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生产环境的集群体系结构¶
在生产环境中,为了保证系统具有较高的可用性,数据必须是冗余的.为了达到这个目的,生产环境中的集群必须有一下的组件:
- Config Servers
在 3.2 版更改: Starting in MongoDB 3.2, config servers for sharded clusters can be deployed as a replica set. The replica set config servers must run the WiredTiger storage engine. MongoDB 3.2 deprecates the use of three mirrored mongod instances for config servers.
A single sharded cluster must have exclusive use of its config servers. If you have multiple sharded clusters, each cluster must have its own replica set config servers.
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