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Security Operations · Intermediate

Splunk Indexer

The Splunk component that parses incoming data, writes it to indexes and responds to search requests.

Definition

Indexers perform parsing (line breaking, timestamp extraction) and indexing, then serve searches distributed by search heads. Indexer clusters replicate data for availability using replication factor and search factor settings managed by a cluster manager.

Example

An indexer cluster with replication factor 3 and search factor 2.

Exam tip

Know the three tiers: forwarders collect, indexers store, search heads query.

Related terms