Hi philwhite, try using this search to find out if/when your license is expiring:
|rest /services/licenser/licenses | eval created=strftime(creation_time,"%m/%d/%y %H:%M:%S")| eval expires=strftime(expiration_time,"%m/%d/%y %H:%M:%S") | eval "size (GB)" = round(quota/1024/1024/1024, 3) | table status, "size (GB)", created, expires, label
You can always hit the rest endpoint to for the same information:
http://docs.splunk.com/Documentation/Splunk/latest/RESTREF/RESTlicenseExamples
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