10.5. Backing Up Node Host Files

Backing up certain node host files can help prevent data loss. You can use standard Red Hat Enterprise Linux software, such as tar or cpio, to perform this backup. Red Hat recommends backing up the following node host files and directories:

If the data from these files is lost, see OpenShift Enterprise Administration Guide for instructions on how to recover a failed node host.

Stateless applications are more easily recovered; if an application is treated as stateless, then node hosts can easily be added to and destroyed in your deployment and you can create cron scripts to clean up these hosts. For stateful applications, Red Hat recommends keeping the state on a separate shared storage volume. This ensures the quick recovery of a node host in the event of a failure.