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It is recommended to detach the volume from the server before backing it up, to avoid potential crashes. This can be done as explained above. One can force the backup of attached volumes with the --force option. The snapshot or backup of an attached volume is crash consistent.
Common use cases
These is a list of common configurations of VMs and volumes in the cloud and the recommened procedure to backing them up
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An alternative to repeating all the steps here multiple times is to use the automation script below, where one can set up a configuration file detailing all the instances, volumes, etc, to be backed up, and run the script a single time.
Scheduling backups
It is often quite useful to schedule a backup for a specific time in the future, as well as to repeat that scheduled backup regularly, to ensure the preservation of any changes. In order to prepare a scheduled backup, with or without repetition, one can set up a cron job that will run in the background and perform the necessary operations. A full tutorial on how to use cron is beyond the scope of this page, more details can be found elsewhere, e.g. https://crontab.guru/. Here only a few examples will be shown.
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Note: some of the syntax above is specific to bash . Add SHELL=/usr/bin/env bash to your crontab to ensure cron runs using bash , or change the above script for its equivalent in sh .
Backup automation
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