SSH parameters for a given replication task

[mpfusion]

I have two systems, one running TrueNAS-12.0-U8 and one recently upgraded to TrueNAS-13.0-U2. This upgrade broke the PULL replication from the 12.0-U8 system (and maybe more, I don't know yet). It shows “Authentication failed.” in the GUI. SSH on the console works but the GUI seems to use different keys (TrueNAS has auto-generated dozens of connections in System/SSH Connection, so maybe there's a mixup somewhere. Strange since it has worked for years.

How I obtain the exact SSH command line the GUI uses for a given SSH replication task? This would enable me to debug this on the console.

 

[Alecmascot]

The fix is in the release notes for U2

 

[mpfusion]

Ok that's why, I overlooked that. I now added

Code:

PubkeyAcceptedAlgorithms +ssh-rsa

Am I supposed to remove that line once all servers are updated to 13.0-U2? Do I need to regenerate any keys?

I'm still getting “Authentication failed”. Even after restarting the SSH server (not sure if that was necessary). So the initial question still stands.

 

[Samuel Tai]

This is clearly stated in the documentation. For replication, you set up:

1. SSH Keypairs, which are the private/public keys of the server originating the replication connection. You would then need to manually add the public key to the SSH Public Key field of the destination server's root account.
2. SSH Connections, which bind an SSH Keypair to a specific destination server.
3. Replication Task, which then references the SSH Connection.

 

[Samuel Tai]

You may want to clean up all the auto-generated SSH Connections for your own sanity. Likewise any auto-generated SSH Keypairs.

 

[mpfusion]

You may want to clean up all the auto-generated SSH Connections for your own sanity. Likewise any auto-generated SSH Keypairs.

Ok, I'll do that. It seems the system went haywire generating all those entries. I'll purge the list then.

 

[mpfusion]

This is clearly stated in the documentation.

Is it? My questions were:

- How I obtain the exact SSH command line the GUI uses for a given SSH replication task?
- Am I supposed to remove that line (… +ssh-rsa) once all servers are updated to 13.0-U2?
- Do I need to regenerate any keys?

I don't see any of that explained in the documentation. A pointer to the doc where those questions are answered would be much appreciated.