How to set authorization for mongo-query-router (mongos)?

Ops and Admin Sharding
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Can you show rs.status() output
Can you connect to each node of shard3 replicaset and replicaset as a whole using --host replicaset/n1,n2,n3
Is keyfile present in all the config files or not?
Also check this link

Could not find host matching read preference { mode: “primary” } for set