Re: ntp

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Author: James Mcphee
Date:  
To: Main PLUG discussion list
Subject: Re: ntp
What I'd do is ntpdate -bu <time server> to force the time, then do an ntpd
start and check messages to see if it complains about anything, check
process list to see if it started, and do an ntpq -c opeers after 15
minutes to see what it thinks about life. You seem to have an ntpd.log, so
maybe that has some info.

On Tue, Sep 8, 2015 at 7:50 PM, Tejeev Patel <> wrote:

> So I'm thinking there has to be some sort of concurrent startup runlevel
> issue.  Not really sure how to adjust this, but do you see any place in
> that init script that could cause this or something left out of the
> dependencies or something?  Here's the first bit of the init.d again:
> ### BEGIN INIT INFO
> # Provides:        ntp
> # Required-Start:  $network $remote_fs $syslog
> # Required-Stop:   $network $remote_fs $syslog
> # Default-Start:   2 3 4 5
> # Default-Stop:
> # Short-Description: Start NTP daemon
> ### END INIT INFO

>
>
> On Tue, Sep 8, 2015 at 7:23 PM, Tejeev Patel <>
> wrote:
>
>> Hi all,
>> Thanks for your replies James and Hans. I've included some responses in
>> the bellow email:
>>
>>
>>> moin moin TJ,
>>>
>>> what James said in regards to debugging ntp :).
>>>
>> Ill check on these step tickers, but my understanding was that the -g
>> option should take care of that. Can I put in sdout's in the init script
>> to log when stuff is being done so i can maybe trace where it quits? Any
>> recommendations on where to put them in or how to do some debugging here?
>>
>>
>>> Here are some other things to check.
>>>
>>> Is there some ntp process already running?
>>>
>>> ps auxw | grep ntp
>>>
>>> No NTP process already running.
>>
>>
>>> Is there a config file in /etc/default/ that has an entry to not start
>>> ntp?
>>>
>>> Only see an ntpdate config that basically says to look at the server
>> list in ntp.conf rather than it's own and a ntp config that includes the
>> option -g that I was originally looking to include here.
>>
>> Is ntpdate installed and configured to prevent ntpd from starting?
>>>
>>> ntpdate is apparently installed
>>
>> As James mentioned, ntp will refuse to change the time if it's off too
>>> much. Check to see if the systems are within a couple of minutes of the
>>> actual time.
>>>
>>> ntp will quit if the time is off by 1000 s or more but the -g option
>> should override that.
>> ( -g Normally, ntpd exits with a message to the system log if the
>> offset exceeds the panic threshold, which is 1000 s by default. This option
>> allows the time to be set to any value without restriction; however, this
>> can happen only once. If the threshold is exceeded after that, ntpd will
>> exit with a message to the system log. This option can be used with the -q
>> and -x options.)
>>
>> Verify your hardware clock is set to UTC.
>>>
>>> Make sure your OS is set at the proper offset from UTC, e.g. you're set
>>> to
>>> now and AZ time zone, rather than now and eastern time zone.
>>>
>>> If the boxen are servers they should be set to UTC. Star date blah, blah,
>>> blah and all that.
>>>
>> Both hardware and software are set to UTC on our servers.
>>
>>
>>> cioa,
>>>
>>> der.hans
>>>
>>
>>
>>
>
>
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--
James McPhee

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