I need to upgrade my system (linux) from ELK 5.4 to 7.6.
I saw several guides about using Upgrade Assistant but it is not exist in Kibana 5.4.
I don't need the old indices and I already delete all indices.
The system consist of 5 hosts. On the master host I have Elasticsearch, Kibana and Logstash. On other 4 hosts I have only Elasticsearch.
What is the right way for doing it?
Thanks in advance