Re: ntp daemon.

[Don Juan <donjuansjiz@gmail.com>]

On 01/18/2012 10:38 AM, Rob Owens wrote:
> On Wed, Jan 18, 2012 at 12:22:57PM -0500, Joey L wrote:
> > I have installed ntp server on my debian box.
> > I am trying to sync with a public external time server.
> > I have found a couple on the internet - but none seem to want to sync
> > with me or my ntp daemon does not want to do it.
> >
> > I have entered the following in my /etc/ntp.conf file:
> >
> > server 0.us.pool.ntp.org
> > server 1.us.pool.ntp.org
> > server 2.us.pool.ntp.org
> > server 3.us.pool.ntp.org
> >
> > I ran ntpdate and I get this error message -
> > 18 Jan 12:43:23 ntpdate[26430]: no servers can be used, exiting
> ntpdate should not / cannot be used while ntpd is running.  Make sure
> that ntpd is running and then run:
>
> ntpq -p
>
> That'll show you what ntp servers you are communicating with.
>
> You do not need to open any inbound ports on your firewall in order for
> ntpd to run.  Also, the default debian ntp.conf file works if you are
> just trying to keep your own time accurate, and not trying to act as an
> ntp server for other machines.
>
> -Rob
make sure you have udp on port 23 open for inbound and outbound on 
iptables.

You can run ntpdate -u YOURTIMESERVEROFCHOICE
Or you could also run ntpd -qg
Or if your ntpd is already running stop it then try again and if all 
works verify your settings in the conf file. Reboot try one last time 
and should be squared away.

Also if you want sysclock and hwclock to match make sure your hwclock is 
set to UTC or localtime depending on your config. Then if hwclock is 
still off run hwclock --systohc