NTP config help

[raj sourabh]

Hi All,

Thanks for your responses.
I did following;

1. Changed the stratum from 10 to 1 on Master server.

2. I have changed the ntp.conf file on the client machine.
server 192.168.6.9
restrict default ignore
restrict 127.0.0.1
restrict 192.168.6.9 mask 255.255.255.255 nomodify notrap noquery
driftfile /var/lib/ntp/drift


Removed all  the above except "server 192.168.6.9 "..

Now when I start the ntpd , It successfully synchronizes with Master server.

Thanks,

Raj Panda
On Thu, Feb 10, 2011 at 4:00 PM, 邓卫华 <dengwh at bestcheer.com> wrote:

>
>
> Hi, the stratum is how many hop from internet NTP server to local
> server .
>
> the following information is my ntp server's set.
>
> Note:
> Please run "ps aux |grep ntpd" to confirm whether there exists more than
> NPTD process.
>
> restrict default kod nomodify notrap nopeer noquery
>
>
> restrict -6 default kod nomodify notrap nopeer noquery
> restrict
> 127.0.0.1 restrict -6 ::1
> restrict 192.168.0.0 mask 255.255.0.0 nomodify
> notrap
>
> restrict 172.16.0.0 mask 255.255.0.0 nomodify notrap
> server
> 192.168.0.14
>
> server 210.72.145.44
>
> server 133.100.11.8
>
> fudge
> 127.127.1.0 stratum 3 #(local ntp server, 192.168.0.14, internet ntpd
> server.)
>
> driftfile /var/lib/ntp/drift
>
> keys /etc/ntp/keys
>
> logfile
> /var/log/ntp.log
>
> On Thu, 10 Feb 2011 10:15:29 +0000, Cillian Lyons
> wrote:
>
> > Hi,
> >
> > I think its the stratum of the ntp server that is
> the cause. What stratum have you set the ntp server? 10?
> >
> > If so ,10
> is the default stratum of the ntp server if you dont have a time source
> ie local clock. This is also the default stratum for the ntp client, its
> local clock. the client is looking for a stratum than is lower then
> itself. As you have said you are on a closed system you need to either
> attach a local time source to your server ie gps/radio/internet or lower
> the stratum value for the local clock on the ntp server.
> >
> > Regards
> >
>
> > Cillian
> >
> > raj sourabh wrote:
> >
> > Hi, Thanks for the reply. But
> since the synchronization with the server is failing, How will cron do?
> Regards, Raj On Thu, Feb 10, 2011 at 10:18 AM, 邓卫华 wrote: > > > on
>  client, please run ntp server ip address in crond. > > On Thu, 10 > Feb
> 2011 08:18:11 +0400, raj sourabh wrote: > > > Hi All, > > > > My >
> production platform is a closed system (without internet). I have > > >
> configured a NTP server (on rhel5.5) which is started and running >
> without > > error. The problem is that all windows client machines are >
> able to > > sychronise with my NTP server but RHEL client machines are
> not > able to synch > > the time. > > > > my client config are; > > > >
> > */etc/ntp.conf* > > ** > > *server 192.168.6.9 > > restrict default
> ignore > > > restrict 127.0.0.1 > > restrict 192.168.6.9 mask
> 255.255.255.255 nomodify > notrap noquery > > driftfile
> /var/lib/ntp/drift > > * > > > > i have entry of > my NTP server name in
> step-tickers as well. when I start !
> > the > >
> > service > on client I
> get; > > > > [root at TESTAPP ~]# service ntpd restart > > Shutting > down
> ntpd: [ OK ] > > ntpd: Synchronizing with time server: [FAILED] > > >
> Starting ntpd: [ OK ] > > [root at TESTAPP ~]# ntpdate -q 192.168.6.9 > > >
> server 192.168.6.9, stratum 10, offset -0.001541, delay 0.02571 > > 10
> Feb > 08:12:25 ntpdate[8822]: no server suitable for synchronization
> found > > > [root at TESTAPP ~]# > > > > ----- > > > > NTP server config
> is; > > > > *server > 127.127.1.0* > > *restrict default kod nomodify
> notrap noquery nopeer > > > restrict 127.127.1.0 mask 255.255.255.0
> nomodify notrap noquery > > > restrict 192.168.11.0 mask 255.255.255.0
> nomodify notrap > > restrict > 127.0.0.1* > > *fudge 127.127.1.0 stratum
> 10 > > driftfile > /var/lib/ntp/drift > > broadcastdelay 0.008 > > keys
> /etc/ntp/keys > > logfile > /var/log/ntp > > tos orphan 10 > > * > > > >
> As mentioned above, with this > server configuration windows clients are
> > > successfully synchronizing > time with!
> > ntp
> > server. but rhel
> servers are not. > > any help?? > > > > > Thanks, > > > > RAJ > > -- > >
> Best Cheer (XiaMen) Stone Works CO.,LTP. > T: > 0592-7221600 > > -- >
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> --
>
> Best Cheer
> (XiaMen) Stone Works CO.,LTP.
> T: 0592-7221600
>
>
> Links:
> ------
> [1]
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> [2] mailto:dengwh at bestcheer.com
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