I installed cockpit 0.67-2.fc22 on an ipa server and added several servers from the dahsboard as you can see here: http://i.imgur.com/vca19wS.png

But there is one server that keeps annoying me (as you can see here: http://i.imgur.com/3J7AHQY.png).

It says "Cannot forward login credentials".

I checked in /var/log/messages and found this:

Oct 22 10:10:02 zaira2 cockpit-ws: adina.xxx: ssh-ed25519 host key for server is not known: 8f:55:e3:ee:90:f3:30:11:43:3b:99:97:c5:9c:8a:0f

but then I found the same message for all the other servers I succeeded to add to the dashboard:

Oct 22 09:47:51 zaira2 cockpit-ws: zaira.xxx: ssh-ed25519 host key for server is not known: f5:d7:67:d1:7b:db:d3:b0:54:4d:b7:0e:b9:38:da:a7
Oct 22 09:48:54 zaira2 cockpit-ws: arabella.xxx: ssh-ed25519 host key for server is not known: 23:09:0b:c3:b1:1c:c4:2d:fc:37:fc:45:f3:27:91:53
Oct 22 09:56:04 zaira2 cockpit-ws: salome.xxx: ssh-ed25519 host key for server is not known: 61:70:b2:cf:7d:a5:b9:27:40:68:3b:57:4f:ab:40:48
Oct 22 09:58:28 zaira2 cockpit-ws: nabucco.xxx: ssh-ed25519 host key for server is not known: 57:b0:f0:6c:f3:4d:f9:b3:55:81:08:60:e5:81:a0:23
Oct 22 10:07:11 zaira2 cockpit-ws: rigoletto.xxx: ssh-ed25519 host key for server is not known: 36:0e:80:79:fd:ec:e5:47:c3:e4:d1:de:86:27:9b:b1
...

What can be wrong with server adina?

Fuji