There is no ntpupdate command. You can update ntp by typing # ntpdate -u {Main node sync'ed to NTP server IP address or Domain name here} Example # ntpdate -u domains.ntp.com OR # ntpdate -u 192.168.0.2 You should only have 1 node announcing NTP and other nodes getting time from main node. ... View more

I use puppet and foreman to configure each system the same for all ntp clients to a central ntp server. Great information here http://www.linuxsecrets.com/blog/4tutorial-and-install-howto/2014/06/26/906-how-to-install-and-configure-linux-ntp-server-and-client ... View more

Hi anton_85   Try this article, it explains time zones and settings which is very well explained.   http://www.linuxsecrets.com/easyblog/2015/01/30/1374-fixing-date-and-setting-time-and-zone-on-rhel-6-from-command-line     ... View more

I found this article which was super helpful.   http://www.linuxsecrets.com/categories/linux-performance/performance-tips/redhat-prerequisites-benchmarking-and-stress-testing-on-hadoop-cluster ... View more