It’s really strange and even when enabling the --log-level=profiling Duplicati does not show any hint of what is happening behind the scenes. There is no firewall/port issue and I verified the config file of Duplicati (via the “export configuration” option) contains the SSH port number. I see two possible reasons for this issue:
- The version combination of Duplicati and Mono does not work well and therefore the connection is not working properly.
- Mono itself is somehow malconfigured (e.g. no permissions?) and cannot connect to the remote SSH server.
Using default Debian packages, the versions are as follows:
root@dat:~# apt policy mono-runtime
mono-runtime:
Installed: 4.6.2.7+dfsg-1
Candidate: 4.6.2.7+dfsg-1
Version table:
*** 4.6.2.7+dfsg-1 500
500 http://ftp.de.debian.org/debian stretch/main amd64 Packages
100 /var/lib/dpkg/status
root@dat:~# apt policy duplicati
duplicati:
Installed: 2.0.4.5-1
Candidate: 2.0.4.5-1
Version table:
*** 2.0.4.5-1 100
100 /var/lib/dpkg/status
Firewall and port issues are out of the question as there is no magic going on when simply running the ssh command from command line works as expected.