This might be a dummy question, but I cannot find any clue in all online doc.
For a already-built-up mongodb cluster, How can I find which sharding key(s) is used for given collecton?
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This might be a dummy question, but I cannot find any clue in all online doc.
For a already-built-up mongodb cluster, How can I find which sharding key(s) is used for given collecton?
As outlined in the Sharding Administration Docs, you can use
db.printShardingStatus()to see this information.For sharded collections it will print the key pattern.