I have 3 servers for my cluster Graylog2 on Graylog 2.2.3.
I modify the shard number on “Default index set” 4 to 3 because I have my server number 2 that have 2 folder.
How to delete one folder on this server for to have juste one folder by server ?
every new index will only have 3 shards - that setting does not change any of the current available. That is only for new. So you might want to rotate the index to create a new with only the wanted amount of shards.