MongoDB replication for fault tolerance

Question

linux

Hello!
I need to replicate Mongo databases for fault tolerance.
With MySQL I made master-master. And what about mongo? I read a lot of articles on the Internet, but did not understand how to solve my problem.
It is necessary that the data in the database be synchronized, and in the event of a failure of one server, it is necessary to write to the mongo database and read data from it.

Answer 1

welinux.ru/post/6607/

Answer 2

ReplicaSet is well documented , easy and fast to do. When the master fails, one of the slaves is automatically assigned to it. There are many drivers with automatic support for ReplicaSet, for example, in the php driver, you just need to specify a list of database hosts.

Answer 3

It is well described here
Just using the Replica Set