Which lets splunk index either the compelte file if a change was made somewhere, or only the last line of it, if something was appended. Is there any way to only index the actual changes? If not, that it always indexes the whole file?
As for the user changing the file, does splunk come with tools to figure that out or do i need to script something myself?
The final goal is to achieve transparency and traceability in case anything happens somewhere in the future.
You must be using Splunk UF in your case to monitor the file configured, Splunk ensures ingest latest updates and no duplicate data being ingested (if you are interested check for fishbucket in docs). Having said that It doesn't ingest whole file for every change and only ingest new lines appended to file.
03/06/2021 10:00:00 Line1-data-feed
03/06/2021 10:01:00 Line2-data-feed
03/06/2021 10:02:00 Line3-data-feed
If some one changed test.conf and then file gets updated/appeded here with - 03/06/2021 10:03:00 Line4-data-feed . UF ensures only ingest this latest change.
Affectively when you search in Splunk SH UI - You will get following output: