When upgrading a Bonsai cluster’s Elasticsearch or OpenSearch minor version, what is the likely impact to availability of the system and what are the possible recovery steps?

There are 2 options for a minor version upgrade.

‍Option 1 - Enterprise Plans

‍Bonsai clusters on Enterprise plans can send in a request to support@bonsai.io for our team to perform an in-place minor version upgrade on your behalf. The impact of an in-place minor version upgrade is the same as a rolling restart: there will be a few minutes of read-only mode as it restarts.

‍Option 2 - Non-Enterprise Plans

‍Check out our documentation on Upgrading Major Versions that we also recommend for minor version upgrades. By following our variation of a blue-green strategy outlined in the documentation and assuming you can pause or buffer your updates:

• Version upgrades happen instantaneously
• Can be performed with zero downtime
• Offers recovery steps depending on your use case’s approach