js_import /usr/share/nginx-plus-module-prometheus/prometheus.js;
    # ...
    server {
        listen 10.40.32.42:8080;
        # ...
        location /api {
            api write=on;
            allow 10.0.0.0/8;
            deny  all;
        }
        location = /dashboard.html {
            auth_basic "Password Required";
            auth_basic_user_file /etc/nginx/.htpasswd;
            root   /usr/share/nginx/html;
	    allow 10.0.0.0/8;
	    deny all;
        }
	location = /metrics {
	    js_content prometheus.metrics;
	}
}