root@dc2:/home/eida# rm /etc/ssh/host_key_rsa_key*
root@dc2:/home/eida# rm /etc/ssh/host_key_ecdsa_key*

root@dc2:/home/eida# cat /etc/ssh/sshd_config | grep -v ^# | grep -v ^$
Include /etc/ssh/sshd_config.d/*.conf
HostKey /etc/ssh/ssh_host_ed25519_key
PermitRootLogin no
PubkeyAuthentication yes
PasswordAuthentication no
PermitEmptyPasswords no
ChallengeResponseAuthentication no
UsePAM yes
AllowTcpForwarding no
X11Forwarding no
PrintMotd no
AcceptEnv LANG LC_*
Subsystem	sftp	/usr/lib/openssh/sftp-server

root@dc2:/home/eida# /etc/init.d/ssh restart