I have Splunk set to monitor the folder that stores my IIS logs. It is currently working, however, since there is a new log file created daily, each one is considered a source. So when I look at my data summary I have 215 sources and counting since each day a new one is added. Is this the way it is supposed to be?
Yes, this is the way Splunk handles source files; it creates for each new file a field called source=NewFileName. Maybe you mixed it up with sourcetype? This should not be set to auto else it can happen, that Splunk creates new source types as well and this will make your life harder in creating fast performing searches.
My sourcetype is correctly set to "iis". I just find it odd that I have a new source added each day. So that means after a year I will have 365 sources from monitoring the log file directory. Just seems silly to me. But thanks for your answer.