I have a very simple search which I use to create a 100% Stack Bar showing the availability of a specific host:
host=myhostname index=availability sourcetype="avail" | stats avg(unavail) AS Unavailability, avg(avail) AS Availability by host
I know I could just replace the "myhostname" with "*" and create one graph with several host entries displaying their availability, but what I'd like to do is create one graph for each host on a Dashboard dynamically, that is, if a new server starts to send logs do splunk, this dashboard will automatically create a new graph containing it's availability.
And I need to do this using Simple XML (if possible), my access to our Splunk server is currently limited. So far, I found the "depends" property which I can use with the "chart" element, which means that this chart will only be displayed if the tokens in the "depends" property actually exists, but I could figure out a way to use it.
Have you tried using multi-series mode? Just set multi-series mode to "yes" in your chart properties and Splunk will make a different chart for each of the field you are splitting by (host in your case). This won't give each chart its own panel, but it will give a chart for each host. Is that close enough?