sharding - Can I run MongoDB config servers on replica and shard server? -


i need setup 3x3 mongodb 3.2 cluster (3 shards, 6 replicas) , keep number of servers small possible. can run config servers on replica , shard servers (i thought running 9 config server (1 config shard , 8 replica shard))? , idea or there problems when 1 or other server goes down?

so questions mongodb shards , config servers on same server? , should run mongodb config , mongos on same servers? mention running config server on shards not idea still true replicas when using 9 config server?

you can run config server & mongos on same server.i don't think 9 config server required according me 3 config server enough.


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