No shards? about mongo-cluster-docker HOT 4 CLOSED

--- Sharding Status --- 
  sharding version: {
    "_id" : 1,
    "minCompatibleVersion" : 5,
    "currentVersion" : 6,
    "clusterId" : ObjectId("58a1bfb6b0ad6efb4f160875")
}
  shards:
    {  "_id" : "rs1",  "host" : "rs1/172.18.0.10:27017,172.18.0.4:27017,172.18.0.5:27017",  "state" : 1,  "tags" : [ "US" ] }
    {  "_id" : "rs2",  "host" : "rs2/172.18.0.3:27017,172.18.0.7:27017,172.18.0.8:27017",  "state" : 1,  "tags" : [ "EU" ] }
  active mongoses:
    "3.4.1" : 1
  balancer:
    Currently enabled:  yes
    Currently running:  yes
        Balancer lock taken at Mon Feb 13 2017 15:16:28 GMT+0100 (Central Europe Standard Time) by ConfigServer:Balancer
    Failed balancer rounds in last 5 attempts:  0
    Migration Results for the last 24 hours: 
        1 : Success
  databases:
    {  "_id" : "test",  "primary" : "rs1",  "partitioned" : true }
        test.sample
            shard key: { "location" : 1, "_id" : 1 }
            unique: false
            balancing: true
            chunks:
                rs1 4
                rs2 1
            { "location" : { "$minKey" : 1 }, "_id" : { "$minKey" : 1 } } -->> { "location" : "EU", "_id" : { "$minKey" : 1 } } on : rs1 Timestamp(2, 1) 
            { "location" : "EU", "_id" : { "$minKey" : 1 } } -->> { "location" : "EU", "_id" : { "$maxKey" : 1 } } on : rs2 Timestamp(2, 0) 
            { "location" : "EU", "_id" : { "$maxKey" : 1 } } -->> { "location" : "US", "_id" : { "$minKey" : 1 } } on : rs1 Timestamp(1, 3) 
            { "location" : "US", "_id" : { "$minKey" : 1 } } -->> { "location" : "US", "_id" : { "$maxKey" : 1 } } on : rs1 Timestamp(1, 4) 
            { "location" : "US", "_id" : { "$maxKey" : 1 } } -->> { "location" : { "$maxKey" : 1 }, "_id" : { "$maxKey" : 1 } } on : rs1 Timestamp(1, 5) 
             tag: EU  { "location" : "EU", "_id" : { "$minKey" : 1 } } -->> { "location" : "EU", "_id" : { "$maxKey" : 1 } }
             tag: US  { "location" : "US", "_id" : { "$minKey" : 1 } } -->> { "location" : "US", "_id" : { "$maxKey" : 1 } }