Splunk® Enterprise

Managing Indexers and Clusters of Indexers

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Splunk Enterprise version 5.0 reached its End of Life on December 1, 2017. Please see the migration information.
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About managing indexes

When you add data to Splunk, Splunk processes it and stores it in an index. By default, data you feed to Splunk is stored in the main index, but you can create and specify other indexes for Splunk to use for different data inputs.

An index is a collection of directories and files. These are located under $SPLUNK_HOME/var/lib/splunk. Index directories are also called buckets and are organized by age. For detailed information on index storage, see "How Splunk stores indexes".

In addition to the main index, Splunk comes preconfigured with a number of internal indexes. Internal indexes are named starting with an underscore (_). You can see a full list of indexes in Splunk Web if you click the Manager link in the upper portion of Splunk Web and then click Indexes. These include:

  • main: The default Splunk index. All processed external data is stored here unless otherwise specified.
  • _internal: This index includes internal logs and metrics from Splunk's processors.
  • _audit: Events from the file system change monitor, auditing, and all user search history.

A number of topics in this manual describe ways you can manage your indexes. In particular the following topics are helpful in index management:

For more information on the indexing process

To learn more about indexes, see:

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This documentation applies to the following versions of Splunk® Enterprise: 5.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.0.17, 5.0.18


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