Backup over SFTP

[pagaille (Matthieu Gaillet)]

When configuring the backup task, it connects to the storage through SSH to perform a variety of tasks (controlling rights, sending a specific public key for authentication, …). See the thread :

Nethserver-backup : SFTP connectivity validation fails

Hi there, I tried to connect nethserver-backup to a Hetzner’s robot Storage through SFTP using Cockpit. That failed miserably, with that error message in the system log : exec request failed on channel 0 That cryptic error message lead to that ServerFault page and to the suspicion that there was some kind of validation not supported by Hetzner’s storage system. Digging into cockpit code, I found that line : exec("/usr/libexec/nethserver/api/system-backup/check-sftp {$data['SftpHost']} {…