Nginx and HHVM always return a 404

This because the /etc/nginx/hhvm.conf did not load before the root in vhost.

This is just a quick notice for myself, I will add more example later:

3 fix solutions:

1.move root out of /

server {
    listen       443 ssl http2;

    root   /var/www/default/public;

    location / {
        index  index.html index.htm;
        include hhvm.conf;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /var/www/default/public;
    }

OR:

server {
    listen       443 ssl http2;

    location / {
        root   /var/www/default/public;
        index  index.html index.htm;
        include hhvm.conf;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /var/www/default/public;
    }

2.move hhvm into /

server {
    listen       80;
    server_name  localhost;
    root   /var/www/html;

    include hhvm.conf;
    # put hhvm.conf out of location /

    #charset koi8-r;
    #access_log  /var/log/nginx/log/host.access.log  main;

    location / {
        index  index.html index.htm;
    }

3.add /var/www replace $doc_root

location ~ \.(hh|php)$ {
    fastcgi_keep_conn on;
# I use UNIX socket inside of local port for better security and performance since both Nginx and HHVM on same Server
#    fastcgi_pass   127.0.0.1:9000;
    fastcgi_pass   unix:/var/run/hhvm/hhvm.sock;
    fastcgi_index  index.php;
    fastcgi_param  SCRIPT_FILENAME /var/www$fastcgi_script_name;
    include        fastcgi_params;
}

My /etc/nginx/hhvm.conf file:

location ~ \.(hh|php)$ {
    fastcgi_keep_conn on;
# I use UNIX socket inside of local port for better security and performance since both Nginx and HHVM on same Server
#    fastcgi_pass   127.0.0.1:9000;
    fastcgi_pass   unix:/var/run/hhvm/hhvm.sock;
    fastcgi_index  index.php;
    fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include        fastcgi_params;
}

Reference:

http://stackoverflow.com/questions/28308099/nginx-and-hhvm-always-return-a-404