Warn user when Kibana version doesn't match Elasticsearch version #124171
Labels
enhancement
New value added to drive a business result
Feature:Upgrade Assistant
Team:Kibana Management
Dev Tools, Index Management, Upgrade Assistant, ILM, Ingest Node Pipelines, and more
This was suggested on Discuss: https://discuss.elastic.co/t/cannot-read-property-aliases-of-undefined/293079/9. Users upgrading between minors sometimes to forget to upgrade Kibana after upgrading Elasticsearch. We can update Upgrade Assistant to surface this information. We should also consider showing the user a global banner, e.g. "Deployment is currently undergoing an upgrade from version 8.4 to 8.6. Performance might be degraded during this time." This would have also helped set expectations in the case of #122103.
See #112907 for an example of how UA surfaces version discrepancies in 7.17.
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