How to make a beautiful backup for Linux with Docket Swarm mode?

Question

Backup

We build a cluster on physical servers.

The configuration is quite standard: Linux Ubuntu 20.04 + Docker Swarm Mode

The question arose of backing up the entire system as a whole with a history (daily images, well, or more often ...)

What are the proven free solutions, can you tell me?

The idea is that if the cluster for some reason comes into an inconsistent state, then the admin can quickly deploy the working state from the backup history (for example, the system image for yesterday)

We look to the side [** Veeam Backup & Replication Community Edition **] ( https://www.veeam.com/ru/virtual-machine-backup-so... ) but it’s embarrassing that they focus on virtual servers, although they write that for iron ones, but somehow their support is not confirms...

Answer 1

UrBackup
Kopia
Duplicati
Proxmox backup server (it seems to be possible to use it separately from Proxmox VE)

Answer 2

On physical servers, use Proxmox VE, and already inside build any cluster you like, resorting or not resorting to the help of proxmox. And backups, respectively, Proxmox Backup Server, with incremental backups at least every hour.