On Fri, Oct 9, 2020 at 7:12 PM Martin Perina <mper...@redhat.com> wrote:
> > > Could you please share with us all logs from engine gathered by > logcollector? We will try to find out any clue what's wrong in your env ... > > Thanks, > Martin > > I will try to collect. In the mean time I've found that SSH could be in some way involved When I add the host and get the immediate failure and apparently nothing happens at all, I see these two lines in /var/log/ovirt-engine/server.log 2020-10-09 18:15:09,369+02 WARN [org.apache.sshd.client.session.ClientConnectionService] (sshd-SshClient[7cb54873]-nio2-thread-1) globalRequest(ClientConnectionService[ClientSessionImpl[root@ov200 /10.4.192.32:22]])[hostkeys...@openssh.com, want-reply=false] failed (SshException) to process: EdDSA provider not supported 2020-10-09 18:15:09,699+02 WARN [org.apache.sshd.client.session.ClientConnectionService] (sshd-SshClient[2cbceeab]-nio2-thread-1) globalRequest(ClientConnectionService[ClientSessionImpl[root@ov200 /10.4.192.32:22]])[hostkeys...@openssh.com, want-reply=false] failed (SshException) to process: EdDSA provider not supported could it be that the ssh client embedded is not able to connect to the CentOS 8.2 for some reason? On host at the moment when I try to add it I see again two sessions opened and immediately closed (tried several times), eg in the timeframe above I have: Oct 9 18:15:09 ov200 systemd-logind[1237]: New session 41 of user root. Oct 9 18:15:09 ov200 systemd[1]: Started Session 41 of user root. Oct 9 18:15:09 ov200 systemd-logind[1237]: Session 41 logged out. Waiting for processes to exit. Oct 9 18:15:09 ov200 systemd-logind[1237]: Removed session 41. Oct 9 18:15:09 ov200 systemd-logind[1237]: New session 42 of user root. Oct 9 18:15:09 ov200 systemd[1]: Started Session 42 of user root. Oct 9 18:15:09 ov200 systemd-logind[1237]: Session 42 logged out. Waiting for processes to exit. Oct 9 18:15:09 ov200 systemd-logind[1237]: Removed session 42. anyway at sshd service level it seems it is ok om the host: journalctl -u sshd.service has Oct 09 18:15:09 ov200 sshd[13379]: Accepted password for root from 10.4.192.43 port 46008 ssh2 Oct 09 18:15:09 ov200 sshd[13379]: pam_unix(sshd:session): session opened for user root by (uid=0) Oct 09 18:15:09 ov200 sshd[13379]: pam_unix(sshd:session): session closed for user root Oct 09 18:15:09 ov200 sshd[13398]: Accepted password for root from 10.4.192.43 port 46014 ssh2 Oct 09 18:15:09 ov200 sshd[13398]: pam_unix(sshd:session): session opened for user root by (uid=0) Oct 09 18:15:09 ov200 sshd[13398]: pam_unix(sshd:session): session closed for user root On the host I have not customized anything ssh related: [root@ov200 ssh]# ps -ef|grep sshd root 1274 1 0 Oct08 ? 00:00:00 /usr/sbin/sshd -D -oCiphers=aes256-...@openssh.com,chacha20-poly1...@openssh.com ,aes256-ctr,aes256-cbc,aes128-...@openssh.com,aes128-ctr,aes128-cbc -oMACs= hmac-sha2-256-...@openssh.com,hmac-sha1-...@openssh.com, umac-128-...@openssh.com,hmac-sha2-512-...@openssh.com ,hmac-sha2-256,hmac-sha1,umac-...@openssh.com,hmac-sha2-512 -oGSSAPIKexAlgorithms=gss-gex-sha1-,gss-group14-sha1- -oKexAlgorithms=curve25519-sha256,curve25519-sha...@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1 -oHostKeyAlgorithms=rsa-sha2-256,rsa-sha2-256-cert-...@openssh.com ,ecdsa-sha2-nistp256,ecdsa-sha2-nistp256-cert-...@openssh.com ,ecdsa-sha2-nistp384,ecdsa-sha2-nistp384-cert-...@openssh.com,rsa-sha2-512, rsa-sha2-512-cert-...@openssh.com,ecdsa-sha2-nistp521, ecdsa-sha2-nistp521-cert-...@openssh.com,ssh-ed25519, ssh-ed25519-cert-...@openssh.com,ssh-rsa,ssh-rsa-cert-...@openssh.com -oPubkeyAcceptedKeyTypes=rsa-sha2-256,rsa-sha2-256-cert-...@openssh.com ,ecdsa-sha2-nistp256,ecdsa-sha2-nistp256-cert-...@openssh.com ,ecdsa-sha2-nistp384,ecdsa-sha2-nistp384-cert-...@openssh.com,rsa-sha2-512, rsa-sha2-512-cert-...@openssh.com,ecdsa-sha2-nistp521, ecdsa-sha2-nistp521-cert-...@openssh.com,ssh-ed25519, ssh-ed25519-cert-...@openssh.com,ssh-rsa,ssh-rsa-cert-...@openssh.com -oCASignatureAlgorithms=rsa-sha2-256,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,rsa-sha2-512,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa and in sshd_config HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_ecdsa_key HostKey /etc/ssh/ssh_host_ed25519_key Can I replicate the command that the engine would run on host through ssh? Gianluca
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