All shards are placed to the first node about elasticsearch-cluster-runner HOT 3 OPEN

I've copied these settings from your test code and now the index is splitted evenly:

                settingsBuilder.put("http.cors.enabled", true);
                settingsBuilder.put("http.cors.allow-origin", "*");
                settingsBuilder.putArray("discovery.zen.ping.unicast.hosts", "localhost:9301-9305");

from elasticsearch-cluster-runner.

So, it is better to add these settings automatically if more than one shard is added to the cluster. I wonder why standalone Elasticsearch does not require these settings? Because it assigns ports automatically?

from elasticsearch-cluster-runner.

Our plugin sets transport.tcp.port to specific port(9301-9303) for 3 nodes,
but standalone elasticsearch uses 9300-9400(range).
I think it's difficult to change the default value of our plugin
because the plugin manages an available port for transport.

from elasticsearch-cluster-runner.