What file must be modified to set retention policy in Splunk?

To set the retention policy in Splunk, the appropriate file to modify is indexes.conf. This configuration file is central to managing the settings for index data, including how long different types of data should be retained. Within indexes.conf, you can specify various parameters such as 'frozenTimePeriodInSecs,' which controls the time period that data is retained before it is deleted or moved to a frozen state.

By configuring retention policies in indexes.conf, you can effectively manage storage and ensure compliance with data retention regulations. This allows administrators to balance the need for long-term data availability with storage costs and performance considerations.

The other files mentioned serve different purposes: inputs.conf manages data input settings, props.conf is used for data parsing and indexing configurations, and outputs.conf is concerned with data output configurations to forwarders or other systems. These files do not have a role in controlling retention policies for indexed data.