index=_internal source=*license_usage.log type=Usage | stats sum(b) as bytes by h | eval MB = round(bytes/1024/1024,1) | fields h MB | rename h as host
If you take a look at the license_usage.log, you will see lots of different ways that you can break down this report...
This query would show the results for total (When we selected the time as 'All Time')
Select the time range accordingly to the splunk local time on the license server to get the daily license usage per host
What does it mean with this message (searching Today)?:
index=_internal source=*license_usage.log | head 99
08-24-2015 09:17:26.423 -0700 INFO LicenseUsage - type=Message - License usage logging not available for slave licensing instances, please see license_usage.log on license master=https://***:8089 for usage breakdown
The license usage logs are available in License Master node. If your search head doesn't contain license OR in other words, you've a separate license master node (which is definitely the case per the error that you receive), The license usage logs is not available in the Search Head directly. What you can do is forward the logs from your license master node (mentioned in your log), to forwarder the data to Indexers, so that Search Head can access it.