title: Create a variable in Prometheus/Grafana with all values selected by default
body: <p>I'm using Grafana with Prometheus as a Datasource.</p>
  
  <p>I'm trying to create a variable with a filtered list of servers and I want to use this list to fix list of servers to display in my Dashboard.</p>
  
  <p>My variable, named <code>servers_front</code>, is a query (<code>label_values(info_fqdn)</code>) with a regex to choose my servers <code>/.*_front/</code></p>
  
  <p>I want to use this full list of servers by default without displaying a combobox to choose which one I want to display.</p>
  
  <p>Another requirement : If a new server that matches <code>/.*_front/</code> is created, I want the list is automatically updated</p>