Details
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Improvement
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Resolution: Done
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Major - P3
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None
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None
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Sharding
Description
Each shard must be able to talk to all config servers and at-least one member of each shard's replicaSet. If a user has overzealous firewall rules things will break and the only error will be 10276: "DBClientBase::findOne: transport error".
Perhaps we should have a background job try to connect to everyone once a minute and warn if it can't.