Very much a noob here. I've read (or tried to read!) the docs, I've watched the videos and still it's not doing what I thought it should.
I have loaded my data into Splunk (an XML file) and did a rex on the data to find what I was looking for. That worked fine.
sourcetype="xml" | rex "<CommandId>(?<commandid>d+)</CommandId>"
Now I want to persist the data. I added this to my props.conf file (in Splunk\etc\system\local):
[xml] REPORT-uploads = commandId
And this to transforms.conf (same location):
Did I do this correctly?
So first, nicely done so far - but I think you are doing too much work!
With Splunk, you can use the xmlkv command and ask Splunk to do the parsing that you are doing by hand. The only issue is that xml parsing can be slow, so you should search first and then parse. For example, if you are looking for commandid=xyz27, run this search string
sourcetype=xml CommandId xyz27 | xmlkv | search CommandId=xyz27 | whateveryouwant
How this works:
<tag>value</tag>, it will create a field named tag and set its value to "value". Voila, fields extracted!
If you are going to do this a lot, you might consider saving it as a macro, once you get it sorted out.
If you want a direct answer to your question 🙂
I think your regex is probably correct, although I would escape the < characters in the regex (making them \< ) because < by itself has a special meaning to regex.
So if you want to continue with your original solution, try that and forget the
But your syntax is a bit wrong, too, I think you need the following in transforms.conf
[commandId] REGEX=\<CommandId>(d+)\</CommandId> FORMAT=commandid::$1
Yeah, the markdown gets screwy sometimes when you put in XML or HTML stuff...