Elasticsearch to OpenSearch Migration Services
Migrate from Elasticsearch to OpenSearch with confidence. OpenSearch is the open-source fork of Elasticsearch 7.10 maintained by AWS with full API compatibility, no proprietary licensing restrictions, and a rapidly growing feature set including advanced ML and vector search capabilities.
BigData Boutique provides end-to-end Elasticsearch to OpenSearch migration services with zero downtime, zero data loss, and deep expertise in both platforms. As the world's leading OpenSearch consulting partner, led by OpenSearch Ambassador Itamar Syn-Hershko, we have migrated dozens of production Elasticsearch clusters to self-managed OpenSearch and to Amazon OpenSearch Service.
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Elasticsearch to OpenSearch Migration Services
Our migration services cover every aspect of moving from Elasticsearch to OpenSearch, from initial compatibility assessment through cutover and post-migration optimization.
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Comprehensive compatibility assessment identifying version gaps, breaking changes, and index settings requiring adjustment
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Zero-downtime migration with parallel cluster operation, snapshot restore, and cross-cluster replication for live cutover
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Index template, mapping, and settings migration with automatic translation of deprecated Elasticsearch-specific configurations
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Query DSL and aggregation compatibility validation with automatic detection and remediation of Elasticsearch-only query syntax
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Kibana to OpenSearch Dashboards migration preserving saved searches, visualizations, dashboards, and alerting rules
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Post-migration optimization and support to take full advantage of OpenSearch-native features and cost-reduction opportunities
Why Migrate from Elasticsearch to OpenSearch?
In 2021, Elastic changed its licensing model to SSPL, restricting commercial use. OpenSearch was created by AWS as an Apache 2.0 open-source fork of Elasticsearch 7.10, ensuring continued open-source availability and innovation. OpenSearch has since developed its own roadmap with ML-powered search, k-NN vector search, anomaly detection, and cross-cluster replication features that go beyond the original fork.
Organizations on Amazon OpenSearch Service (the managed AWS offering) are already running OpenSearch. For those still running self-managed Elasticsearch, migrating to OpenSearch unlocks access to Amazon OpenSearch Service with no per-node licensing, automated patching, and native AWS integrations -typically reducing total infrastructure cost by 30-50%.
With full API compatibility for Elasticsearch 7.10 clients, most applications require zero code changes. Our migration services make this transition fast, safe, and production-ready.
We Can Help You
Migration Compatibility & Versioning
OpenSearch maintains wire compatibility with Elasticsearch 7.10 clients. Most applications running against Elasticsearch 6.x, 7.x, or 8.x can be migrated to OpenSearch 1.x or 2.x with minimal or no application changes.
Our compatibility assessment identifies specific query patterns, plugin dependencies, or API usages that may require adjustment. We provide a detailed compatibility report and handle all required changes as part of the migration engagement.
Our Elasticsearch to OpenSearch Migration Approach
1. Discovery & assessment
We analyze your Elasticsearch deployment: search use cases, index mappings, query patterns, plugin dependencies, and performance requirements. You get a compatibility report, a migration plan, and a timeline estimate before any data moves.
2. Compatibility & plugin mapping
We map Elasticsearch configurations, plugins, and X-Pack features to their OpenSearch equivalents, update client libraries, and rewrite Elasticsearch-only queries and aggregations so they behave the same on OpenSearch.
3. Data migration & validation
Depending on versions and volume we use snapshot/restore, reindex-from-remote, or dual writes. Every index is validated for document counts, mappings, and search quality against the source cluster.
4. Cutover & optimization
We run both clusters in parallel, shift traffic gradually, and keep a rollback path until you sign off. After cutover we tune the OpenSearch cluster and adopt OpenSearch-native features such as neural, vector, and hybrid search.
Migrating to Amazon OpenSearch Service
Many of our Elasticsearch to OpenSearch migrations land on Amazon OpenSearch Service. As an AWS partner with the Amazon OpenSearch Service Delivery designation, we work closely with AWS teams, and eligible migrations are often partially sponsored and shepherded by AWS, which lowers the cost of the project for you.
Already on Amazon OpenSearch Service? We also move self-managed OpenSearch to the managed service and upgrade legacy Amazon Elasticsearch Service domains before extended-support charges apply.
Still deciding? Read our OpenSearch vs Elasticsearch comparison and our technical guide to migrating data from Elasticsearch to OpenSearch. After the move, our 24/7 OpenSearch support and OpenSearch consulting teams keep the new cluster healthy.
FAQ
Is OpenSearch fully compatible with Elasticsearch?
OpenSearch is API-compatible with Elasticsearch 7.10 for most common operations. REST API, Query DSL, and index management APIs are compatible. Some advanced commercial Elasticsearch features (security, alerting, ML) are replaced by OpenSearch equivalents. Our compatibility assessment identifies any gaps specific to your usage.
Can I migrate without downtime?
Yes. We use a combination of snapshot/restore, cross-cluster replication, and traffic shifting to achieve zero-downtime migrations. New documents are written to both clusters during the cutover window, and we validate data consistency before switching read traffic to OpenSearch.
What happens to my Kibana dashboards?
Kibana dashboards can be migrated to OpenSearch Dashboards (the OpenSearch equivalent) with minimal manual effort. We handle the migration of saved searches, visualizations, dashboards, and index patterns. Some features specific to Kibana's commercial plugins may require equivalent OpenSearch configurations.
Which OpenSearch version should I target?
We recommend targeting the latest stable OpenSearch version unless specific constraints apply. OpenSearch 2.x offers the most features and longest support lifecycle. We assess your use case and application compatibility to recommend the right target version.
Can you help migrate to Amazon OpenSearch Service?
Yes, we are an AWS Advanced Consulting Partner with the Amazon OpenSearch Service Delivery designation. We frequently migrate self-managed Elasticsearch clusters to Amazon OpenSearch Service, and can often facilitate AWS-sponsored migration support for eligible transitions.
How long does an Elasticsearch to OpenSearch migration take?
Most migrations take 2–8 weeks depending on cluster size, data volume, index complexity, and whether a managed service migration is involved. We provide a detailed timeline estimate after the initial compatibility assessment.
Does AWS fund Elasticsearch to OpenSearch migrations?
Often, yes. Migrations to Amazon OpenSearch Service are frequently eligible for partial AWS sponsorship. As an AWS partner with the Amazon OpenSearch Service Delivery designation, we check eligibility during the assessment and handle the funding request with AWS on your behalf.
Should I migrate to OpenSearch or upgrade Elasticsearch?
It depends on your licensing constraints, the features you rely on, and where you want to run. OpenSearch is Apache 2.0 licensed and available as a managed service on AWS, while newer Elasticsearch releases include features that OpenSearch implements differently. Our assessment compares both paths for your workload before you commit.
Ready to Get Started?
Get in touch with our migration experts or schedule a meeting to discuss your needs.