#!/bin/bash
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Copyright Clairvoyant 2015

yum -y -e1 -d1 install ntp
service ntpd start
chkconfig ntpd on


#!/bin/bash
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Copyright Clairvoyant 2015

if rpm -q redhat-lsb-core; then
  OSREL=`lsb_release -rs | awk -F. '{print $1}'`
else
  OSREL=`rpm -qf /etc/redhat-release --qf="%{VERSION}\n"`
fi
if [ $OSREL == 7 ]; then
  # https://www.centos.org/forums/viewtopic.php?f=47&t=47626
  systemctl disable chronyd.service
fi
yum -y -e1 -d1 install ntp
service ntpd start
chkconfig ntpd on



Disable chronyd on EL7 before starting ntpd.
Disable chronyd on EL7 before starting ntpd.
