I have a cluster that has 3 main and 6 data nodes (2 hot, 1 g, 1 cold and 2 data content, 1 fleet, 1 ml) I got the master log from the car and it has these errors 1-Authentication using apikey failed caught exception while handling client http traffic closing connection2- netty4httpchaneel 3- transport connection to data hot1 close by remote 4- transport node disconnection exception data hot 1 Then it causes the cluster to turn red and the cluster won't turn green until I restart the master
From Elastic Search to Elasticsearch
I do not understand how your cluster is set up. Could you please share the output of the cat nodes API? It sounds like the cluster is not designed for resilience. In any cluster it is recommended to always have 3 master eligible nodes. Do you have this?
It would also help if you shared which version of Elasticsearch you are using as well as the exact, full error messages from the Elasticsearch logs.
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