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Adds a shard replica set to a sharded cluster. This method must be run on a
sh.addShard()method has the following parameter:ParameterTypeDescription
The replica set name, hostname, and port of at least one member of the shard's replica set. Any additional replica set member hostnames must be comma separated. For example:
sh.addShard()method has the following prototype form:
addShardcommand and its helper
sh.addShard()method is a helper for the
addShardcommand has additional options which are not available with this helper.
When you add a shard to a sharded cluster, you affect the balance of chunks among the shards of a cluster for all existing sharded collections. The balancer will begin migrating chunks so that the cluster will achieve balance. See Cluster Balancer for more information.
Chunk migrations can have an impact on disk space, as the source shard
automatically archives the migrated documents by default. For details,
You cannot include a hidden member in the seed list provided to
To add a shard, specify the name of the replica set and the hostname of at least one member of the replica set, as a seed. If you specify additional hostnames, all must be members of the same replica set.
The following example adds a replica set named
repl0 and specifies
one member of the replica set: