Splunk Search

External Python Lookup not working with Splunk 8.0 with Python 3



  1. I have setup Splunk v8.0 in a separate VM and configured it to run strictly Python 3. Both my environments (Splunk v7 & Splunk v8) are wired to pull the same data for Audit/Operational logs from Azure. Despite having the same configuration for the External Lookup, I am getting NIL values in response in Splunk v8. I checked the input which was being passed to the script as well and it is not correct from what I see because that data is not present in the context of that search and other records are not being sent to the lookup script.
  2. Furthermore, when I try to execute the lookup with Splunk’s Command line Python, the script executes properly and I am able to see the logs and response as well –

    PS C:\Program Files\Splunk\etc\apps\Splunk_TA_microsoft-cloudservices\bin> & "C:\Program Files\Splunk\bin\splunk.exe" cmd python3 Transformation.py '{\"Id\":\"9afcad57-09c3-4d2d-9049-18b15e733f66\",\"Properties\":{\"PrincipalId\":\"e0572058-cc90-453d-adc9-3
    {'Name': 'read-only', 'Type': 'User'}
    /subscriptions/Azure Subscription/resourceGroups/ARC/providers/Microsoft.Web/sites/cus-fun-01

This implies that the Lookup script is compatible with Python 3 and is working with Splunk’s inbuild Python 3 interpreter but looks like something is going wrong when data is coming in when Splunk is trying to look up as part of a search. Whenever the search happens with this External Lookup in Splunk, it gives me NIL values for several records which are not part of the search context and when I try navigating to those records, Splunk doesn’t find any.

Any idea what might be the issue here?


0 Karma
Get Updates on the Splunk Community!

.conf24 | Registration Open!

Hello, hello! I come bearing good news: Registration for .conf24 is now open!   conf is Splunk’s rad annual ...

ICYMI - Check out the latest releases of Splunk Edge Processor

Splunk is pleased to announce the latest enhancements to Splunk Edge Processor.  HEC Receiver authorization ...

Introducing the 2024 SplunkTrust!

Hello, Splunk Community! We are beyond thrilled to announce our newest group of SplunkTrust members!  The ...