Implementing Replica Sets

This lesson will teach you how to implement replica sets in MongoDB and the various commands used in the process.

As in the previous chapter, the MongoDB shell client is used for demonstrative purposes.

Note: Try running all of the commands mentioned below, one-by-one, in the terminal at the end of the lesson.

The three commands mentioned below, for running the mongod instances, have already been run for you in the terminal below.

Starting mongod Instances

Here, we started one instance of mongod with some extra parameters:

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