Hallo Bernd,
danke mit dem Tipp (-vvv). Allerdings verwirrt mich das Ergebnis noch mehr 
Hier die Infos aus dem Logfile, die ich nicht verstehe bzw. wie ich sie interpretiere:
debug3: expanded UserKnownHostsFile ‘\~/.ssh/known_hosts’ → ‘/root/.ssh/known_hosts’debug3: expanded UserKnownHostsFile ‘\~/.ssh/known_hosts2’ → ‘/root/.ssh/known_hosts2’
Dies bedeutet für mich, dass die Comman-line mit dem User “root” ausgeführt wird. Ich bin in HA mit “jh” angemeldet
debug1: load_hostkeys: fopen /root/.ssh/known_hosts: No such file or directory
Dies kann ich nicht nachvollziehen.
> ➜ \~ cd /root/.ssh/
> ➜ .ssh ls -l
> total 16
> -rw-r–r-- 1 root root 130 Sep 26 21:00 environment
> -rw------- 1 root root 660 Sep 26 21:18 known_hosts
> -rw------- 1 root root 755 Sep 26 17:45 known_hosts.alt
> -rw-r–r-- 1 root root 94 Sep 26 21:13 known_hosts.old
> ➜ .ssh
> debug1: SSH2_MSG_KEX_ECDH_REPLY received
> debug1: Server host key: ssh-ed25519 SHA256:xzHnMN7GjVEUQEGaiiIP5/qjIyt07w/Hpxjnyj8X3hA
> debug1: load_hostkeys: fopen /root/.ssh/known_hosts: No such file or directory
> debug1: load_hostkeys: fopen /root/.ssh/known_hosts2: No such file or directory
> debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
> debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
> debug3: hostkeys_find_by_key_hostfile: trying user hostfile “/root/.ssh/known_hosts”
> debug1: hostkeys_find_by_key_hostfile: hostkeys file /root/.ssh/known_hosts does not exist
> debug3: hostkeys_find_by_key_hostfile: trying user hostfile “/root/.ssh/known_hosts2”
> debug1: hostkeys_find_by_key_hostfile: hostkeys file /root/.ssh/known_hosts2 does not exist
> debug3: hostkeys_find_by_key_hostfile: trying system hostfile “/etc/ssh/ssh_known_hosts”
> debug1: hostkeys_find_by_key_hostfile: hostkeys file /etc/ssh/ssh_known_hosts does not exist
> debug3: hostkeys_find_by_key_hostfile: trying system hostfile “/etc/ssh/ssh_known_hosts2”
> debug1: hostkeys_find_by_key_hostfile: hostkeys file /etc/ssh/ssh_known_hosts2 does not exist
> debug1: read_passphrase: can’t open /dev/tty: No such device or address
> Host key verification failed.
Das System scheint also die Datei “known_hosts” nicht zu finden.
Sie ist aber definitiv vorhanden. Was nun?
Viele Grüße
Jürgen
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