[ovirt-users] ovirt hosted engine restore backup fails: remot host identifaction changed

I have a backup file from our ovirt hosted engine. When I try to run "hosted-engine --deploy --restore-from-file=backup.bck" on the same machine with a fresh install of ovirt node 4.3 I get this error after some minutes: [ ERROR ] fatal: [localhost -> ovirt.*mydomain.com*]: FAILED! => {"changed": false, "elapsed": 185, "msg": "timed out waiting for ping module test success: Failed to connect to the host via ssh: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\n@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @\r\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\nIT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!\r\nSomeone could be eavesdropping on you right now (man-in-the-middle attack)!\r\nIt is also possible that a host key has just been changed.\r\nThe fingerprint for the ECDSA key sent by the remote host is\nSHA256:aer7BMZyKHhfzMXX4pzVULHN7OwSSNDrCuOyvdmG8sQ.\r\nPlease contact your system administrator.\r\nAdd correct host key in /dev/null to get rid of this message.\r\nOffending ED25519 key in /var/lib/sss/pubconf/known_hosts:6\r\nPassword authentication is disabled to avoid man-in-the-middle attacks.\r\nKeyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.\r\nPermission denied (publickey,gssapi-keyex,gssapi-with-mic,password)."} I can't find anything in the docs about this problem. I already removed all the entries in /var/lib/sss/pubconf/known_hosts on my ovirt host machine. But that didn't change anything. Is their something wrong with the backup. At the moment I have 2 other hosts running my VM's but no ovirt manager.