Questions tagged [ntpdate]
63 questions
23
votes
10 answers
Compare NTPD and ntpdate
What are the pros and cons between these two ways to synchronize your server?
It seems to me that your server would probably not drift more than 1 second every day, so ntpdate on a crontab would be ok. But I heard you could use redundant NTP servers…
Unknown
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13
votes
2 answers
ntpdate and ntpd failing to sync clock on Linux
I have a strange problem with one of my servers. ntpd and ntpdate fail to work, but debugging shows no errors at all. At first I thought maybe a local or network firewall was blocking UDP port 123, but that is not the case- this server can talk…
Crash Override
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7
votes
3 answers
How to set up local ntp server without internet access on ubuntu?
I have tried several guides on how to set up a local ntp server on ubuntu but none seem to work correctly. My servers are drifting heavily in time for some reason and I have to keep their time close together because I run databases that require…
j9dy
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7
votes
2 answers
how to auto-run ntdpdate command?
I have a few dedicated servers and for some reason they are totally unable to mantain the time properly synchronized, every few days they start having differences of minutes in the clock. So I have to manually open Putty, connect, login, and run the…
andreszs
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6
votes
1 answer
Different offset in "ntpq -p" and "ntpdate -q"
I'm sometimes notified by our system monitoring about too high offsets in
ntpd. When issuing ntpdate, it shows none. As ntpd adjusts time slowly, it seems to "think" there is an offset which needs to be adapted. But shouldn't ntpdate show this…
Christian
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6
votes
2 answers
NTP running, server time is wrong on VM
The server time was 7 hours off (instead of 10AM it was 3AM, even though date showed the correct timezone). The output for ntpq was:
$ ntpq -p
remote refid st t when poll reach delay offset …
sina
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5
votes
5 answers
ntpdate works, but ntpd can't synchronize
This is in RHEL 5.5.
First, ntpdate to the remote host works:
$ ntpdate XXX.YYY.4.21
24 Oct 16:01:17 ntpdate[5276]: adjust time server XXX.YYY.4.21 offset 0.027291 sec
Second, here are the server lines in my /etc/ntp.conf. All restrict lines have…
dafydd
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5
votes
3 answers
Is an ntpdate correction atomic?
I've got the following in /var/log/syslog, from yesterday (July 30th)
Dec 16 22:54:05 omap ntpdate[432]: step time server 91.189.94.4 offset 12052648.821465 sec
ntpdate 91.189.94.4 "corrected" my clock from July 30th to December 16th! According to…
Peter Woo
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5
votes
2 answers
ntpdate: no server suitable for synchronization found
[root@myHost default]# ntpdate -d pool.ntp.org
15 Apr 11:21:18 ntpdate[6331]: ntpdate 4.2.0a@1.1190-r Thu Feb 24 20:39:57 EST 2011 (1)
Looking for host pool.ntp.org and service ntp
host found :…
jasy
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5
votes
4 answers
Disable Time Synchronization on Ubuntu
I am setting up a development environment with Ubuntu in a virtual machine. The date in the VM must be in 2009 due to some silly timebombing issues, so I want to disable any automatic time synchronization (e.g. ntpdate).
$ sudo apt-get remove…
Andres Jaan Tack
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4
votes
5 answers
ntpdate not updating system time in XenServer VM
We have a Debian webserver that I am trying to use ntpdate to keep the time in sync.
When I run
ntpdate ntp0.cs.mu.oz.au
I receive
16 Sep 10:55:36 ntpdate[21626]: step time server 128.250.36.2 offset 318.914011 sec
With no errors, which should be…
LukeR
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3
votes
2 answers
NTP 27 seconds Difference
I have DMZ server configured as NTP server to connect to external NTP servers and sync time in all devices in my corporate network. Below are the contents of my ntp.conf file in the DMZ server
server 127.127.1.0
fudge 127.127.1.0 stratum 6
driftfile…
Arun Krishnan
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3
votes
3 answers
Do "service ntpd restart" and "ntpdate " do the same work?
I often get large offsets when checking ntpd using ntpq -p, I generally restart the ntp daemon and it fixes the issue. I wanted to know if i can try the ntpdate instead of restarting ntpd. Since this is a production box wanted to…
Shiva J
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3
votes
1 answer
NTP not syncing automatically with my internal NTP server
I installed ntp on a centos server.
I modified /etc/ntp.conf replacing the default server entries with one entry to my internal NTP server's IP (1.2.3.4 is the IP of the NTP server):
server 1.2.3.4 iburst
When I reboot the server and run ntpstat…
red888
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3
votes
1 answer
NTP can't synchronise or find a suitable server
The problem I'm trying to solve is that NTP won't synchronize:
$ sudo ntpstat
unsynchronised
time server re-starting
polling server every 64 s
Edit: Here's some ntpq output:
$ sudo ntpq -c peers
remote refid st t when poll…
Leo
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