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Operating Systems Solaris "synchronisation lost" errors for Solaris NTP server Post 303042038 by Neo on Thursday 12th of December 2019 12:48:35 AM
Old 12-12-2019
You should consider installing chrony and doing a comparative test.

See this thread:

NTP synchronised problem in our Centos 7.6 node

The person having issue (above) with ntpd decided to move to chrony due to security considerations (the right decision in my view).

In all my servers, I have disabled ntpd for the same reason (security) and I only run chrony on all servers these days.

ntpd has a very bad and buggy track record (see discussion referenced above).

PS: What version of ntpd are you currently running? I went back and reread all the posts in this thread and did not see the version mentioned.

Code:
ntpq --version

Seems to me the first question to answer is the version of ntp you are running. Lots of people (I have seen over the years) are running obsolete versions, buggy versions, flawed versions, or all of the above.
 

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chrony.conf(5)							Configuration Files						    chrony.conf(5)

NAME
chrony.conf - chronyd configuration file SYNOPSIS
/etc/chrony.conf DESCRIPTION
chrony is a pair of programs for maintaining the accuracy of computer clocks. chronyd is a background daemon program that can be started at boot time. Assuming that you have found some servers, you need to set up a configuration file to run chrony. The (compiled-in) default location for this file is /etc/chrony.conf. Assuming that your ntp servers are called `a.b.c' and `d.e.f', your chrony.conf file could contain as a minimum server a.b.c server d.e.f server g.h.i However, you will probably want to include some of the other directives described in detail in the documentation supplied with the distri- bution (chrony.txt and chrony.texi). The following directives will be particularly useful : `driftfile', `commandkey', `keyfile'. The smallest useful configuration file would look something like server a.b.c server d.e.f server g.h.i keyfile /etc/chrony.keys commandkey 1 driftfile /var/lib/chrony/drift SEE ALSO
chrony(1), chronyc(1), chronyd(8) http://chrony.tuxfamily.org/ AUTHOR
Richard Curnow <rc@rc0.org.uk> This man-page was written by Jan Schaumann <jschauma@netmeister.org> as part of "The Missing Man Pages Project". Please see http://www.netmeister.org/misc/m2p2/index.html for details. The complete chrony documentation is supplied in texinfo format. chrony 1.29.1 January 2014 chrony.conf(5)
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