We have 6 node ELK cluster and all of them are configured to act as master and data node. Out of 6 nodes two nodes are consuming more disk space which is at 93%, other nodes are at 70% to 80%. We have tried configuring cluster.shard.route.rebalancing but no luck. So basically disk/shard allocation is not happening properly. We are using ELK 7.8.1 version.
Let me know if anyone has any suggestions.