Enable NTP on the Cluster and on the Browser Host
The clocks of all the nodes in your cluster and the machine that runs the browser through which you access the Ambari Web interface must be able to synchronize with each other.
To install the NTP service and ensure it's ensure it's started on boot, run the following commands on each host:
- RHEL/CentOS/Oracle 6
yum install -y ntp chkconfig ntpd on
- RHEL/CentOS/Oracle 7
yum install -y ntp systemctl enable ntpd
- SLES
zypper install ntp chkconfig ntp on
- Ubuntu
apt-get install ntp update-rc.d ntp defaults
- Debian
apt-get install ntp update-rc.d ntp defaults