I don't know why my cluster stoped working when I change my data.path.
PS : I kept the rights when I copied the file /var/lib/elasticsearch
logs node 1 :
[WARN ][o.e.g.DanglingIndicesState] [network-1] [[.kibana/VVs4bcERSKeSgufbSY1bwA]] can not be imported as a dangling index, as index with same name already exists in cluster metadata
logs node 2 :
[2018-07-17T00:59:05,062][INFO ][o.e.x.m.MlDailyMaintenanceService] triggering scheduled [ML] maintenance tasks [2018-07-17T00:59:05,078][INFO ][o.e.x.m.a.TransportDeleteExpiredDataAction] [network-2] Deleting expired data [2018-07-17T00:59:05,143][INFO ][o.e.x.m.a.TransportDeleteExpiredDataAction] [network-2] Completed deletion of expired data [2018-07-17T00:59:05,144][INFO ][o.e.x.m.MlDailyMaintenanceService] Successfully completed [ML] maintenance tasks [2018-07-17T01:30:01,385][INFO ][o.e.c.m.MetaDataDeleteIndexService] [network-2] [logstash-2018.07.15/1Mx8GasOTFqFeoS-k3LBzg] deleting index