Can I use the OpenSearch service?

Yes. To define the OpenSearch service, use the opensearch type in .platform/services.yaml:

<SERVICE_NAME>:
    type: opensearch:<VERSION>
    disk: 256

Note that if you later change the name, it’s treated as an entirely new service. This removes all data from your service. Always backup your data before changing the service.

For more information on this feature, please see the following page in the Platform.sh documentation:

https://docs.platform.sh/add-services/opensearch.html