This tool was built to automate the steps to create an Openshift 4 backup described on https://docs.openshift.com/container-platform/4.10/backup_and_restore/control_plane_backup_and_restore/backing-up-etcd.html
Cronjob openshift-backup resource will be created and scheduled to run at 11:56 PM (GMT) and keep last 3 days on backup's directory. All files with more than 3 days will be removed from the backups directory.
oc apply -f openshift4-backup.yaml