[Unit] Description=NTP client/server After=syslog.target ntpdate.service sntp.service Conflicts=ntpd.service [Service] Type=forking EnvironmentFile=-/etc/sysconfig/chronyd ExecStartPre=/usr/libexec/chrony-helper generate-commandkey ExecStart=/usr/sbin/chronyd -u chrony $OPTIONS ExecStartPost=/usr/libexec/chrony-helper add-dhclient-servers [Install] WantedBy=multi-user.target