Elastic and kibana upgrade from 6.6 to 7.0

[Mariajosephina]

Hi @all

This is regarding a query on upgrading Elasticsearch & kibana.
The current version of Elastic search & Kibana in our organization is 6.6.1 used to storing RPA logs.
I am planning to upgrade to 7.x or 8.x

Can someone please help me in providing detailed steps and instructions to do the
I am new to this Elastic search and kibana. So i have no idea on how to do the upgrade and not able to understand the terminologies/steps mentioned in documentation. could you please provide deep understanding and guide me to complete the upgrade activity.

While checking 7.0 Upgrade assistant, i saw the below critical issue :
"nodes which do not have discovery configured"

[dadoonet (David Pilato)]

Hey

The easiest path IMO is to create a new 8.15.0 cluster and reindex the data from the 6.6 cluster.

Otherwise you need to:

• Upgrade FIRST to 6.8.latest
• Run the upgrade assistant and fix ALL the issues
• Upgrade to 7.17.latest
• Run the upgrade assistant and fix ALL the issues which probably will ask you to rewrite the ol 6.x indices into a 7.17 compatible format
• Upgrade to 8.15.0

[dadoonet (David Pilato)]

Apparently you opened the same question already at

Upgrading elastic search & kibana from 6.6.1 to 7.x or 8.x

Hi @all This is regarding a query on upgrading Elasticsearch & kibana. The current version of Elastic search & Kibana in our organization is 6.6.1 used to storing RPA logs. I am planning to upgrade to 7.x or 8.x Could you please help me in providing detailed steps to do the upgrade activity for Kibana and Elasticsearch. Are there any prerequisites to directly upgrade to any 7.x or 8.x versions? Is 7.x and 8.x versions of Elastic search are free or paid versions?

Let's keep all that in the same place.