In this blog post, we will learn what MongoDB chained replication is, why you might choose to disable it, and the steps you need to take to do so. What is chain replication? Chain Replication in MongoDB, as the name suggests, means that a secondary member is able to replicate from another secondary member instead [&]

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https://www.percona.com/blog/2018/10/05/mongodb-disable-chained-replication/