I've recently been running into issues with Splunk not ingesting files, both on universal and heavy forwarders. The example here is a UF on a Windows server. In this example, I'm trying to ingest \\path\to\file.csv, and the error I get is:
DEBUG TailingProcessor - Skipping itemPath='E:\path\to\some\other\file.txt, does not match path='\\path\to\file.csv' :Not a directory :Not a symlink
My input looks like:
index = myindex
sourcetype = mysourcetype
initCrcLength = 512
Also, I had to turn on debug logging in log.cfg to even see these errors. Otherwise there were no errors at all.