Splunk Search
Highlighted

stats count by date

Path Finder

earliest=10/1/2016:00:00:00 latest=10/2/2016:23:59:59 sourcetype=iis | stats count by date

date count
2016-10-01 500
2016-10-02 707
2016-10-03 205

earliest=10/1/2016:00:00:00 latest=10/2/2016:23:59:59 sourcetype=iis | eval date=strftime(_time, "%Y-%m-%d") | stats count by date

date count
2016-10-01 705
2016-10-02 707

Why does the first query return 3 rows, especially when 10/3/2016 is not a part of the search time range?

Highlighted

Re: stats count by date

SplunkTrust
SplunkTrust

Date isn't a default field in Splunk, so it's pretty much the big unknown here, what those values being logged by IIS actually are/mean. Who knows.

If you want to see a count for the last few days technically you want to be using timechart.

earliest=10/1/2016:00:00:00 latest=10/2/2016:23:59:59 sourcetype=iis | timechart span=1d count

Anyway, as to why there's a date value being returned that's outside of the timerange, my guess is that in those 205 events, for some semantic reason inside the events themselves, the "date" the event is talking about is actually in the (then) future.

One way to find out more is to run this:

earliest=10/1/2016:00:00:00 latest=10/2/2016:23:59:59 sourcetype=iis | stats last(_raw) as rawtext count by date

And it will grab a sample of the rawtext for each of your three rows.

View solution in original post

0 Karma
Highlighted

Re: stats count by date

Path Finder

Thanks guys!
Yes, MS IIS defines a "date" field in its log format that becomes part of the Splunk event.
And that date/time appears to be in GMT (future).

Software: Microsoft Internet Information Services 8.5

Version: 1.0

Date: 2016-10-04 00:00:00

Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken

0 Karma
Highlighted

Re: stats count by date

SplunkTrust
SplunkTrust

Great! 😃 I wonder how many others have gotten tangled up in this.

0 Karma
Highlighted

Re: stats count by date

Legend

It seems like there is a field called date in your event. The field that is used for _time is not the date field.

0 Karma