I've ES 6.2.4 installed on a 4 nodes cluster,
all work fantastic.
We had a network outage for several ours where all the nodes couldn't communicate
The master decided that all the rest of the 3 nodes aren't reachable any longer and disabled them.
I had to shutdown the cluster and turn it back on to get the rest of the nodes discovered back,
any suggestions on a better way to achieve it (especially automatically) ?