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Linuxhelp _ Technical Support _ Ntp Setup

Posted by: ctrunk514 Mar 17 2005, 09:48 AM


I am trying to get NTPd working on my RedHat 9.0 system. I system is having problems keeping the correct time. I edited my ntp.conf file and started ntpd. But everytime I run ntpq - p all my values come back as 0 (jitters of 4000 as well) from what I have read, this means that NTP is not working.

my ntp.conf file is as follows:

# Prohibit general access to this service.
restrict default ignore

# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.

# -- CLIENT NETWORK -------
# Permit systems on this network to synchronize with this
# time service. Do not permit those systems to modify the
# configuration of this service. Also, do not use those
# systems as peers for synchronization.
# restrict mask notrust nomodify notrap

# or remove the default restrict line
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.

restrict mask nomodify notrap noquery
restrict mask nomodify notrap noquery

#multicastclient # listen on default
# restrict mask notrust nomodify notrap
# restrict mask notrust nomodify notrap

# Undisciplined Local Clock. This is a fake driver intended for backup
# and when no outside source of synchronized time is available. The
# default stratum is usually 3, but in this case we elect to use stratum
# 0. Since the server line does not have the prefer keyword, this driver
# is never used for synchronization, unless no other other
# synchronization source is available. In case the local host is
# controlled by some external source, such as an external oscillator or
# another protocol, the prefer keyword would cause the local host to
# disregard all other synchronization sources, unless the kernel
# modifications are in use and declare an unsynchronized condition.
fudge stratum 10

# Drift file. Put this in a directory which the daemon can write to.
# No symbolic links allowed, either, since the daemon updates the file
# by creating a temporary in the same directory and then rename()'ing
# it to the file.
driftfile /etc/ntp/drift
broadcastdelay 0.008

# Authentication delay. If you use, or plan to use someday, the
# authentication facility you should make the programs in the auth_stuff
# directory and figure out what this number should be on your machine.
authenticate yes

# Keys file. If you want to diddle your server at run time, make a
# keys file (mode 600 for sure) and define the key number to be
# used for making requests.
# systems might be able to reset your clock at will. Note also that
# ntpd is started with a -A flag, disabling authentication, that
# will have to be removed as well.
keys /etc/ntp/keys


What am I doing wrong? is there anyone out there that has ntp working on redhat that could post there ntp.conf file?

Thanks for the help


also, running ntpdate works fine, but i dont want to have to run this every day. NTPD seems like a better fix.

Posted by: ctrunk514 Mar 17 2005, 10:38 AM

I was able to get this working by changing to another ntp time server. Not sure what the problem was with the 1st one but it seems to be working now.

Now I have to put ntpd into the startup of this system, anyone have any thoughts on the best way to accomplish that?


Posted by: Niks Sep 4 2008, 05:39 AM

hi i am having a similar problem, i am trying to syn the time from my domain controller to the linux system any idea how this is done?

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