Index is still red after recovery in Elasticsearch. How to turn it green? -

i working es 2.2

after index recovery with

post /_snapshot/s3_repository/snapshot_traces_291215/_restore {     "include_global_state": false } 

my index still red red open traces_v2 3 1

here cluster health:

{    "cluster_name": "burst",    "status": "red",    "timed_out": false,    "number_of_nodes": 1,    "number_of_data_nodes": 1,    "active_primary_shards": 0,    "active_shards": 0,    "relocating_shards": 0,    "initializing_shards": 0,    "unassigned_shards": 6,    "delayed_unassigned_shards": 0,    "number_of_pending_tasks": 0,    "number_of_in_flight_fetch": 0,    "task_max_waiting_in_queue_millis": 0,    "active_shards_percent_as_number": 0 } 

i sure recovery complete. checked get /_cat/recovery?v

get /_cat/_shards?v gives me:

index     shard prirep state      docs store ip node  traces_v2 2     p      unassigned                     traces_v2 2     r      unassigned                     traces_v2 1     p      unassigned                     traces_v2 1     r      unassigned                     traces_v2 0     p      unassigned                     traces_v2 0     r      unassigned   

could there version incompatibility between snapshot of 2.1 , es 2.2?

i forced assignation of primaries shards node by.

get _cluster/reroute {     "commands" : [ {           "allocate" : {               "index" : "traces_v2",                "shard" : "2",                "node" : "killer shrike",                "allow_primary" : true           }         }     ] } 

but status still yellow because run es on single node , had 3 replica shards. , replica shards can't run on node has primary shard.

so deleted them setting number of replica shards index 0.

put /_settings {     "index" : {         "number_of_replicas" : 0     } } 

i hope other noob people me!