[ntp:questions] ntpdc is not working in ntp-4.2.8p1

Harlan Stenn stenn at ntp.org
Tue Apr 7 00:46:42 UTC 2015


"Kashif Mumtaz Tahir" writes:
> Hello Folks,
> Currently we have NTP server ntp-4.2.4p8 provided by Redhat RPM on RHEL 6. 
> 
> We want to upgrade it either by RedHat Provided latest RPM package (
> ntp-4.2.6p5 ) or by installing from source compile ( ntp-4.2.8p1 ).

I vote for 4.2.8.

> We tested both upgrade ( on test machine of course) and facing the issue
> that when we do install ntp-4.2.8p1 package from source , ntpdc commands are
> not working. Below is the output
> 
> Code:
> 
> # ntpdc 
> ntpdc> monlist
> localhost: timed out, nothing received
> ***Request timed out
> ntpdc>

ntpdc (mode 7) packets have been disabled by default.  Better to use
ntpq (mode6) requests.

See http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate .

You *can* re-enable mode7 packets.  I recommend against this.  If you
must re-enable mode87 packets, please be *very* careful with your
'restrict' options.

H
--

> But ntpq -pn and ntpdate etc working fine and clients able to sync time with
> this server.
> 
> We are using below guidelines for compiling NTP
>  <http://www.linuxfromscratch.org/blfs/view/svn/basicnet/ntp.html>
> http://www.linuxfromscratch.org/blfs...icnet/ntp.html
> 
> 
> below is the ntp.conf file.
> 
> Code:
> 
> # cat /etc/ntp.conf
> server 213.X.X.X iburst
> server 195.X.X.X iburst
>  
> driftfile /var/lib/ntp/ntp.drift
> logfile /opt/ntp/ntp.log
> restrict default kod nomodify notrap nopeer noquery
> restrict 127.0.0.1
> restrict -6 ::1
>  
> logconfig =syncevents +peerevents +sysevents +allclock
> statistics clockstats cryptostats loopstats peerstats sysstats rawstats
> 
>  
> 
> Any idea why ntpdc is not working ??
> 
>  
> 
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> 


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