How to check whether the collection is sharded or not in Mongodb

Question

I Wrote

db.runCommand({enablesharding : "database"})

db.runCommand({shardcollection : "database.coll_1",key : {_id :"hashed"}})

And how to check is collection sahrded or not? Maybe exist some function that I do not know. Plese help me!

Answer 1

connect to mongos and run the following:

use config;
db.collections.find( {_id: "db.colname" , dropped : false } )

if collection is shared it'll appear there along with it sharding key