network time protocol

CentOS / Redhat Linux: Install OpenNTPD To Synchronize The Local Clock

June 24, 2010November 22, 2016in CentOS, Fedora Linux, Linux, Package Management, RedHat and Friends last updated November 22, 2016

OpenNTPD is a Unix system daemon implementing the Network Time Protocol to synchronize the local clock of a computer system with remote NTP servers. How do I install OpenNTPD under CentOS / RHEL / Fedora Linux instead of default NTPD client / server?

HowTo: Verify My NTP Working Or Not

March 25, 2010November 29, 2015in Linux, Networking, UNIX last updated November 29, 2015

I‘ve setup an NTP (Network Time Protocol) client and/or server to manage the system clock over a network. But, how do I verify that it is working correctly?

FreeBSD Install OpenNTPD NTP Server / Client To Synchronize The Local Clock

June 4, 2009November 23, 2016in FreeBSD, Hardware, IPv6, Networking, Openbsd, Package Management, PF Firewall, Security, UNIX last updated November 23, 2016

How do I install OpenNTPD ( a Unix system daemon implementing the Network Time Protocol) to synchronize the local clock of a FreeBSD computer system with remote NTP servers called ntp.myisp.com?

CentOS / Red Hat Configure an NTP Client And Server

March 16, 2009June 24, 2010in CentOS, Fedora Linux, Hardware, Iptables, Linux, Networking, Package Management, RedHat and Friends last updated June 24, 2010

How do I configure an NTP (Network Time Protocol) client or server under CentOS / RHEL / Fedora Linux to manage the system clock over a network?

BIND: Clocks are Unsynchronized Error and Solution

February 1, 2009in Bind dns, CentOS, Debian / Ubuntu, FreeBSD, HP-UX Unix, Linux, Networking, Openbsd, Package Management, RedHat and Friends, Solaris-Unix, Suse, Troubleshooting, Ubuntu Linux, UNIX last updated February 1, 2009

Q. I’ve configured BIND named TSIG as documented here. It worked for some time, but my /var/log/messages got the errors as follows:

zone example.org/IN: refresh: failure trying master 71.22.11.22#53 (source 0.0.0.0#0): clocks are unsynchronized: 9 Time(s)
zone example.org/IN: refresh: failure trying master 71.22.11.22#53 (source 71.22.11.22#0): clocks are unsynchronized: 9 Time(s)

How do I fix these errors under Debian Linux 64 bit etch server?

Debian / Ubuntu Linux Install NTPD To Synchronism Clock With Internet Standard Time Servers

August 30, 2008August 30, 2008in Debian / Ubuntu, Linux, Networking, Package Management last updated August 30, 2008

Q. How do I install and configure NTP ( Network Time Protocol ) daemon to keep my dedicated servers clock in sync?

HP-UX UNIX Configure an NTP Server

January 15, 2008January 15, 2008in HP-UX Unix, Networking, UNIX last updated January 15, 2008

Q. How do I configure an NTP (network time protocol) Server under HP-UX UNIX server as my applications rely on the system clock accuracy to get current time / run reports?
Continue reading “HP-UX UNIX Configure an NTP Server”

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