We have Elasticsearch cluster of 3 nodes where 1 node is dedicated master and 2 nodes are dedicated data nodes. we have around 200GB of data on server and heavy _bulk and _search operations. The nodes configuration is
Master node :- RAM - 8GB Cores - 4 First Data node :- RAM - 20GB Cores - 8 Second Data node :- RAM - 8GB Cores - 4
5 shards and 1 replica for all nodes.
We are getting
socket hang up error very frequently for _bulk and _search both, we tried to make all nodes master eligible but it did not work.