Deprecation: Aiven for OpenSearch® version 1

Aiven for OpenSearch® version 1.x will reach its end-of-life (EOL) on July 26, 2026, following its deprecation upstream. All services running version 1.x must be upgraded to version 2.x to ensure continued support, security, and performance.

Key timeline

• End-of-life (EOL) date: July 26, 2026
• Automatic upgrades: Starting July 26, 2026, any services remaining on version 1.x will be automatically upgraded to version 2.19 during their next scheduled maintenance window.

Why upgrade?

Upgrading to OpenSearch 2.x provides significant technical advantages:

• Enhanced performance: Version 2.x is approximately 6x faster than version 1.3.
• Reduced storage footprint: Zstandard compression reduces on-disk storage requirements by 15% to 30%.

Recommended Actions

To ensure a smooth transition and verify application compatibility, we recommend taking the following steps before the July deadline:

1. Review breaking changes: Consult the OpenSearch 2.0 breaking changes guide to identify potential impacts.
2. Test via forking: We suggest forking your service at its current version, then upgrading the fork to version 2.19 to test for incompatibilities in a safe environment.
3. Perform manual upgrade: Upgrade your services at your convenience before the EOL date.