title: Prometheus empty query results
body: <p>I'm trying to find metric data <code># HELP net_conntrack_dialer_conn_attempted_total Total number of connections attempted by the given dialer a given name.# TYPE net_conntrack_dialer_conn_attempted_total counter</code> but receive <a href="https://i.stack.imgur.com/YzYbG.png" rel="nofollow noreferrer">result</a> . What could be the reason?</p>