I’m in the process of switching over from Elasticsearch and currently we’re using NewRelic to instrument our app. NewRelic supports specific instrumentation for the Elasticsearch gem but no support for the OpenSearch gem exists at the moment.
I’ve opened a feature request on their public issue tracker to remedy this. Please show your support by reacting or commenting on this issue Add instrumentation for OpenSearch · Issue #2228 · newrelic/newrelic-ruby-agent · GitHub and making it a reality!