When Rolling upgrades from Elasticsearch 6.8 to 7.x, The Kibana likely be unavailable

Elastic Stack Kibana
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When Rolling upgrades from Elasticsearch 6.8 to 7.x, The Kibana likely be unavailable.

I prepared to roll upgrade from Elasticsearch 6.8 to 7.x, But i found the kiabana likely be unavailable.

If i used kiabana 6.8.23 ,it would report a error that the following incompatible nodes in your cluster: v7.11.2.

If id used kiabana 7.11.2, it would report a error that this version of Kibana (v7.11.2) is incompatible with the following Elasticsearch nodes in your cluster: v6.8.23.

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From Elasticsearch to Kibana

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It would help if you provide the full errors or screenshots about what you are saying.
What are the elasticsearch logs? Did you upgrade all the nodes? Did you follow the documentation?

Some possibilities:

  • Reindex from the 6.8 cluster directly into a 8.15.0 cluster.
  • Follow what the upgrade assistant is telling you if anything

But again, I'm not sure about what you are saying here.

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Kibana does not support rolling upgrades.

To upgrade it you need to stop Kibana, upgrade your Elasticsearch nodes, and then upgrade Kibana.

How many nodes do you have configured in your kibana.yml ? If you have all your nodes for example, you will need to upgrade all the nodes before upgrading Kibana.

If you have just one onde for example, you need to upgrade this node and then you can upgade Kibana while you upgrade the rest of your Elasticsearch nodes.

The nodes that Kibana communicate needs to be upgraded before Kibana.