opensearch

open-source search and analytics engine derived from Elasticsearch 7

TLDR

Start OpenSearch

$ opensearch

Start with specific config

$ opensearch -E path.data=[/data] -E path.logs=[/logs]

Run as a daemon (background)

$ opensearch -d

Check cluster health

$ curl -XGET "http://localhost:9200/_cluster/health?pretty"

Index a document

$ curl -XPOST "http://localhost:9200/[index]/_doc" -H 'Content-Type: application/json' -d '{"field":"value"}'

OpenSearch is an open-source search and analytics engine derived from Elasticsearch 7.10.2. It provides full-text search, logging, and analytics capabilities.OpenSearch includes OpenSearch Dashboards (forked from Kibana) for visualization.

PARAMETERS

-d

Run as a daemon (in the background).

-p file

Write the process ID to file.

-E setting=value

Set a configuration setting (e.g., -E cluster.name=myCluster).

-q, --quiet

Suppress normal output to stdout.

-v, --verbose

Enable verbose output.

CONFIGURATION

$ /etc/opensearch/opensearch.yml
/etc/opensearch/jvm.options

REST API

$ # Create index
curl -XPUT "localhost:9200/myindex"

# Search
curl -XGET "localhost:9200/myindex/_search?q=field:value"

# Delete index
curl -XDELETE "localhost:9200/myindex"

CAVEATS

Requires Java. Memory-intensive; configure heap size. Security plugin enabled by default.

HISTORY

OpenSearch was created by Amazon Web Services in 2021 as an open-source fork of Elasticsearch after Elastic changed its license.