Getting error when trying to set up an alert for starting a Python script.

[msevcik]

I am trying to set up an alert that runs a script after finding a result. For some reason, we see this error each time we try to run the script:

06-01-2020 13:20:09.091 -0500 ERROR ModularUtility - Specified filename "/opt/splunk/etc/apps/TA-S3Deleter/bin/s3_file_deleter.py" not found in search path.

06-01-2020 13:20:09.091 -0500 ERROR sendmodalert - action=s3_file_deleter - Failed to find alert.execute.cmd "/opt/splunk/etc/apps/TA-S3Deleter/bin/s3_file_deleter.py".

Here is how the alert_actions.conf is set up:

[s3_file_deleter]
is_custom = 1
label = S3 File Deleter
description = This action passes along a value in filePath to a python script that will delete a file in an S3 bucket.
payload_format = json
alert.execute.cmd = /opt/splunk/etc/apps/TA-S3Deleter/bin/s3_file_deleter.py

The script definitely exists in that directory. I've reviewed a lot of the documentation on this, and there is no good example for simply running a python script. Any insight would be greatly appreciated. Thanks.

[richgalloway · Accepted solution]

Splunk does not allow random file paths in script commands. Just specify the name of the .py file in alert.execute.cmd and Splunk will fill in the rest.

[msevcik]

Thank you, Rich, that definitely got it to run. The python script checks for the --execute flag and shuts down if it doesn't see it. We modeled it after a Splunk example python script. Any idea how we should be passing the different arguments to the script? I just want to alert on a certain event and pass along a value from one of fields in that event. Let me know if I need to start a new Splunk Answer. Thanks again.

[msevcik]

Nevermind, I think I found where you can define the arguments sent to the script here: https://docs.splunk.com/Documentation/Splunk/8.0.3/AdvancedDev/CustomAlertScript

[myjavaaction]
. . .
alert.execute.cmd = java.path
alert.execute.cmd.arg.0 =  -jar
alert.execute.cmd.arg.1 = $SPLUNK_HOME/etc/apps/myapp/bin/my.jar
alert.execute.cmd.arg.2 = --execute