title: Insert data to Mongob Shard Cluster?
body: <p>At first below is my shard cluster I create by Ops Manager:</p>
  <p><img src="https://i.stack.imgur.com/Ar4M2.png" alt="" /></p>
  <p>I have 2 Mongos and 2 Shard (each shard configure replicates set). I not configure any shard key, I mean not sharded collections esxit in my cluster.</p>
  <p>When I use mongos to insert a database for testing purposes, the database store only one Shard.</p>
  <p>So I want when I insert a database, data can split and store balance on both shards. And I can query from mongos to get accurate data.</p>
  <p>Anyone have the same issue?</p>