NDB cluster upgrade fails when using explicit nodegroup assignments
(Doc ID 2710961.1)
Last updated on OCTOBER 30, 2020
Applies to:MySQL Cluster - Version 8.0 and later
Information in this document applies to any platform.
After an attempted upgrade ( from versions prior to 8.0.18 ) to 8.0.21, an upgrade error could be received similar to "Illegal configuration change".
This may leave one or more nodes unable to start.
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