Adding ssl/tls to existing replica cluster

I’m trying to add tls/ssl certification to my existing mongodb (5.0) 3-node replication cluster and I wanna know whether doing this could do any harm to my data. Do I need to get a backup ? Is there any possibility of data or any configurations in database being damaged ?

This server is in production.

Simply enabling tls has no impact on data.

However routine backup and recovery must be in place for any production database. The alternative is catastrophe when a disaster occurs.

You should already be familiar and confident with the procedure from execution in a lower or test environment.

Following the documented process is quite safe.