If you’re running OpenSearch, understanding the end-of-life schedule for each version is crucial for maintaining security and compliance. 2025 is particularly significant as many legacy versions will reach end-of-support, potentially leaving systems without security updates. This comprehensive guide covers the latest EOL (End of Life) and EOS (End of Support) schedules for both open-source OpenSearch and Amazon OpenSearch Service.
1. What is OpenSearch? A New Choice for Search Engines
OpenSearch is an open-source search and analytics suite distributed under the Apache 2.0 license. Forked from Elasticsearch 7.10, this solution is widely used for log analytics, real-time application monitoring, clickstream analysis, and various other use cases.
OpenSearch maintains backward compatibility with Elasticsearch APIs while operating as a fully open-source project, making it a trusted alternative for many organizations. As an AWS-led project, it ensures stable development and reliable support.
2. Open-Source OpenSearch Version Support Status
Open-source OpenSearch follows Semantic Versioning (SemVer) policy, introducing breaking changes only in major versions.
Major Version Support Summary
| Major Version | Latest Minor Version | Status | Initial GA Release | Maintenance Start | Maintenance End |
|---|---|---|---|---|---|
| 1.x | 1.3.20 | Deprecated | July 12, 2021 | May 26, 2022 | May 6, 2025 |
| 2.x | 2.19.3 | Maintenance | May 26, 2022 | May 6, 2025 | Upon 4.0 GA Release |
| 3.x | 3.2.0 | Current | May 6, 2025 | N/A | N/A |
Detailed Version Release Status
OpenSearch 3.x Line (Currently Under Active Development)
- 3.2.0 (Released August 19, 2025)
- 3.1.0 (Released June 24, 2025)
- 3.0.0 (Released May 6, 2025)
- 3.0.0-beta1, 3.0.0-alpha1 (Pre-release versions)
OpenSearch 2.x Line (Maintenance Mode)
- 2.19 series: 2.19.3, 2.19.2, 2.19.1, 2.19.0
- 2.18 series: 2.18.0
- 2.17 series: 2.17.1, 2.17.0
- 2.16 series: 2.16.0
- 2.15 series: 2.15.0
- 2.14 series: 2.14.0
- 2.13 series: 2.13.0
- 2.12 series: 2.12.0
- 2.11 series: 2.11.1, 2.11.0
- 2.10 series: 2.10.0
- 2.9 ~ 2.0 series: 2.9.0, 2.8.0, 2.7.0, 2.6.0, 2.5.0, 2.4.1, 2.4.0, 2.3.0, 2.2.1, 2.2.0, 2.1.0, 2.0.1, 2.0.0
OpenSearch 1.x Line (End of Support)
- 1.3 series: 1.3.20, 1.3.19, 1.3.18, 1.3.17, 1.3.16, 1.3.15, 1.3.14, 1.3.13, 1.3.12, 1.3.11, 1.3.10, 1.3.9, 1.3.8, 1.3.7, 1.3.6, 1.3.5, 1.3.4, 1.3.3, 1.3.2, 1.3.1, 1.3.0
- 1.2 series: 1.2.4, 1.2.3, 1.2.0
- 1.1 series: 1.1.0
- 1.0 series: 1.0.1, 1.0.0
Key Changes and Notices
- OpenSearch 1.x deprecated as of May 6, 2025: No more security patches or bug fixes are provided.
- OpenSearch 2.x in maintenance mode: New features are not added, but security patches and bug fixes continue.
- OpenSearch 3.x under active development: New features and improvements are continuously added.
3. Amazon OpenSearch Service End-of-Support Schedule
Amazon OpenSearch Service operates its own support policy separate from the open-source version. According to the latest information announced by AWS in November 2024, many legacy versions will reach end of Standard Support on November 7, 2025.
