Log aggregation
centralized logging from microservices

// screenshot of opensearch.org ↗
OpenSearch is the community-driven fork of Elasticsearch, maintained by AWS after Elastic relicensed under SSPL. Distributed search and analytics, Apache 2.0 licensed, with built-in security, alerting, anomaly detection, observability. Drop-in compatible with the Elasticsearch ecosystem (Logstash, Beats, Kibana → OpenSearch Dashboards).
OpenSearch is the community-driven fork of Elasticsearch, maintained by AWS after Elastic relicensed under SSPL. Distributed search and analytics, Apache 2.0 licensed, with built-in security, alerting, anomaly detection, observability. Drop-in compatible with the Elasticsearch ecosystem (Logstash, Beats, Kibana → OpenSearch Dashboards).
It's the answer for teams that want the Elastic Stack without Elastic's license terms or commercial pressure.
Concrete scenarios where teams pick OpenSearch over the SaaS alternative.
centralized logging from microservices
full-text search at scale across millions of documents
log analysis for security events
time-series data + dashboards
k-NN search for AI applications (added in 2.x)
If your team profile matches one of these, OpenSearch is a strong fit out of the box.
running log aggregation at scale (TB+/day)
unifying metrics, logs, traces in one analytics layer
building SIEM workflows on OSS infrastructure
needing distributed full-text + faceted search beyond Meilisearch's scope
rejecting SSPL-licensed Elasticsearch for legal reasons
When evaluating self-hosted options for this category, here are the dimensions on which OpenSearch consistently lands above the alternatives.
The stack you'll plug OpenSearch into — services, protocols, and adjacent apps in the BluixApps catalog.
opensearchproject/opensearch:2.18.0 (release-tagged)/usr/share/opensearch/data for indicesOperational guidance from running this in production — what to do before you scale, what to lock down, what surprises people.
DELETE _all = data lossvm.max_map_count >= 262144 on host9200:9200 · opensearchproject/opensearch:2