I am currently working with OpenShift 4.x and I need to perform a backup and restore of etcd. I have come across various documentation, but I am looking for real-world examples or detailed steps from someone who has successfully performed this operation in an OpenShift 4.x environment.

Here’s what I am looking for

Backup Procedure:

What are the recommended steps for taking an etcd backup in OpenShift 4.x?
Are there any specific commands or tools that should be used?
How do I ensure that the backup is consistent and complete?
Restore Procedure:

What are the detailed steps to restore etcd from a backup in OpenShift 4.x?
Are there any specific considerations or prerequisites before performing the restore?
How do I verify that the restore operation has been successful?
Common Issues and Troubleshooting:

What common issues might arise during the backup and restore process?
Are there any best practices or common pitfalls to avoid?

I have already reviewed the OpenShift documentation on backup and restore, but I would like to see practical examples or case studies from others who have done this.

My cluster setup includes multiple nodes and is running in a production environment, so maintaining data integrity and minimizing downtime are crucial.

Any detailed guidance or references to relevant experiences would be greatly appreciated. Thank you!