Amazon OpenSearch Service Complete Supported Versions
Currently supported versions on Amazon OpenSearch Service:
OpenSearch Versions
- 3.1 (Latest)
- 2.19, 2.17, 2.15, 2.13, 2.11 (Active support)
- 2.9, 2.7, 2.5, 2.3 (End-of-support scheduled)
- 1.3, 1.2, 1.1, 1.0 (Partial end-of-support scheduled)
Elasticsearch Versions (Legacy)
- 7.10, 7.9, 7.8, 7.7, 7.4 (Latest 7.x series)
- 7.1 (End-of-support scheduled)
- 6.8, 6.7, 6.5, 6.4, 6.3, 6.2, 6.0 (Partial end-of-support scheduled)
- 5.6, 5.5, 5.3, 5.1 (End-of-support scheduled)
- 2.3, 1.5 (Legacy, end-of-support scheduled)
Elasticsearch Version End-of-Support Schedule
| Software Version | Standard Support End | Extended Support End | Notes |
|---|---|---|---|
| Elasticsearch 1.5 | November 7, 2025 | November 7, 2026 | Legacy version |
| Elasticsearch 2.3 | November 7, 2025 | November 7, 2026 | Legacy version |
| Elasticsearch 5.1 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 5.3 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 5.5 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 5.6 | November 7, 2025 | November 7, 2028 | 36-month extended support |
| Elasticsearch 6.0 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 6.2 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 6.3 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 6.4 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 6.5 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 6.7 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 6.8 | Not announced | Not announced | Recommended 6.x version |
| Elasticsearch 7.1 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 7.4 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 7.7 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 7.8 | November 7, 2025 | November 7, 2026 | – |
| Elasticsearch 7.9 | Not announced | Not announced | Recommended 7.x version |
| Elasticsearch 7.10 | Not announced | Not announced | Final open-source version |
OpenSearch Version End-of-Support Schedule
| Software Version | Standard Support End | Extended Support End | Notes |
|---|---|---|---|
| OpenSearch 1.0 | November 7, 2025 | November 7, 2026 | Initial version |
| OpenSearch 1.1 | November 7, 2025 | November 7, 2026 | – |
| OpenSearch 1.2 | November 7, 2025 | November 7, 2026 | – |
| OpenSearch 1.3 | Not announced | Not announced | Final 1.x version |
| OpenSearch 2.3 | November 7, 2025 | November 7, 2026 | – |
| OpenSearch 2.5 | November 7, 2025 | November 7, 2026 | – |
| OpenSearch 2.7 | November 7, 2025 | November 7, 2026 | – |
| OpenSearch 2.9 | November 7, 2025 | November 7, 2026 | – |
| OpenSearch 2.11 | Not announced | Not announced | Active support |
| OpenSearch 2.13 | Not announced | Not announced | Active support |
| OpenSearch 2.15 | Not announced | Not announced | Active support |
| OpenSearch 2.17 | Not announced | Not announced | Active support |
| OpenSearch 2.19 | Not announced | Not announced | Active support |
| OpenSearch 3.1 | Not announced | Not announced | Latest version |
4. Understanding Standard Support vs Extended Support
Amazon OpenSearch Service provides two levels of support:
Standard Support
- Includes: Regular bug fixes, security patches, new feature updates
- Additional cost: None
- Recommended for: Production environments
Extended Support
- Includes: Critical security patches and OS patches only
- Additional cost: Flat fee per NIH (Normalized Instance Hour)
- Example: $0.0065/NIH in US East (N. Virginia) region
- Use case: When immediate upgrade is not feasible
Extended Support Cost Calculation
Extended Support costs are calculated using the formula: Total cost = Additional fee × Instance hours × Normalization factor
| Instance Size | Normalization Factor | Instance Size | Normalization Factor |
|---|---|---|---|
| nano | 0.25 | xlarge | 8 |
| micro | 0.5 | 2xlarge | 16 |
