Downgrade elasticsearch to previous version

Hi All,

I am planning to upgrade my 6 node elk cluster from 7.7 to 7.10.

I am just looking for a scenario when two nodes are upgraded and 3rd node fails. So is there a way to downgrade all the nodes back to v7.7

How is that related to the title you wrote?

You can't downgrade.
Take snapshots (backups) before doing the upgrade.

If you are running on, backups are done automatically.

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