/ # cat /etc/nginx/include/oauth.conf
    location = /oauth2/auth {
        internal;
        proxy_pass_request_body off;
        proxy_set_header Content-Length "";
        proxy_set_header Host auth.$main_domain;
        proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Scheme $scheme;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header X-Auth-Request-Redirect $request_uri;
        proxy_pass https://auth.$main_domain/oauth2/auth;
    }

server {
    root /var/www/site.name;
    index index.php index.htm index.html;
    server_name site.name;

    location / {
        root /var/www/site.name/site;
    }

    location /api {
        root /var/www/site.name/api;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
    }

    listen [::]:443 ssl ipv6only=on; # managed by Certbot
    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/site.name/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/site.name/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}

server {
    if ($host = site.name) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


    listen 80;
    listen [::]:80;

    server_name site.name;
    return 404; # managed by Certbot


}

2020/06/15 15:01:18 [error] 120#120: *45436 auth request unexpected status: 404 while sending to client, client: 5.228.140.7, server: foobar.example.space, request: "GET /api/admin HTTP/2.0", host: "foobar.example.space"

{"@timestamp": "2020-06-15T15:01:18+00:00","remote_addr": "5.228.140.7","vhost": "foobar.example.space","request_time": 0.005,"request": "GET /api/admin HTTP/2.0","status": 500,"body_bytes_sent": 579,"http_referer": "","http_user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36","connection": "45436","scheme": "https","upstream_addr": "","upstream_status": "","upstream_response_time": "","upstream_connect_time": "","trace_id": "22699f757a820550b72157d45da54fe4","request_id": "22699f757a820550b72157d45da54fe4"}

drwxr-xr-x 5 root root 4.0K Jun 15 17:41 .
drwxr-xr-x 4 root root 4.0K Jun 14 20:49 ..
-rw-r--r-- 1 root root 3.9K Jun 15 14:18 common.php
-rw-r--r-- 1 root root  601 Jun 15 14:23 config.php
drwxr-xr-x 2 root root 4.0K Jun 15 14:18 image
-rw-r--r-- 1 root root 1.8K Jun 15 17:10 index.php
drwxr-xr-x 2 root root 4.0K Jun 15 14:18 payment
-rw-r--r-- 1 root root   22 Jun 15 17:32 phpinfo.php
-rw-r--r-- 1 root root   78 Jun 15 14:18 README.md
drwxr-xr-x 2 root root 4.0K Jun 15 14:29 routes
-rw-r--r-- 1 root root 3.8K Jun 15 14:18 site.name.sql