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Knowledge Object Explorer

Admins: Please read about Splunk Enterprise 8.0 and the Python 2.7 end-of-life changes and impact on apps and upgradeshere.
Overview
Details
The Knowledge Object Explorer helps you understand how Splunk turns a search and your configured knowledge objects into a normalized search.

You get a tree visualization for the tags, eventtypes, reverse lookups, fields, field aliases, calculated fields, and plain strings that appear in your search after expansion. For a quick dive into your environment, the Browse page parses all Tags, Event Types, and Data Model Objects for their normalizedSearch length letting you explore and optimize the worst offenders first.

This is the companion app to my .conf 2015 talk "Optimizing Splunk Knowledge Objects", the session includes lots of search expansion background information and some demos of the Knowledge Object Explorer.

A note on Splunk Enterprise 6.6: While the Knowledge Object Explorer does work with 6.6, it does not mirror the litsearch optimization attempts built into 6.6.

Install app, restart Splunk, open app, enter search, see your search expand, maybe wish you didn't.

This is the companion app to my .conf 2015 talk "Optimizing Splunk Knowledge Objects", the session includes lots of search expansion background information and some demos of the Knowledge Object Explorer - grab the Slides or the Recording.

The Knowledge Object Explorer will traverse your knowledge object tree step-by-step, expect a large number of requests made against your REST API when expanding very large searches. Most requests are cached, but still keep an eye on your system and maybe not go for tag=* right away... don't say I didn't warn you! (Good thing tag=* isn't supported at the moment)
To help you prioritize your optimization efforts, the Browse page will parse all Tags, Event Types, and Data Model Objects to return a list sorted by normalizedSearch length with conventient links drilling down into the Explorer. The D3 tree will by default get skipped for normalizedSearch lengths over 10kB to spare the browser, your mileage may vary.
Installation note: The app will expose the calculated fields REST endpoint through the splunkweb port in addition to the other endpoints such as field aliases that are exposed by default.

A note on Splunk Enterprise 6.6: While the Knowledge Object Explorer does work with 6.6, it does not mirror the litsearch optimization attempts built Splunk since 6.6.

Known Issues (v1.2):

  • Reverse lookups are presumed case insensitive
  • Wildcarded eventtype or tag names eventtype=foo* are not supported
  • Resolution of field aliases and calculated fields goes deeper than Splunk's own search parser, causing some discrepancies between the search tree and the normalized search posted underneath
  • Layout parameters are neither dynamic nor user-settable
  • Errors in reverse lookups such as "lookup table 'foo' is invalid" do not propagate up
  • Let me know if you find more!

Changelog (v1.2):

  • Fixed a bug that rarely led to skipping some knowledge objects from being loaded and displayed

Changelog (v1.1):

  • Added variable tree depth
  • Added option to skip drawing the tree
  • Added tables showing the source app and stanzas for traversed knowledge objects
  • Added support for zero-parameter macros
  • New Browse page

Release Notes

Version 1.3.0
Jan. 8, 2020

Version 1.2
Oct. 13, 2017

- Supports very large lists of same-name KOs again
- Checked for 7.0 compatibility

Version 1.1
Feb. 28, 2016

- New Browser page parses all Tags, Event Types, and Data Model Objects in a name space; links to Explore page for quick investigation
- New "Where did this setting come from?" tags on the Explore page
- Support for macros, variable tree depth, and skipping the D3 tree for very large normalizedSearches

Version 0.1
Sept. 6, 2015

209
Installs
1,703
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