I was pretty excited to have a look at the Open Source version of Elasticsearch.
I can understand the reasons for the fork. However, the way it's managed is like with many Open Source Projects: design of functions does not focus on user requirements (customers in commercial projects) but on the mood and feelings of the developer.
Without a good project coordinator and somebody with a good vision for how the project needs to evolve it won't work - freedom sometimes means nothing left to loose … But it was fun to compare it to Elastic and make it work

Opensearch Installation on Linux (Debian or Ubuntu)

Dashboards Installation on Linux (Debian or Ubuntu)

Run Kibana on standard ports (80 or 443) to access Opensearch Dashboards