topology our cluster :
we use elasticsearch 6.2.2 OSS version
we have 7 node :
- 1 master
- 6 data node
Currently we have lost a node when we restart that we have a indice cannot assign 2 shards on 4 shards when we see with _cat/shards on reason we have that : UNASSIGNED DANGLING_INDEX_IMPORTED
when we reach on this shards we found also this tag no_valid_shard_copy
after some google search we try that https://medium.com/@remco_verhoef/when-everything-else-fails-cc8a27c679d0 but not works rerouting also not works.
Somebody can explain me how to analyse that and resolve that please ?