Cheatsheet of MongoDB replica set admin. MongoDB admin uses this frequently for managing MongoDB replica set. In replica set, there are various types of commands which you have to run for a maintenance and operation point of view.
The list of activities for MongoDB replica set config for MongoDB DBA. config MongoDB replica set task in this article.
How to add member in replica set in MongoDB using rs.add() in running mongoDB replica set. How to add secondary member in running replica set in MongoDB.