Hi @mdmosaraf
There is no official Splunk docs supporting WSL, however this link having some discussion around it which is about installing Splunk Enterprise. IS it possible to install Splunk on Ubuntu on Wind... - Splunk Community
If your requirement is to monitor WSL2 and Splunk Enterprise set-up is already running in your network in different host then i would give a try installation of Splunk Universal Forwarder (UF), Linux version depends on 64/32 bit of your WLS2 OS. If that is successful then add-on Splunk Add-on for Unix and Linux | Splunkbase helps to extract some useful logs from Linux which will be installed on top of UF.
Note: This is not official as per docs just a trail and test, Splunk might not support if you find issues with it. This may result into your WSL2 performance degradation as well if you are running critical apps just keep it in mind.
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An upvote would be appreciated if it helps!
