The _mount API is an Elasticsearch interface for mounting snapshots so their contents can be searched.
The _mount API makes snapshot contents searchable by mounting snapshots as indexes. This turns low-cost archival backups into search capacity without adding conventional replicas. section 14.4.6
Key operational points:
Use mounted snapshots for selected queries when replica storage and maintenance costs are concerns. section 14.4.6
Searchable snapshots require an Enterprise license; implementation details are deferred to the Elasticsearch documentation. section 14.4.6
How Elasticsearch in Action, Second Edition covers it
How deep it goes
Defines the search and cost rationale but stops short of implementation details and mounting syntax.
Examples
Uses low-cost archival snapshots as searchable indexes for selected queries.
What it assumes
Assumes familiarity with snapshots, backups, replicas, and Elasticsearch search queries.
What you can do after
Evaluate searchable snapshots as a lower-cost alternative to adding replicas, while recognizing their licensing and implementation constraints.
How it connects
Connects snapshots with search queries, replicas, archival storage, and Elasticsearch licensing.
searchable snapshotimplements · A searchable snapshot is a snapshot that can be mounted and queried as indexed data without first being fully restored.
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.
