Getting Data In

Blacklist/ignore files by size

TonyLeeVT
Builder

When monitoring a directory for files (using inputs.conf) is it possible to blacklist or ignore files over a certain size? Say for instance a few files get dropped in that are 100 MB in size or more. Splunk usually errors after processing these anyway. Can I ignore processing these larger files? Thanks in advance.

0 Karma

woodcock
Esteemed Legend

I have used the following hack to solve this problem:

Create a new directory somewhere else (/destination/path/) and point the Splunk forwarder there. Then setup a cron job that creates selective soft links to files pointing to the real directory (/source/path/) for any file that meets your "keep" criteria, like this:

*/5 * * * * cd /source/file/path/ && /bin/find . -maxdepth 1 -type f -size -100M | /bin/sed "s/^..//" | /usr/bin/xargs -I {} /bin/ln -fs /source/path/{} /destination/path/{}

Don't forget to setup a 2nd cron to delete the broken softlinks (source files have been deleted), too, or you will end up with tens of thousands of files here, too.

0 Karma

TonyLeeVT
Builder

Thank you for adding a work around sir. 🙂 I will give it a try, but will still leave this issue open until Splunk adds a supported solution such as a file size parameter in inputs.conf. Thanks again.

0 Karma

somesoni2
Revered Legend

I don't think there is a native way to ignore files based on their size. On the other hand, Splunk can monitor files much larger than 100 MBs so could you tell us more about "Splunk usually errors after processing these anyway'??

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Persistent Queue at TcpOut — One of Splunk's Most Practical Features

Splunk introduced persistent queueing at the tcpout layer as one of the most practical resilience features in ...

Skip the Awkward Silence: Have a .conf-ersation at .conf26

Picture this. You arrive at .conf26 already having your socializing and networking plans mapped out. No ...

Rethinking Zero Trust: From Product Purchases to Logical Control Evidence

Implementing Zero Trust (ZT) across complex environments often falters at the very beginning due to a ...