Splunk Search

Find a specific kind of event before event result

CMSchelin
Path Finder

I'm searching in our IIS logs. I'm looking for a web POST action. The problem is that this POST action happens after one gets to the object page, which is indicated with a URL parameter. So like, example data:

_time                x_uid  cs_method cs_Referer                cs_uri_stem               cs_uri_query
2018-04-10 12:01:00  52634  POST      http://ref.url/obj/p.htm  http://ref.url/obj/p.htm
2018-04-10 12:00:30  52634  GET       http://ref.url/obj        http://ref.url/obj/p.htm
2018-04-10 12:00:00  52634  GET       http://ref.url            http://ref.url/obj        ?id=123

The criteria I need to find is all times when someone POSTs on that specific page. What I want to also get is what ID was posted against (123, in the above example).

Is that possible? I'm trying to read up on transactions and maps, but I'm not getting it.

0 Karma

woodcock
Esteemed Legend

Assuming x_uid can be used as a SessionID, like this:

Your Existing Search Here
| eventstats values(cs_uri_query) AS cs_uri_query BY x_uid
| search cs_method="POST"

xpac
SplunkTrust
SplunkTrust

You could try it like this:

index=whatever your-search-terms
| transaction 52634 startswith=eval(isnotnull(cs_uri_query)) endswith=eval(like(cs_method, "POST"))

You might need to fine tune the transaction, find more details here: transaction docs

somesoni2
Revered Legend

If x_uid is uniq, you could use stats to get id value from event with cs_method GET.

0 Karma
Get Updates on the Splunk Community!

Extending Observability Content to Splunk Cloud

Watch Now!   In this Extending Observability Content to Splunk Cloud Tech Talk, you'll see how to leverage ...

More Control Over Your Monitoring Costs with Archived Metrics!

What if there was a way you could keep all the metrics data you need while saving on storage costs?This is now ...

New in Observability Cloud - Explicit Bucket Histograms

Splunk introduces native support for histograms as a metric data type within Observability Cloud with Explicit ...