Resolved Backup fails to be stored when "Use FTPS" is checked

[Kimon Nouskalis]

My server's backup fails to be stored in my remote FTP storage when the "Use FTPS" is checked.

All ftp connections going fine between plesk and remote ftp server.
While the backup is started always sends the first 16KB (a 16KB file named backup_YYMMDDHHMM.tar is created in remote FTP storage) and stops with the message:

[2017-03-23 15:48:53.623|24508] INFO: * Uploaded unaligned file size (16384 out of 0 bytes)
[2017-03-23 15:48:53.623|24508] INFO: * Connection #1 to host {my_ftp_server} left intact
[2017-03-23 15:48:53.623|24508] INFO:
[2017-03-23 15:48:53.623|24508] INFO: Data sending interrupted, because of lost connection to FTP
[2017-03-23 15:48:53.648|24508] INFO: Unable to save data to an archive[76931fac-9dab-42b3-86c2-48b87d6ae33f]: Unable to save data to an archive. Check whether the target directory is accessible for writing. For more information, see the log file (/opt/psa/PMM/sessions/2017-03-23-154843.414/migration.log) [:0]

[2017-03-23 15:48:53.648|24508] INFO: pmm-ras finished. Exit code: 1

In case of unchecking the "Use FTPS" option, the backup is stored correctly in remote FTP storage with the rest settings untouched.

My plesk/onyx server default certificate is a wildcard certificate (*.mydomain.com), also the ftp storage (on another server) has the same certificate as it is ftp.mydomain.com.

Do you believe that the same wildcard certificates situation, might be the cause of the ftps problem?

Any other clue/hint ?

 

[IgorG]

Any other clue/hint ?

https://support.plesk.com/hc/en-us/articles/115001900329

 

[Kimon Nouskalis]

https://support.plesk.com/hc/en-us/articles/115001900329

Thank you Igor

 

[G J Piper]

I'm having this with Onyx 17.0.17 and CentOS 6.8 as well.
Turning off "Use FTPS" works around it, but..."