October 2017
Intermediate to advanced
226 pages
6h 56m
English
Content preview from MongoDB Administrator's Guide
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Config server
The config server is used to store metadata about the sharded cluster. It contains details about authorizations, as well as admin and config databases. The metadata stored in the config server is read by mongos and shards, making its role extremely important during the operation of the sharded cluster. Thus, it is highly recommended that the config server is setup as a replica set, with appropriate backup and monitoring configured.
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