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