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Jun 11, 2012
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notes about using sharding with "localhost" #43

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13 changes: 13 additions & 0 deletions source/administration/sharding.txt
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Expand Up @@ -183,6 +183,19 @@ scratch, use the following procedure as a starting point:
If you do not specify a shard key, MongoDB will shard the
collection using the ``_id`` field, and this is rarely ideal.

Testing Sharding with "localhost"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Because all components of a sharded cluster must be able to reach one
another over the network, there are special restrictions to be aware of
when configuring sharding on a single machine.

If you use either "localhost" or "127.0.0.1" as the hostname portion of
any host identifier (the ``host`` argument to ``addShard``, or the value
to the ``--configdb`` setting for :program:`mongos`), then you must use
"localhost" or "127.0.0.1" for all such settings. If you do not, you
will receive an error.

Cluster Management
------------------

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