[Unit]
Description=OpenSSH %i Server Key Generation
ConditionFileNotEmpty=|!/etc/ssh/ssh_host_%i_key

[Service]
Type=oneshot
# Set option as empty variable to suppress warnings upon expanding the command line
# when the config file under /etc does not exist or is empty.
Environment=OPTIONS=
EnvironmentFile=-/etc/sysconfig/sshd
ExecStart=/usr/libexec/openssh/sshd-keygen %i

[Install]
WantedBy=sshd-keygen.target