[ntp:questions] cant connect to ntp server
Sachin Prasad
sprasad at cardcommerce.com
Wed Jun 8 22:34:01 UTC 2005
1) I need help. Don't know what to do next. The ntp server does not connect to any servers.
I modified the checkpoint firewall to allow both tcp and udp port 123 for my machine. I then configured the ntp.conf file
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
# -- CLIENT NETWORK -------
# Permit systems on this network to synchronize with this
# time service. Do not permit those systems to modify the
# configuration of this service. Also, do not use those
# systems as peers for synchronization.
restrict 10.253.32.0 mask 255.255.255.0 notrust nomodify notrap
# --- OUR TIMESERVERS -----
# --- NTP MULTICASTCLIENT ---
#multicastclient # listen on default 224.0.1.1
# restrict 224.0.1.1 mask 255.255.255.255 notrust nomodify notrap
# restrict 192.168.1.0 mask 255.255.255.0 notrust nomodify notrap
# --- GENERAL CONFIGURATION ---
#server 127.127.1.0 # local clock
server 66.187.224.4
server time.nist.gov
server clock.isc.org
server clock.via.net
server clock.redhat.com
fudge 127.127.1.0 stratum 10
driftfile /etc/ntp/drift
broadcastdelay 0.008
logfile /var/log/ntpd.conf
authenticate yes
keys /etc/ntp/keys
2) I waited a day and i ran ntpq -np
remote refid st t when poll reach delay offset jitter
==============================================================================
66.187.224.4 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
192.43.244.18 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
204.152.184.72 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
209.81.9.7 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
209.132.176.4 0.0.0.0 16 u - 1024 0 0.000 0.000 4000.00
This is the messages from the /var/log/messages
7 Jun 22:50:04 ntpd[31831]: signal_no_reset: signal 17 had flags 4000000
7 Jun 22:50:04 ntpd[31829]: running as uid(38)/gid(38) euid(38)/egid(38).
3) I checked the connectivity to clock.redhat.com. My clock got synced to the redhat clock
[root at fslinux01 root]# ntpdate clock.redhat.com
8 Jun 15:08:01 ntpdate[17153]: the NTP socket is in use, exiting
[root at fslinux01 root]# date
Wed Jun 8 15:08:04 PDT 2005
[root at fslinux01 root]# /etc/rc.d/init.d/ntpd stop
Shutting down ntpd: [ OK ]
[root at fslinux01 root]# ntpdate clock.redhat.com
8 Jun 15:11:49 ntpdate[17174]: step time server 209.132.176.4 offset 183.711862 sec
[root at fslinux01 root]# date
Wed Jun 8 15:11:52 PDT 2005
4) I restarted the service
ntpq> as
ind assID status conf reach auth condition last_event cnt
===========================================================
1 38916 8000 yes yes none reject
2 38917 8000 yes yes none reject
3 38918 8000 yes yes none reject
4 38919 8000 yes yes none reject
5 38920 8000 yes yes none reject
ntpq> rv 38916
status=8000 unreach, conf, no events,
srcadr=clock2.redhat.com, srcport=123, dstadr=10.253.32.1, dstport=123,
leap=11, stratum=16, precision=-18, rootdelay=0.000,
rootdispersion=0.000, refid=0.0.0.0, reach=000, unreach=2, hmode=3,
pmode=0, hpoll=6, ppoll=10, flash=00 ok, keyid=0, offset=0.000,
delay=0.000, dispersion=0.000, jitter=4000.000,
reftime=00000000.00000000 Wed, Feb 6 2036 22:28:16.000,
org=00000000.00000000 Wed, Feb 6 2036 22:28:16.000,
rec=00000000.00000000 Wed, Feb 6 2036 22:28:16.000,
xmt=c651f036.cf4c8ffb Wed, Jun 8 2005 15:31:18.809,
filtdelay= 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00,
filtoffset= 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00,
filtdisp= 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0
ntpq>
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