Just a footnote,
ntpd will not update the time if the offset is more than 1000 seconds.
e.g. the clock is more than 15 minutes off.
You have to stop ntpd, run ntpdate, restart ntpd.
regards,
Drew
Bruce N wrote:
Thanks for the input both to Lloyd and Rafael,
This is not a VPs and it's real Quad Core server.
I just did a "service ntpd statud" and it shows running. I don't want to do an
ntpd restart or update until past office hours due to all recording now being recorded
under the name June-01 and I don't want to mix everything up. But I definitly want to
find the root of this problem. Could it have been that the ntp pool servers from CentOS
misbehaved?
Also, the contents of /etc/ntp.conf is as following:
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
restrict -6 ::1
# Hosts on local network are less restricted.
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
server 0.centos.pool.ntp.org
server 1.centos.pool.ntp.org
server 2.centos.pool.ntp.org
#broadcast 192.168.1.255 key 42 # broadcast server
#broadcastclient # broadcast client
#broadcast 224.0.1.1 key 42 # multicast server
#multicastclient 224.0.1.1 # multicast client
#manycastserver 239.255.254.254 # manycast server
#manycastclient 239.255.254.254 key 42 # manycast client
# Undisciplined Local Clock. This is a fake driver intended for backup
# and when no outside source of synchronized time is available.
server 127.127.1.0 # local clock
fudge 127.127.1.0 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 /var/lib/ntp/drift
# Key file containing the keys and key identifiers used when operating
# with symmetric key cryptography.
keys /etc/ntp/keys
# Specify the key identifiers which are trusted.
#trustedkey 4 8 42
# Specify the key identifier to use with the ntpdc utility.
#requestkey 8
# Specify the key identifier to use with the ntpq utility.
#controlkey 8
From: [email protected]
Date: Wed, 2 Jun 2010 16:24:32 -0400
Subject: Re: [on-asterisk] What could do an automatic Date and Time change on
CentOS?
To: [email protected]
CC: [email protected]
Hi Bruce
I assume you are using CentOS.
yum -y install ntp
chkconfig ntpd on
service ntpd start
ntpdate pool.ntp.org
It is recommended every time after install os setup the ntpd
Thanks
Lloyd
On Wed, Jun 2, 2010 at 3:42 PM, Bruce N<[email protected]> wrote:
Hi Guys,
Weired problem here. System clock shifted back by less than a day. I checked the DD-WRT
router shows proper time. "timeconfig" shows Toronto and uses UTC.
Any idea what could have caused this and how to fix it?
r...@pbx:/var/spool/asterisk/monitor $ clock
Tue 01 Jun - 08:15:45 PM EDT -0.000278 seconds
Instead of today's time:
Wed 02 Jun - 3:35 P.M.
Thanks,
Bruce
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