NTP config help

[邓卫华]

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
  

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