We have 6 node elasticsearch cluster. Node 1 is master and Node 2 and 6 are master eligible.
Node 3, 4, 5, 6 are data nodes. Node 1,2,3,4,5 have same rack_id and Node6 has a different rack_id.
When we have more than 85% of disk utilization on data nodes, we identified our .security index going amber.
If our Node 6 gets isolated from the cluster, we could not login to kibana until the Node6 comes backs to the cluster.
I believe this is due to .security index going amber.
What should i do to make sure we have access to the cluster, when only Node6 goes down?