Backups

[matthieugouel]

Right now there is no data backup of the core services.
We should start simple and have a cronjob zipping the nxthdr directory and put it somewhere else.

Backup destination candidates:

• Scaleway Stardust AMS instance: there is 10Gb of storage, and we can extend this with a block storage volume. However, the latter is quite expensive (2.15€/25Gb)
• A dedicated instance
• Any cloud object storage

First test to do is to check which would be the volume of the backup. Note that it will increase when we will increase active monitoring of the testbed.