server {
        listen 80;
        listen [::]:80;

        root /var/www/servicedesk/html;
        index index.html index.php index.htm index.nginx-debian.html;

        server_name 192.168.4.180 www.servicedesk;

        location / {
        if (-f $document_root/reconstruction.html) {
            return 503;
        }

        try_files $uri $uri/ =404;

    }

    error_page 503 = @maintenance;
        location @maintenance {
            if ($remote_addr !~ "^192.168.4.64"){
                rewrite ^(.*)$ /reconstruction.html break;
            }
        if ($remote_addr !~ "^192.168.4.19"){
        rewrite ^(.*)$ /reconstruction.html break;
        }
        if ($remote_addr !~ "^192.168.4.18"){
        rewrite ^(.*)$ /reconstruction.html break;
        }
    }

    location ~ \.php$ {
            include snippets/fastcgi-php.conf;
            fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
        }

        location ~ /\.ht {
            deny all;
        }

}