| small | 1 | 4xlarge | 32 |
| medium | 2 | 8xlarge | 64 |
| large | 4 | 16xlarge | 128 |
Calculation Example: Running m7g.medium.search instance for 24 hours
- Standard cost: $0.068 × 24 hours = $1.632
- Extended Support additional cost: $0.0065 × 24 hours × 2 (medium factor) = $0.312
- Total cost: $1.944
5. Upgrade Strategy and Recommendations
Mandatory Upgrades Before November 7, 2025
The following versions must be upgraded before November 7, 2025:
Elasticsearch Legacy Versions:
- Elasticsearch 1.5, 2.3 (Very old legacy)
- Elasticsearch 5.1, 5.3, 5.5, 5.6 (Entire 5.x series)
- Elasticsearch 6.0, 6.2, 6.3, 6.4, 6.5, 6.7 (Early-mid 6.x versions)
- Elasticsearch 7.1, 7.4, 7.7, 7.8 (Early-mid 7.x versions)
OpenSearch Early Versions:
- OpenSearch 1.0, 1.1, 1.2 (Early 1.x versions)
- OpenSearch 2.3, 2.5, 2.7, 2.9 (Early-mid 2.x versions)
Recommended Upgrade Paths by Version
| Current Version | Recommended Upgrade Path | Upgrade Difficulty | Notes |
|---|---|---|---|
| Elasticsearch 1.5-2.3 | → OpenSearch 2.19+ or 3.x | ⭐⭐⭐⭐⭐ | Major changes, thorough testing required |
| Elasticsearch 5.x | → OpenSearch 2.19+ or 3.x | ⭐⭐⭐⭐ | Index compatibility check needed |
| Elasticsearch 6.x | → Elasticsearch 6.8 → OpenSearch 2.19+ | ⭐⭐⭐ | Step-by-step upgrade recommended |
| Elasticsearch 7.1-7.8 | → Elasticsearch 7.10 → OpenSearch 2.19+ | ⭐⭐ | Relatively safe path |
| OpenSearch 1.0-1.2 | → OpenSearch 1.3 → OpenSearch 2.19+ | ⭐⭐⭐ | Upgrade to 1.3 first |
| OpenSearch 2.3-2.9 | → OpenSearch 2.11+ or 3.x | ⭐⭐ | Minor upgrade |
| OpenSearch 2.11+ | → OpenSearch 3.x (optional) | ⭐ | Access to latest features |
Priority-Based Classification
🔴 Critical (Must complete before November 7, 2025)
- Elasticsearch 1.5, 2.3, 5.x, 6.0-6.7, 7.1-7.8
- OpenSearch 1.0-1.2, 2.3-2.9
🟡 Recommended (Plan within 1 year)
- Elasticsearch 6.8, 7.9 (Support schedule not announced but preparation needed)
- OpenSearch 1.3 (1.x line end-of-support)
🟢 Safe (Can continue using for now)
- Elasticsearch 7.10 (Final open-source version)
- OpenSearch 2.11+, 3.x (Active support)
6. Upgrade Tools and Resource Utilization
AWS-Provided Tools
- Migration Assistant for Amazon OpenSearch Service
- Automated migration tool
- Support for large-scale data migration
- OpenSearch Upgrade Guide
- Detailed step-by-step guide
- Version-specific precautions
- CloudFix Tool
- Automatic identification of affected clusters
- Extended Support cost estimation
- Upgrade recommendations
Migration Checklist
- [ ] Check current version and EOL date
- [ ] Select target version
- [ ] Review compatibility matrices
- [ ] Establish backup plan
- [ ] Build test environment
- [ ] Coordinate downtime schedule
- [ ] Prepare rollback plan
- [ ] Set up monitoring dashboard
7. Continuous Monitoring and Management
Version Management Best Practices
- Regular version checks: Quarterly review of support status for versions in use
- Upgrade calendar: Register EOL dates in calendar with advance notifications
- Auto-update policies: Consider enabling automatic updates when possible
Resources and Alert Setup
- Bookmark OpenSearch Release Page
- Regular check AWS OpenSearch Service Documentation
- Subscribe to RSS feed: endoflife.date OpenSearch feed
OpenSearch version management is not just a technical task—it’s a core responsibility for ensuring service stability and security. With many legacy versions reaching end-of-support after November 7, 2025, establishing a systematic upgrade plan now is crucial.
While Extended Support can provide temporary relief, it comes with additional costs and limits access to new features. We recommend upgrading to the latest versions to benefit from improved performance, security, and new capabilities.
If you encounter questions or technical issues during the upgrade process, you can seek assistance through AWS Support or the OpenSearch Community Forum.