![]() This use case leads us to the saved search-based Dynamic Lookup. Use Case 2: You want to create a lookup, however, the data you want to put in the lookup is dynamic in nature and comes as a Splunk event. You can follow this Splunk docs link to configure the CSV-based Static Lookup file either through the web manager or through a configuration file. For any coded, numeric, or otherwise not user-friendly field where information can easily be mapped for users with a lookup, this is the solution for you. However, understanding field values can be tricky when you are working with proprietary technologies and the various codes associated with them. HTTP Response Code 200 corresponds to “Success” and HTTP Code 404 corresponds to “Page Not Found.” This is the simplest example as most users probably know the meaning of most HTTP Response Codes. Let’s say you have events with an HTTP Response Code but you want to add a description for each of the error codes to make it understandable for the user. This use case leads us to a CSV file-based Static Lookup. Use Case 1: You have events indexed in Splunk but these events don’t contain all the information you want to record and you want to add some context to the field values. Let’s start with a relatively simple use case first. I am going to cover some use cases here that provide the most value from the Splunk lookup feature. Lookup, in general, is a very broad concept. Splunk documents cover lookups in detail. As their name suggests, the CSV does not change over timeĭynamic Lookup – Dynamic Lookups refer to a CSV file that is periodically updated through a saved search or script(s). Static Lookup – Static lookups are CSV files created and uploaded manually by the user. ![]() Lookup Tables – Lookup tables are CSV files used to add details/fields to a Splunk event based on matching a field between a CSV file and a Splunk event.Įxternal Lookup – Also referred to as a Scripted Lookup, this type of lookup uses Python code or an executable to populate a Splunk event with additional details from the external world. Lookup Definition – The lookup definition provides the name of the lookup and path to its file. I will start with some lookup terminology and then cover a few use cases followed by some tips for using lookups effectively. External Lookups, Time-based Lookups, and Geospatial Lookups will be covered in a future article. Today, I am going to cover a few lookup use cases and some tips around lookups (plus a little bit about KV Store) to help you make the most of this Splunk feature. Lookups enable you to add context and do more creative correlations with your machine data. Splunk Lookups are a powerful way to enrich your data and enhance your search experience. Over the past few years, I have worked with various customers for different Splunk use cases and one thing I have noticed is that most customers are not taking full advantage of Splunk lookups.
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