Why would you think your nodes would be able to be perfectly connected to that redis node, but wouldn’t be able to do the same for the erlang cluster? An approach like this can help, but is not a solution. It has the same problems you have right now.
One of the more recent OTP versions did indeed implement a feature, which does prevent cluster partitions. That’s something else though. It kicks nodes out of the cluster, which are not able to establish a connection to all other nodes on the cluster, but only to some.
This does not prevent true split brain situations where you have a node or even a subset of the cluster completely separate from other nodes/subsets.
