_bucket_size: 64; ignoring proxy_headers_hash_bucket_size
两个的size根据自已系统后端发送的header来进行设置,最好不要设置默认值,否则会报错

解决办法:
编辑vim /etc/nginx/nginx.conf,在http里面增加

proxy_headers_hash_max_size 51200;
proxy_headers_hash_bucket_size 6400;