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How is a MongoDB cluster different from a single server?
In contrast to a single-server MongoDB database, a MongoDB cluster allows a MongoDB database to either horizontally scale across many servers with sharding, or to replicate data ensuring high availability with MongoDB replica sets, therefore enhancing the overall performance and reliability of the MongoDB cluster. What are clusters in MongoDB?
How to start multiple instances of MongoDB?
You just need to create another folder (ex: mongodb2) dbpath for the second instance, and run it in different port (ex: 27018) Here is how I start 4 mongod’s on the same pc to emulate production environment in development environment. To start mongod you should use separate config for each mongod. Take 4 configs and start mongods using them:
How to add two MongoDB databases in spring?
I don’t know how to add 2 MongoDB databases in the application.properties file in the spring application. spring.data.mongodb.database=DB1 spring.data.mongodb.authentication-database=DB1 spring.data.mongodb.host=dev-ng-mongo1.domain.com spring.data.mongodb.password=9876512 spring.data.mongodb.port=27017 spring.data.mongodb.username=pavan
What kind of service does MongoDB do?
Mongos is a query router; it acts as an intermediary between the client and the server, or the shard that the data resides in. Apart from routing, it can also handle load balancing for all query and write operations to the shards. Finally, a metadata service called config servers (configsvr) is also deployed.
What is the purpose of a sharded MongoDB cluster?
A sharded cluster is also commonly known as horizontal scaling, where data is distributed across many servers. The main purpose of sharded MongoDB is to scale reads and writes along multiple shards. What is MongoDB Atlas Cluster?
How to connect to MongoDB from outside of Kubernetes?
Kubernetes exposes mongod on port 27017 within the Kubernetes container. The NodePort service exposes the mongod via port 30078 . NodePorts range from 30000 to 32767, inclusive. To connect to your deployment from outside of the Kubernetes cluster, run the mongod command with the external FQDN of a node as the –host flag.