nginx server configuration for a wordpress instance served from a URL’s subdirectory

You want to serve a wordpress instance on a website’s domain url but not at the path’s root, you want it under a sub-directory, for example “blog”, the same as this blog:

https://www.gubatron.com/blog 

Here’s how my NGINX’s server block for ‘www.gubatron.com’ looks like at the moment (https/ssl hasn’t been configured yet)

server {
  server_name www.gubatron.com;
  listen 80;
  listen [::]:80;
  root /media/ebs/data/websites/gubatron.com/;
  index index.php index.html index.htm;

  # wordpress lives at gubatron.com/blog/...
  rewrite ^/blog/wp-admin/(.*) /blog/wp-admin/$1;
  #search redirect                                                                                                       
  rewrite ^/blog/(.*)s=(.*)$ /blog/index.php?s=$2;
  try_files $uri $uri/ /blog/index.php$is_args$args;

  location ~ \.php {
    include snippets/fastcgi-php.conf;
    fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
    include fastcgi_params;
  }
  location ~ \.git {
    deny all;
  }
}

Here is the equivalent in lighttpd, too bad lighttpd has no plans for HTTP2, it’s much friendlier and flexible to configure than nginx in my humble opinion.

$HTTP["host"] =~ "^gubatron.com$|^www.gubatron.com$" {
  server.document-root="/media/ebs/data/websites/gubatron.com/"

  $HTTP["url"] =~ "\.git" {
     url.access-deny = ("")
  }

  url.rewrite = (
            "^/blog/wp-admin/(.*)" => "$0",
            "^/blog/(.*)\.(.+)$" => "$0",
            "^/blog/(.+)/?$" => "/blog/index.php/$1"
  )
}

I used to host this website and wordpress on lighttpd, lighttpd’s config file is very powerful, it’s all based on matching server variables and applying rules, I will miss it dearly, things like having a compressed file cache and it’s flexibility, but I have to move on to nginx if I want to use http2, the lighttpd has no plans for http2 support and it’s just much faster and efficient than http 1.1.