# service chrony start
# ipa-client-install --domain f21 --force-ntpd
Discovery was successful!
Hostname: vm-039.idm.lab.bos.redhat.com
Realm: F21
DNS Domain: f21
IPA Server: ipa.f21
BaseDN: dc=f21

Continue to configure the system with these values? [no]: y
Synchronizing time with KDC...
Unable to sync time with IPA NTP server, assuming the time is in sync. Please check that 123 UDP port is opened.
User authorized to enroll computers: admin
Password for admin@F21: 
Successfully retrieved CA cert
...

# egrep "(chronyd|ntpd)" /var/log/ipaclient-install.log 
2015-03-25T12:10:20Z DEBUG /usr/sbin/ipa-client-install was invoked with options: {'domain': 'f21', 'force': False, 'krb5_offline_passwords': True, 'configure_firefox': False, 'primary': False, 'conf_sudo': True, 'force_ntpd': True, 'create_sshfp': True, 'conf_sshd': True, 'conf_ntp': True, 'on_master': False, 'no_nisdomain': False, 'nisdomain': None, 'ntp_server': None, 'principal': None, 'keytab': None, 'hostname': None, 'request_cert': False, 'no_ac': False, 'unattended': None, 'location': None, 'sssd': True, 'trust_sshfp': False, 'dns_updates': False, 'realm_name': None, 'conf_ssh': True, 'force_join': False, 'firefox_dir': None, 'ca_cert_file': None, 'server': None, 'prompt_password': False, 'permit': False, 'debug': False, 'preserve_sssd': False, 'mkhomedir': False, 'uninstall': False}
2015-03-25T12:10:21Z DEBUG args='/usr/sbin/ntpd' '-qgc' '/tmp/tmpLYAIXF'
2015-03-25T12:10:21Z DEBUG args='/usr/sbin/ntpd' '-qgc' '/tmp/tmpdvenOx'
chronyd.service                             enabled 
ntpd.service                                disabled
ntpdate.service                             disabled
chronyd.service                             enabled 
ntpd.service                                disabled
ntpdate.service                             disabled
2015-03-25T12:10:35Z DEBUG args='/bin/systemctl' 'is-enabled' 'chronyd.service'
2015-03-25T12:10:35Z DEBUG args='/bin/systemctl' 'is-active' 'chronyd.service'
2015-03-25T12:10:35Z DEBUG args='/bin/systemctl' 'stop' 'chronyd.service'
2015-03-25T12:10:35Z DEBUG args='/bin/systemctl' 'disable' 'chronyd.service'
2015-03-25T12:10:35Z DEBUG stderr=rm '/etc/systemd/system/multi-user.target.wants/chronyd.service'
2015-03-25T12:10:35Z DEBUG args='/bin/systemctl' 'is-enabled' 'ntpd.service'
2015-03-25T12:10:35Z DEBUG Backing up system configuration file '/etc/sysconfig/ntpd'
2015-03-25T12:10:35Z DEBUG args='/sbin/restorecon' '/etc/sysconfig/ntpd'
2015-03-25T12:10:35Z DEBUG args='/bin/systemctl' 'enable' 'ntpd.service'
2015-03-25T12:10:36Z DEBUG stderr=ln -s '/usr/lib/systemd/system/ntpd.service' '/etc/systemd/system/multi-user.target.wants/ntpd.service'
2015-03-25T12:10:36Z DEBUG args='/bin/systemctl' 'restart' 'ntpd.service'
2015-03-25T12:10:36Z DEBUG args='/bin/systemctl' 'is-active' 'ntpd.service'