Planning to Upgrade Splunk Enterprise? Prepare with the New Splunk Platform Upgrade Readiness App

A future version of Splunk Enterprise will be built to support Python 2.7 and 3.7 due to the upcoming Python 2.7 EOL on January 1, 2020, allowing for all files to be migrated to be Python 3 compatible over time. If you are a Splunk admin or developer, this means there are a few things to be aware of in advance of the upcoming release in order to build a successful upgrade plan. When upgrading, admins and developers will need to take a series of steps in order to make sure removed features and Python compatibility are addressed. 

We Have an App for That

Our new Splunk Platform Upgrade Readiness app makes life easy for admins. Simply download and run — the app takes care of scanning your system and provides you with clear descriptions and action items to take prior to upgrading. In addition, check out our "Admins and Developers: We’re Transitioning to Python 3" blog post for developers to make sure the apps you build are future-proofed and remain compatible with the new release.

Python is part of Splunk’s underlying ecosystem of open source technologies, and as Python continues to modernize, admins should plan to move to Python 3 to take advantage of new libraries and reap the benefits of using supported open source software. A future release of Splunk Enterprise will default to Python 2.7, with 3.7 as an option on both the per-script and global level, and later releases will default to 3.7. While Python 2.7 will be EOL, Splunk will continue to support previous versions of Splunk Enterprise using Python 2.7 for their standard support period. Splunk reserves the right to remove support for versions of Splunk Enterprise using Python 2.7 at the end of the corresponding support periods.

Splunk users’ timelines to upgrade vary based on their unique business needs. Accordingly, it may be beneficial to add an upgrade readiness review to your project roadmap as soon as possible to help develop an upgrade plan. Government and industry customers with strict requirements around use of supported open source software should consider upgrading to a version of Splunk that supports both Python 2.7 and 3.7 and using the upgrade readiness app in the short term to appropriately account for Python 2.7’s End-of-Life on January 1, 2020.

Example Time

Let’s take a look at an example of upgrade efforts supported by the Splunk Platform Upgrade Readiness app. Note that the order of these actions depends on specific upgrade requirements — for this and any future upgrade, please only conduct upgrades after consulting Python migration documentation available in connection with each Splunk Enterprise release. This example is only an illustrative sizing reference. Splunk recommends conducting all testing in a development environment, which is reflected below.


Relative Effort T-Shirt Size

Identify impacted components using Splunk Platform Upgrade Readiness App


Use Splunk Platform Upgrade Readiness App to address prerequisites for private apps to upgrade: remove features and migrate Splunk web dependent scripts (Mako templates, CherryPy endpoints)


Migrate scripts in private apps outside of Splunk web on per-script basis to be Python 3.7 compatible

Medium to Large

Test changes in dev environment

Small to Medium

Update Splunkbase apps that are Python 3 compatible


Reflect changes in production environment


Upgrade to Enterprise version with Python 3.7 support

Depends on deployment complexity

Anything Else I Should Be Thinking Of?

Finally, if you are running Splunk built applications and add-ons like Splunk Enterprise Security, the Machine Learning Toolkit (MLTK), or Splunk IT Service Intelligence (ITSI) that require extra steps to be taken due to this migration, make sure to review release documentation and include similar preparation steps in your plans when you upgrade applications to their newest versions as well.

The great news is that the upgrade to Python 3.7 will power new and exciting ways to build applications in Splunk. We look forward to sharing all the new features and functionalities powered by the upcoming release. Start your preparation now by downloading and running the Splunk Platform Upgrade Readiness app and visit our Splunk docs for more information on the move to Python 3.7, and look for further improvements to the Upgrade Readiness App in the upcoming weeks and months!

Note: This information is subject to change at any time, at the sole discretion of Splunk Inc. and without notice. This roadmap information shall not be incorporated into any contract or other commitment. Splunk undertakes no obligation to either develop or deliver any product, features, or functionality described here.

Anna Mensing
Posted by

Anna Mensing

Anna is the Director of Product Marketing for Splunk’s Platform and Machine Learning products. She works closely with customers to help them understand how their data can reveal insights across Security, Observability and more. She has 12+ years of experience bringing to market SaaS and software solutions in technology and public sector industries. Anna holds an MBA from Duke University and a degree in Systems and Information Engineering from the University of Virginia. Outside of work, Anna enjoys traveling, reading science fiction, trying out new cooking recipes, hiking and exploring the Washington, DC area!

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