Define Scripted Fields in Kibana 7.6

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Define Scripted Fields in Kibana 7.6

With scripted fields in Kibana, we can create new fields not originally indexed in Elasticsearch that are computed at query time and added as a new field to the resulting documents. In this hands-on lab, we will explore the capabilities of scripted fields in Kibana by creating and visualizing some of our own.

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Lab Info

Level

Intermediate

Last updated

Sep 23, 2025

Duration

2h 0m

Challenge

Create and Save the kilobytes Scripted Field for the Logs Index Pattern
1. Create a new scripted field called kilobytes for the logs index pattern.
2. Divide the value of the bytes field by 1024 to calculate the value for the scripted field.
3. Save the field.
Challenge

Create and Save the flight Scripted Field for the Flights Index Pattern
1. Create a new scripted field called flight for the flights index pattern.
2. Concatenate a combination of static strings and the fields FlightNum, OriginAirportID, and DestAirportID to produce values that look like Flight FlightNum: OriginAirportID to DestAirportID (for example: Flight 3CG21F9: EZE to SHA).
3. Save the field.
Challenge

Create and Save the system.memory.buffercache.pct Scripted Field for the metricbeat-* Index Pattern
1. Create a new scripted field called system.memory.buffercache.pct for the metricbeat-* index pattern.
2. Subtract the value of system.memory.actual.used.pct from system.memory.used.pct only if both fields do not have a size of 0 (otherwise known as a null value).
3. Format the scripted field as a percentage number.
4. Save the field.

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