Backup Galera Database

I’m new to Rancher and am currently running 1.6.10. I created a Galera stack that will eventually be used to back my website and Rancher itself. I am currently running a separate Galera cluster outside of Rancher that uses local storage on each host for persistence. I have a couple of questions:

What is the best way to regularly backup a Galera cluster running on Rancher?
Are there any existing scripts/programs for backups and/or restores?