Splunk® Enterprise

Search Manual

Download manual as PDF

Download topic as PDF

Use lookup to add fields from lookup tables

You can match fields in your events to fields in external sources, such as lookup tables, and use these matches to add more information inline to your events.

A lookup table can be a static CSV file, a KV store collection, or the output of a Python script. You can also use the results of a search to populate the CSV file or KV store collection and then set that up as a lookup table. For more information about field lookups, see "Configure CSV and external lookups" and "Configure KV store lookups" in the Knowledge Manager Manual.

After you configure a fields lookup, you can invoke it from the Search app with the lookup command.

Example: Given a field lookup named dnslookup, referencing a Python script that performs a DNS and reverse DNS lookup and accepts either a host name or IP address as arguments -- you can use the lookup command to match the host name values in your events to the host name values in the table, and then add the corresponding IP address values to your events.

... | lookup dnslookup host OUTPUT ip

For a more extensive example using the Splunk script external_lookup.py, see "Reverse DNS Lookups for Host Entries" in the Splunk blogs.

PREVIOUS
Use the eval command and functions
  NEXT
Extract fields with search commands

This documentation applies to the following versions of Splunk® Enterprise: 6.2.0, 6.2.1, 6.2.2, 6.2.3, 6.2.4, 6.2.5, 6.2.6, 6.2.7, 6.2.8, 6.2.9, 6.2.10, 6.2.11, 6.2.12, 6.2.13, 6.3.0, 6.3.1, 6.3.2, 6.3.3, 6.3.4, 6.3.5, 6.3.6, 6.3.7, 6.3.8, 6.3.9, 6.3.10, 6.3.11, 6.3.12, 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.4.4, 6.4.5, 6.4.6, 6.4.7, 6.4.8, 6.4.9, 6.5.0, 6.5.1, 6.5.1612 (Splunk Cloud only), 6.5.2, 6.5.3, 6.5.4, 6.5.5, 6.5.6, 6.6.0, 6.6.1, 6.6.2, 6.6.3, 6.6.4, 7.0.0


Was this documentation topic helpful?

Enter your email address, and someone from the documentation team will respond to you:

Please provide your comments here. Ask a question or make a suggestion.

You must be logged into splunk.com in order to post comments. Log in now.

Please try to keep this discussion focused on the content covered in this documentation topic. If you have a more general question about Splunk functionality or are experiencing a difficulty with Splunk, consider posting a question to Splunkbase Answers.

0 out of 1000 Characters