Upgrade major version

When the OpenSearch instance was created, it was set up with the major version that was current at the time. If you want to upgrade to a newer major version, you can do so by setting the version in the OpenSearch resource:

opensearch.yaml

apiVersion: aiven.io/v1alpha1
kind: OpenSearch
metadata:
  labels:
    team: myteam
  name: opensearch-myteam-myinstance
  namespace: myteam
spec:
  plan: hobbyist
  project: nav-dev
  userConfig:
    opensearch_version: "2"

Check out the OpenSearch resource documentation for more details on the userConfig field and other available options.