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7.6

My NTP Synchronization is going Crazy !

Asked by umoorjani in Linux, Linux Distributions

Tags: clockstats, ntp, ntpd

Hi Experts,

I have installed an ntp server on my network for my equipements. I have 2 networks, and I installed one on each networks since they are on distinct locations.
Now I have copied and pasted the EXACT configuration on both  ntp servers. I need the server to recieve time at stratum 2 and I need the clients to recieve time at stratum 3. Notice the LOCAL(0) at the ntp -p of the SERVER2 CLIENT RESULTS below. How can I fix this ? Can anyone help ?

Uday MOORJANI

==================START FILE INCLUDE========================


SERVER 1 (THE WORKING ONE):

# /etc/ntp.conf, configuration for ntpd

# ntpd will use syslog() if logfile is not defined
logfile /var/log/ntpd

driftfile /var/lib/ntp/ntp.drift
statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable


# You do need to talk to an NTP server or two (or three).
#server ntp.your-provider.example

# pool.ntp.org maps to more than 100 low-stratum NTP servers.
# Your server will pick a different set every time it starts up.
#  *** Please consider joining the pool! ***
#  ***  <http://www.pool.ntp.org/#join>  ***

server ntp-sop.inria.fr prefer
fudge ntp-sop.inria.fr stratum 4
server ntp-s1.cise.ufi.edu
fudge ntp-s1.cise.ufi.edu stratum 4
server 213.188.x.249
fudge 213.188.x.249 stratum 5
server 213.16.x.253
fudge 213.16.x253 stratum 5

## uncomment for extra reliability

# ... and use the local system clock as a reference if all else fails
# NOTE: in a local network, set the local stratum of *one* stable server
# to 10; otherwise your clocks will drift apart if you lose connectivity.
server 127.127.1.0
fudge 127.127.1.0 stratum 8


# By default, exchange time with everybody, but don't allow configuration.
# See /usr/share/doc/ntp-doc/html/accopt.html for details.
restrict default kod notrap nomodify nopeer noquery

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1 nomodify

# Clients from this (example!) subnet have unlimited access,
# but only if cryptographically authenticated
#restrict 192.168.123.0  mask  255.255.255.0 notrust

# If you want to provide time to your local subnet, change the next line.
# (Again, the address is an example only.)
#broadcast 192.168.123.255

# If you want to listen to time broadcasts on your local subnet,
# de-comment the next lines. Please do this only if you trust everybody
# on the network!
#disable auth
#broadcastclient


SERVER RESULT (I NEEDED THE SERVER TO BE ON STRATUM 2):
===========
ntpserver:/root# ntpq -p

     remote            refid      st t when poll reach   delay   offset  jitter
==============================================================================
*ntp-sop.inria.f     195.220.94.163   2 u  656 1024  377  200.311  -15.633  14.889
+213.188.x.249 128.227.205.3    2 u  578 1024  377  182.498  -11.829  16.085
+213.16.x253     128.227.205.3    2 u  620 1024  377   73.865  -15.976  15.126
 LOCAL(0)             LOCAL(0)         8 l   51   64  377    0.000    0.000   0.001

CLIENT RESULT (I NEED THE CLIENT TO BE ON STRATUM 3) :
===========
ntpclient:/root# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*213.188.x.28  138.96.64.10     3 u   82  256  377    0.135    0.176   0.024
 LOCAL(0)        LOCAL(0)        13 l   55   64  377    0.000    0.000   0.001


SERVER 2 (NOT WORKING!!!):

# /etc/ntp.conf, configuration for ntpd

# ntpd will use syslog() if logfile is not defined
#logfile /var/log/ntpd

driftfile /var/lib/ntp/ntp.drift
statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable


# You do need to talk to an NTP server or two (or three).
#server ntp.your-provider.example

# pool.ntp.org maps to more than 100 low-stratum NTP servers.
# Your server will pick a different set every time it starts up.
#  *** Please consider joining the pool! ***
#  ***  <http://www.pool.ntp.org/#join>  ***

server ntp-sop.inria.fr prefer
fudge ntp-sop.inria.fr stratum 4
server ntp-s1.cise.ufi.edu
fudge ntp-s1.cise.ufi.edu stratum 4
server 213.188.x.249
fudge 213.188.x.249 stratum 5
server 213.16.x.253
fudge 213.16.x.253 stratum 5

#ntp.univ-lyon1.fr
#server pool.ntp.org

#server pool.ntp.org
## uncomment for extra reliability

# ... and use the local system clock as a reference if all else fails
# NOTE: in a local network, set the local stratum of *one* stable server
# to 10; otherwise your clocks will drift apart if you lose connectivity.
server 127.127.1.0
fudge 127.127.1.0 stratum 8

# By default, exchange time with everybody, but don't allow configuration.
# See /usr/share/doc/ntp-doc/html/accopt.html for details.
restrict default kod notrap nomodify nopeer noquery

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1 nomodify

# Clients from this (example!) subnet have unlimited access,
# but only if cryptographically authenticated
#restrict 192.168.123.0  mask  255.255.255.0 notrust
#restrict 213.0.0.0 mask 255.0.0.0 notrust
#restrict 172.17.0.0 mask 255.255.0.0 notrust

# If you want to provide time to your local subnet, change the next line.
# (Again, the address is an example only.)
#broadcast 192.168.68.255

# If you want to listen to time broadcasts on your local subnet,
# de-comment the next lines. Please do this only if you trust everybody
# on the network!
#disable auth
#broadcastclient

SERVER RESULT (WORKING!!!):

ntpserver2:/root# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ntp-sop.inria.f 130.149.17.8     2 u   21   64    1  195.832   44.184   0.002
 213.188.x.249 128.227.205.3    2 u   21   64    1  180.029   47.978   0.002
 213.16.x.253   128.227.205.3    2 u   20   64    1  322.103  170.325   0.002
 LOCAL(0)        LOCAL(0)         8 l   22   64    1    0.000    0.000   0.002

CLIENT RESULT (NOT WORKING!!!!!!):

ntpclient2:/root# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 monitor2-mq.med LOCAL(0)         9 u    3   64    1    1.319  -528.32   0.002
 LOCAL(0)        LOCAL(0)        13 l    2   64    1    0.000    0.000   0.002


======================END FILE INCLUDE============================
[+][-]08/04/06 01:29 PM, ID: 17252936Expert Comment

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[+][-]08/04/06 01:41 PM, ID: 17253016Accepted Solution

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About this solution

Zones: Linux, Linux Distributions
Tags: clockstats, ntp, ntpd
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Solution Provided By: kblack05
Participating Experts: 4
Solution Grade: A
 
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