I cannot change the replication master in the dashboard via [NodeActions->ChangeReplicationMaster]; the slave node is not in the [Select a Node] pull-down. The same when selecting the multi-master node that is in read-only mode.
I believe GTID replication is active; both nodes have Executed GTIDs. However, only the multi-master in read-only has a Retrieved GTID. Might this be the issue, or can't this action be performed in the community-version?
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