See also Command reference.
There are many variations of this command. Regardless of which variation of the command is used, UBOS generally performs the following actions:
It suspends the Site(s) affected by the backup, and temporarily replaces them with a placeholder page.
"retentionpolicy" : "keep", "retentionbucket" : "name"
The actual backup performed depends on the type of AppConfigItem. For example, a MySQL database will be dumped, and the resulting dump will be backed up.
The individually exported items, and certain meta-data are assembled in a Backup format file.
UBOS resumes the Site(s) and removes the placeholder page.
This command must be run as root (sudo ubos-admin backup).