No matter what you do, there will be times when something goes wrong with your OpenShift cluster, and some (or all) data is lost. That's why you need to know when and how to make OpenShift backups and how to bring OpenShift back to an operational state. The OpenShift installation procedure includes the following components that you will need to back up:
- Etcd key-value store data
- Master configuration data
- Ansible host installation playbooks
- Pod data
- Registry data
- Project configuration data
- Additionally installed software
Depending on the failure situation, you may need to either reinstall the whole OpenShift cluster or reinstall some components separately. In most cases, you will be required to completely reinstall the OpenShift cluster.
