Elasticsearch, ELk Stack

Hi, I would like to ask you for help. We are already using Elasticsearch for search on the webpages. I want to start with Elastic Stack: Is it possible to use this Elasticsearch also for Elastic Stack .. ? Or do I have to install new elasticsearch?

Welcome!

I don't really understand the question. Could you rephrase it?

Thank You
Yes sure,

  1. We have an elasticsearch and use as a search machine
  2. Now we would like to start to use Elk Stack - elasticsearch, logstash and kibana . Is it possible to konfigurate Kibana with the elasticsearch, (which we already have) or do we need to install new one.

You can just install Kibana and others and connect to the existing cluster.

But depending on the use cases it might be worthwhile to create a new cluster.
If for example one cluster is used for your website search (so for your customers) and the new use case you want to add is for your internal logs, I'd create another cluster.
So the log use case won't have an impact on the web site if the former is overloaded.

Makes sense?

yes, it makes sense. Thank you