Snapshot

As explained in Elasticsearch in Action, Second Edition

A snapshot is a point-in-time backup of Elasticsearch index data and cluster state that can be restored later.

A snapshot backs up Elasticsearch indexes, data streams, and cluster state to durable storage so selected data or an entire cluster can be restored later. Snapshots belong in an off-cluster repository, such as a filesystem, HDFS, or cloud storage, and are suited to regularly automated backups. section 14.4 section 14.4.1

Use the snapshot lifecycle in three stages:

• Register a repository before storing snapshots. section 14.4.1
• Create a full or selective snapshot through the REST API or Kibana. After the first backup, later snapshots store incremental updates rather than full copies. section 14.4.1 section 14.4.3
• Restore an index, a set of indexes, or the full cluster from the registered repository when recovery or migration is required. section 14.4.1 section 14.4.5

Back up production search data

Create a complete snapshot with `PUT _snapshot/es_cluster_snapshot_repository/prod_snapshot_oct22`. To limit the backup, send an `indices` array such as `["*movies*", "*reviews*", "-*.old"]`; attach a `metadata` object when the snapshot needs incident or request details. Delete an obsolete snapshot with `DELETE _snapshot/es_cluster_snapshot_repository/custom_prod_snapshots` to reclaim repository space. section 14.4.3 section 14.4.5

Figure 14.9 Mechanics of snapshot and restore on a cluster

Follow the cluster-level flow from durable repository storage through snapshot creation and on-demand restoration. section 14.4

How Elasticsearch in Action, Second Edition covers it

How deep it goes

Explains repository registration, full or selective creation, incremental backups, restoration, metadata, and deletion through REST and Kibana.

Examples

Uses production snapshot names, movie and review index patterns, excluded old indexes, incident metadata, and HTTP deletion.

What it assumes

Assumes basic Elasticsearch administration and REST or Kibana use while teaching repository registration and snapshot workflow.

What you can do after

Operate/configure Elasticsearch backups by registering repositories, creating targeted snapshots, restoring data, and deleting snapshots.

How it connects

Connects backup and restore with repositories, indexes, data streams, cluster state, cloud storage, and index migration.

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  Architecting an Apache Iceberg LakehouseA consistent versioned representation of a table's state, including the data files that constitute that state.
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  PostgreSQL Mistakes and How to Avoid ThemA filesystem snapshot is a point-in-time representation of files and filesystem state that can be restored later.
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  Amazon Web Services in Action, Third Edition: An in-depth guide to AWSA data snapshot is a point-in-time copy of stored data that can be used to restore an earlier state.
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  API Design PatternsA snapshot is a point-in-time view of stored data that preserves the data state as of a particular instant.
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  MongoDB 8.0 in Action, Third EditionA backup snapshot is a stored point-in-time copy of a database deployment's data for recovery.
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  100 SQL Server Mistakes and How to Avoid ThemA database snapshot is a read-only, point-in-time view of a SQL Server database that preserves pages as they existed when the snapshot was created.
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  Machine Learning Platform EngineeringA data snapshot is a persisted representation of data captured at a particular point in time.
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  ASP.NET Core in Action, 3eA tracking snapshot is a stored set of an entity's property values used to compare its original and current state.
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  Java Persistence with Spring Data and Hibernate epubA state snapshot is a stored copy of an entity's state used to detect changes made to the managed instance.
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  Akka in Action, Second EditionA snapshot is a persisted representation of a persistent actor's state at a point in its event history that accelerates recovery.

Compare how 11 books explain snapshot →

Related concepts

• resource revisionincludes · A resource revision is a distinct historical state of an API resource that can be retrieved or otherwise operated on separately from other states.
• provisioning toolused by · Software that creates and prepares infrastructure resources and manages their infrastructure-level dependencies.
• full backupkind of · A full backup is a complete copy of all selected data or system state at a particular point in time.
• backup and restoreused by · Backup and restore is the practice of preserving copies of data or system state and using them to recover it after loss, damage, or failure.
• snapshot isolationused by · Snapshot isolation is a transaction-isolation method in which each transaction reads a consistent versioned snapshot of committed data while concurrent writes are isolated from that view.

This explainer was generated by Manning's knowledge graph from the text of Elasticsearch in Action, Second Edition. The section links point to the parts of the book it draws on.