MongoDB-Sharding

rs0:PRIMARY> sh.help()
        sh.addShard( host )                       server:port OR setname/server:port
        sh.enableSharding(dbname)                 enables sharding on the database dbname
        sh.shardCollection(fullName,key,unique)   shards the collection
        sh.splitFind(fullName,find)               splits the chunk that find is in at the median
        sh.splitAt(fullName,middle)               splits the chunk that middle is in at middle
        sh.moveChunk(fullName,find,to)            move the chunk where 'find' is to 'to' (name of shard)
        sh.setBalancerState( <bool on or not> )   turns the balancer on or off true=on, false=off
        sh.getBalancerState()                     return true if enabled
        sh.isBalancerRunning()                    return true if the balancer has work in progress on any mongos
        sh.addShardTag(shard,tag)                 adds the tag to the shard
        sh.removeShardTag(shard,tag)              removes the tag from the shard
        sh.addTagRange(fullName,min,max,tag)      tags the specified range of the given collection
        sh.status()                               prints a general overview of the cluster