Manually Upgrading an OpenSearch Cluster
Upgrade an OpenSearch cluster yourself instead of relaying on the automatic software upgrade capability.
Search with OpenSearch supports several concurrent versions of OpenSearch. When you create a cluster, by default, it's based on the latest supported version of OpenSearch. For existing clusters using older versions, you can upgrade the cluster to use the functionality available in the latest version of OpenSearch.
The upgrade process depends on whether you're doing a major version upgrade or a minor version upgrade. A major version upgrade is indicated by a change in the first number in the build number, for example, 1.2.4 to 2.3.0. A minor version upgrade is indicated by a change in the second number in the build number, for example, 2.3.0 to 2.11.
When you're doing a major version upgrade, use the upgrade process described in this topic. For minor version upgrades, you can use the inline upgrade functionality described in OpenSearch Cluster Software Upgrades.