﻿---
title: Elasticsearch configuration reference
description: Configuration settings enable you to customize the behavior of Elasticsearch features. This reference provides details about each setting, such as its...
url: https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference
products:
  - Elasticsearch
applies_to:
  - Elastic Cloud Serverless: Generally available
  - Elastic Cloud Hosted: Generally available
  - Elastic Cloud on Kubernetes: Generally available in 3.0+
  - Elastic Cloud Enterprise: Generally available in 4.0+
  - Self-managed Elastic deployments: Generally available in 9.0+
---

# Elasticsearch configuration reference
<note>
  This section provides detailed **reference information** for Elasticsearch configuration.Refer to [Elasticsearch configuration](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2532/deploy-manage/deploy/cloud-on-k8s/elasticsearch-configuration) in the **Deploy and manage** section for overview, getting started and conceptual information.
</note>

Configuration settings enable you to customize the behavior of Elasticsearch features.
This reference provides details about each setting, such as its purpose, default behavior, and availability in Elastic Cloud environments.
For details on updating user settings, see [Edit Elastic Stack settings](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2532/deploy-manage/deploy/elastic-cloud/edit-stack-settings) for Elastic Cloud Hosted deployments, [Add Elasticsearch user settings](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2532/deploy-manage/deploy/cloud-enterprise/edit-stack-settings-elasticsearch) for Elastic Cloud Enterprise deployments and [Differences from other Elasticsearch offerings](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2532/deploy-manage/deploy/elastic-cloud/differences-from-other-elasticsearch-offerings) for Serverless.
The settings are grouped by feature or purpose, for example:
- [Auditing](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/auding-settings)
- [Circuit breaker](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/circuit-breaker-settings)
- [Cluster formation and discovery](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/discovery-cluster-formation-settings)
- [Cross-cluster replication](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/cross-cluster-replication-settings)
- [Data stream lifecycle](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/data-stream-lifecycle-settings)
- [Enrich settings](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/enrich-settings)
- [Field data cache](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/field-data-cache-settings)
- [Health diagnostic](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/health-diagnostic-settings)
- [Index lifecycle management](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/index-lifecycle-management-settings),
- [Index management](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/index-management-settings)
- [Index recovery](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/index-recovery-settings)
- [Index buffer](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/indexing-buffer-settings)
- [Inference](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/inference-settings)
- [License](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/license-settings)
- [Local gateway](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/local-gateway)
- [Machine learning](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/machine-learning-settings)
- [Monitoring](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/monitoring-settings)
- [Networking](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/networking-settings)
- [Nodes](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/node-settings)
- [Node query cache](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/node-query-cache-settings)
- [Remote clusters](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/remote-clusters)
- [Search](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/search-settings)
- [Security](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/security-settings)
- [Shard request cache](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/shard-request-cache-settings)
- [Shard routing](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/cluster-level-shard-allocation-routing-settings)
- [Snapshot and restore](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/snapshot-restore-settings)
- [Transforms](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/transforms-settings)
- [Thread pools](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/thread-pool-settings)
- [Watcher](https://www.elastic.co/elastic/docs-builder/docs/2532/reference/elasticsearch/configuration-reference/watcher-settings)