InstantSSH and SFTP

Hello,

I was testing the InstantSSH plugin on one of our servers and I notice that SSH was working perfectly but SFTP does not.
Software info: Ubuntu 14.04 LTS, I-mscp 1.1.18, InstantSSH 3.0.0

On /var/log/auth.log I see,

Quote

Dec 1 22:03:30 csrv3 sshd[1233]: error: Could not load host key: /etc/ssh/ssh_host_ed25519_key
Dec 1 22:03:42 csrv3 sshd[1233]: Accepted publickey for imscp_bogdan from 89.47.55.50 port 53600 ssh2: RSA 59:d8:df:77:80:41:28:2f:b4:82:6b:4d:67:e0:0a:7b
Dec 1 22:03:42 csrv3 sshd[1233]: pam_unix(sshd:session): session opened for user imscp_bogdan by (uid=0)
Dec 1 22:03:42 csrv3 systemd-logind[27581]: New session 37 of user vu2004.
Dec 1 22:03:42 csrv3 pam_chroot[1233]: session: reading config file (/etc/security/chroot.conf)
Dec 1 22:03:42 csrv3 pam_chroot[1233]: session: expanded path "/var/chroot/InstantSSH/shared_jail" -> "/var/chroot/InstantSSH/shared_jail"
Dec 1 22:03:42 csrv3 pam_chroot[1233]: session: found chroot_dir "/var/chroot/InstantSSH/shared_jail" for user "imscp_bogdan"
Dec 1 22:03:42 csrv3 pam_chroot[1233]: session: preparing to chroot()
Dec 1 22:03:42 csrv3 systemd-logind[27581]: Removed session 37.

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Indeed, there is no /etc/ssh/ssh_host_ed25519_key file.
Later edit: I have fixed this by running manually "ssh-keygen -A" to regenerate the missing files.

WinSCP is saying,

"Cannot initialize SFTP protocol. Is the host running a SFTP server?, Server sent command exit status 127."

Could it be a bug or something like that? Any suggestions.

With the help of Nuxwin I manage to solve the problem. First of all, InstantSSH is by default sftp ready, not sftp enabled so, out of the box it will not work. To enable sftp you will have to edit /var/www/imscp/gui/plugins/InstantSSH/config.php from,

to,

After that push "Update Plugins" button in i-mscp web interface, in the Administrator Account, Settings (upper corner, right), Plugin Management (lower corner, left).

And don't forget to use the latest version of i-mscp and plugin.

I'll test the plugin today, on onother server and come back with more details and information if necessary.

I have finished the tests and it is working perfectly!