Wordpress Drupal Any nginx gurus here? (Drupal 8)

I'm about to quit banging my head against this particular problem, but here goes:

Fresh install of centminmod beta 9, Drupal installed via web download and script. Things mostly run. Right after the installation links wouldn't work, but reconfiguring the /etc/local/nginx/conf/conf.d/mysite.com.conf && mysite.com.ssl.conf files to include the following made most things work:

PHP:

location / {
try_files $uri $uri/ @rewrite;
expires max;
}

location @rewrite {
rewrite ^/(.*)$ /index.php?q=$1;
}

(I actually can't tell that the second location directive does anything, but it didn't break the site, so....)

---

Now, that lets me navigate most of the Drupal admin interface, but trying to add content (like a new page or article) gives me a 500 error. That means I can navigate to mysite.tld/node/add and everything looks fine, but the link to mysite.tld/node/add/article is broken and errors out. And I can't figure it out.

The nginx recipe for Drupal lists some additional code I've tried, but this always results in cloudflare throwing a "bad gateway" error. I'm running Drupal 8 by the way:

PHP:

    location ~ '\.php$|^/update.php' {
        fastcgi_split_path_info ^(.+?\.php)(|/.*)$;
        # Security note: If you're running a version of PHP older than the
        # latest 5.3, you should have "cgi.fix_pathinfo = 0;" in php.ini.
        # See http://serverfault.com/q/627903/94922 for details.
        include fastcgi_params;
        # Block httpoxy attacks. See https://httpoxy.org/.
        fastcgi_param HTTP_PROXY "";
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
        fastcgi_param QUERY_STRING $query_string;
        fastcgi_intercept_errors on; #nginx doesn't like this so I need to edit it out; apparently this is declared elsewhere
        # PHP 5 socket location.
        #fastcgi_pass unix:/var/run/php5-fpm.sock;
        # PHP 7 socket location.
        fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
    }

Do any of you have any idea what I should try next? I'm done pulling my hair out and I'm going to grab a beer...

 

Well, for now I shut down that VM and reinstalled Drupal using a stock Centos build.

It works though.