sh.status()

?

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mongos> sh.status({"verbose":1})sh.status({"verbose":1}) --- Sharding Status ---   sharding version: {         "_id" : 1,         "minCompatibleVersion" : 5,         "currentVersion" : 6,         "clusterId" : ObjectId("57199835d058c00f4d3281a8") }   shards:         {  "_id" : "shard0000",  "host" : "localhost:30000" }         {  "_id" : "shard0001",  "host" : "localhost:30001" }         {  "_id" : "shard0002",  "host" : "localhost:30002" }   balancer:         Currently enabled:  no         Currently running:  no         Failed balancer rounds in last 5 attempts:  0         Migration Results for the last 24 hours:                 No recent migrations   databases:         {  "_id" : "admin",  "partitioned" : false,  "primary" : "config" }         {  "_id" : "test",  "partitioned" : true,  "primary" : "shard0001" }                 test.users                         shard key: { "username" : 1 }                         chunks:                                 shard0001       22                         { "username" : { "$minKey" : 1 } } -->> { "username" : "user1421" } on : shard0001 Timestamp(1, 0)                         { "username" : "user1421" } -->> { "username" : "user18424" } on : shard0001 Timestamp(1, 1)                         { "username" : "user18424" } -->> { "username" : "user22638" } on : shard0001 Timestamp(1, 2)                         { "username" : "user22638" } -->> { "username" : "user26852" } on : shard0001 Timestamp(1, 3)                         { "username" : "user26852" } -->> { "username" : "user31065" } on : shard0001 Timestamp(1, 4)                         { "username" : "user31065" } -->> { "username" : "user3528" } on : shard0001 Timestamp(1, 5)                         { "username" : "user3528" } -->> { "username" : "user39494" } on : shard0001 Timestamp(1, 6)                         { "username" : "user39494" } -->> { "username" : "user43707" } on : shard0001 Timestamp(1, 7)                         { "username" : "user43707" } -->> { "username" : "user47921" } on : shard0001 Timestamp(1, 8)                         { "username" : "user47921" } -->> { "username" : "user52134" } on : shard0001 Timestamp(1, 9)                         { "username" : "user52134" } -->> { "username" : "user56349" } on : shard0001 Timestamp(1, 10)                         { "username" : "user56349" } -->> { "username" : "user60562" } on : shard0001 Timestamp(1, 11)                         { "username" : "user60562" } -->> { "username" : "user64777" } on : shard0001 Timestamp(1, 12)                         { "username" : "user64777" } -->> { "username" : "user68991" } on : shard0001 Timestamp(1, 13)                         { "username" : "user68991" } -->> { "username" : "user73203" } on : shard0001 Timestamp(1, 14)                         { "username" : "user73203" } -->> { "username" : "user77418" } on : shard0001 Timestamp(1, 15)                         { "username" : "user77418" } -->> { "username" : "user81631" } on : shard0001 Timestamp(1, 16)                         { "username" : "user81631" } -->> { "username" : "user85846" } on : shard0001 Timestamp(1, 17)                         { "username" : "user85846" } -->> { "username" : "user90059" } on : shard0001 Timestamp(1, 18)                         { "username" : "user90059" } -->> { "username" : "user94273" } on : shard0001 Timestamp(1, 19)                         { "username" : "user94273" } -->> { "username" : "user98488" } on : shard0001 Timestamp(1, 20)                         { "username" : "user98488" } -->> { "username" : { "$maxKey" : 1 } } on : shard0001 Timestamp(1, 21)   mongos>