question Re: How do I resolve clock offset issue? in Support Questions

How do I resolve clock offset issue?

Kewal — Tue, 01 Jul 2014 21:34:24 GMT

I get following health issue.

The host's NTP service did not respond to a request for the clock offset.

How do I resolve it?

Thanks,

Kewal

Re: How do I resolve clock offset issue?

battlesysadmin — Wed, 02 Jul 2014 01:08:31 GMT

I just saw this after an office move. The servers were offline for a while.

This is what I did for our CentOS Linux servers (similar, but not the same, steps would work for Ubuntu/Debian):

* verified/updated the /etc/ntp.conf file to be the same across the cluster

* stopped the ntp daemon: /etc/init.d/ntpd stop

* connected to the ntp server named in the ntp.conf file: ntpupdate <ntp_server>

* started the ntp daemon: /etc/init.d/ntpd start

* added ntpd to the startup manager: chkconfig add ntpd

* set ntpd to start in default reunlevels: chkconfig ntpd on

This cleared the offset issue. If this doesn't do it for you, you might also have to look into drift, or dig deeper into the time synchronization.

Re: How do I resolve clock offset issue?

Kewal — Wed, 02 Jul 2014 02:44:48 GMT

Thanks a lot for you detailed answer.

I deleted the cluster and rebuilt it from scratch. Now, it is working fine.(Fingers crossed)

But, It seems, your procedure would definitely solve the problem.

Re: How do I resolve clock offset issue?

udharmadhikari — Thu, 05 Feb 2015 07:27:53 GMT

Thanks for your detailed answer. it helped me!

I had to repeat the step 4 and 5 twice; but it fixed my issue. I'm keeping the fingers crossed now! 🙂

Re: How do I resolve clock offset issue?

hari-ericsson — Sun, 22 Feb 2015 05:52:26 GMT

Many thanks. I followed these steps and it fixed my clock offset issue.

* verified/updated the /etc/ntp.conf file to be the same across the cluster

* stopped the ntp daemon: /etc/init.d/ntpd stop

* connected to the ntp server named in the ntp.conf file: ntpupdate <ntp_server>

* started the ntp daemon: /etc/init.d/ntpd start

* added ntpd to the startup manager: chkconfig add ntpd

* set ntpd to start in default reunlevels: chkconfig ntpd on

Re: How do I resolve clock offset issue?

nauseous — Tue, 17 Mar 2015 15:24:48 GMT

I found this article which was super helpful.

http://www.linuxsecrets.com/categories/linux-performance/performance-tips/redhat-prerequisites-benchmarking-and-stress-testing-on-hadoop-cluster

Re: How do I resolve clock offset issue?

anton_85 — Thu, 11 Jun 2015 06:55:19 GMT

i got the next:

$sudo service ntp stop
* Stopping NTP server ntpd [ OK ]
root@cluster-01:~# sudo ntpdate ntp.ubuntu.com
11 Jun 06:47:14 ntpdate[29757]: no server suitable for synchronization found

i try to do it with the with NTP .. instead NTPD

....

Re: How do I resolve clock offset issue?

nauseous — Thu, 11 Jun 2015 16:24:46 GMT

Hi anton_85

Try this article, it explains time zones and settings which is very well explained.

http://www.linuxsecrets.com/easyblog/2015/01/30/1374-fixing-date-and-setting-time-and-zone-on-rhel-6-from-command-line

Re: How do I resolve clock offset issue?

anton_85 — Thu, 11 Jun 2015 16:36:13 GMT

Hi nauseous,

apprently, the problem is at my firewall, where I can't ping my gateway neither other sites out of my network.

so that's way i can't see it.

Re: How do I resolve clock offset issue?

sathishkumar — Wed, 17 Jun 2015 13:12:43 GMT

Hi,

If firewall is the problem you can ask network admin to open add chains to that specific URL . or the other way you can set up your own NTP server within that network itself.

Thanks,

Sathish

Re: How do I resolve clock offset issue?

Grizzly — Wed, 17 Jun 2015 15:47:48 GMT

Check with your network administrators, they have NTP services you can
point to most likely within the firewall.

Re: How do I resolve clock offset issue?

anton_85 — Wed, 17 Jun 2015 15:54:00 GMT

Yes, the problem was at the Firewall , one of the rules was changes ;

after the problem was fix the NTP was updated.

Thanks so much for your help

Re: How do I resolve clock offset issue?

sadineni — Thu, 29 Oct 2015 00:20:37 GMT

Thanks for the help

just 2 steps my issue is resolved might usefull to other

i tried

/etc/init.d/ntpd start

/etc/init.d/ntpd stop

it works for me

Re: How do I resolve clock offset issue?

PasLeChoix — Tue, 24 May 2016 14:51:27 GMT

Thanks, it works for me too

Re: How do I resolve clock offset issue?

Andor — Mon, 29 Aug 2016 09:59:18 GMT

I had to restart Cloudera SCM Agent to fix this alert after NTP reconfiguration:

service cloudera-scm-agent restart

Re: How do I resolve clock offset issue?

nauseous — Mon, 29 Aug 2016 15:08:44 GMT

I use puppet and foreman to configure each system the same for all ntp
clients to a central ntp server.

Great information here
http://www.linuxsecrets.com/blog/4tutorial-and-install-howto/2014/06/26/906-how-to-install-and-configure-linux-ntp-server-and-client

Re: How do I resolve clock offset issue?

bvk — Fri, 25 Aug 2017 13:15:36 GMT

I have installed ntpd on all 8 nodes, checked the ntp.conf file across the nodes, its same..

So i stopped the ntpd and tried running the ntpupdate command and its saying command not found.. So could you please explain this step?

-> connected to the ntp server named in the ntp.conf file: ntpupdate <ntp_server>

Re: How do I resolve clock offset issue?

nauseous — Fri, 25 Aug 2017 15:18:55 GMT

There is no ntpupdate command.

You can update ntp by typing

# ntpdate -u {Main node sync'ed to NTP server IP address or Domain name
here}

Example

# ntpdate -u domains.ntp.com

OR

# ntpdate -u 192.168.0.2

You should only have 1 node announcing NTP and other nodes getting time
from main node.

Re: How do I resolve clock offset issue?

bvk — Sun, 27 Aug 2017 07:45:11 GMT

Thanks a lot.. 🙂

Re: How do I resolve clock offset issue?

Bittu1371 — Mon, 29 Nov 2021 15:04:29 GMT

If you are facing issue Clock offset issue then there will be problem with your ntp is not in sync.

To resolve follow some commands

Check in which host it is giving problem go under that host through CLI and

1. systemctl status ntpd.service (For checking the status, if its not working the it showing Inactive message)

2. route -n copy the ntp server ip address (You will find under Destination column)

3. ntpdate <ntp server ip address>

4. systemctl start ntpd.service (for starting & syncing your host, after firing wait for sometime)

5. ntpstat (for checking whether it is synchronized or not it should be in synchronized)

after performing above steps your Clock offset issue will get resolved.

Regard,