NTP not working - coundn't start !

[DnD_1]

i had tried to start the ntp from SAM, but it couldn't start.....

anyone pls suggest the solution ?

here are the information...

bank1:/sbin/init.d #ntpq -p
ntpq: read: Can't assign requested address

bank1:/sbin/init.d #/sbin/init.d/xntpd start

bank1:/sbin/init.d #ps -ef | grep ntp
root 9596 9496 0 16:00:06 pts/2 0:00 grep ntp

bank1:/sbin/init.d #ntpdate -d 10.15.144.1
transmit(10.15.144.1)
transmit(10.15.144.1)
transmit(10.15.144.1)
transmit(10.15.144.1)
transmit(10.15.144.1)
server 10.15.144.1, port 123
stratum 0, precision 0, leap 00, trust 000
refid [0.0.0.0], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time: 00000000.00000000 Thu, Feb 7 2036 7:28:16.000
originate timestamp: 00000000.00000000 Thu, Feb 7 2036 7:28:16.000
transmit timestamp: cdd7980f.029d7000 Mon, Jun 8 2009 16:00:47.010
filter delay: 0.00000 0.00000 0.00000 0.00000
0.00000 0.00000 0.00000 0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
0.000000 0.000000 0.000000 0.000000
delay 0.00000, dispersion 64.00000
offset 0.000000

8 Jun 16:00:48 ntpdate[9600]: no server suitable for synchronization found


bank1:/sbin/init.d #ntpdate 10.15.144.1
8 Jun 16:01:32 ntpdate[9603]: no server suitable for synchronization found

[James R. Ferguson · Accepted solution]

Hi:

If you server's time differs from true time by more than 1000 seconds, NTP will fail to attempt to synchronize. Verify _your_ time with 'date -u'. Remember, NTP uses universal (UTC) time. Your server displays local time according to your TZ setting.

Regards!

...JRF...

[DnD_1]

hi james...

the time almost the same, different about 30 seconds...

but the ntp still cannot start...

[Rita C Workman]

Not too long ago we found our systems getting out of time sync. We had one internal server (serverTime) sync to an external internet-time-server. Hadn't noticed that the external internet-time-server had been removed, so all our other internal servers that sync to(serverTime) began to get farther and farther off.

I'd suggest starting from the beginning to fix time (...that sounds so Isaac Asimov..).
Stop xntpd
Confirm and assign internal server(s) to external time source.
Confirm your primary internal time server(s) are now syncing properly to external time source(s).

Once the above looks good....stop/start time on your secondary servers that sync internally to your internal primary time server(s).

...and like Jim said - if they are too far off, you'll have to manually reset the time to something closer. But if your going forward in time - not so bad. Do NOT go backwards in time, as you could have database issues. Co-ordinate for those situations.

Rgrds,
Rita

[Mel Burslan]

if you are gettign this error,

ntpq: read: Can't assign requested address

more than likely, the ntp port is occupied by another program, most probably a hung ntp related command.

lsof -i :123

should give you who is holding the port 123 (port that ntp uses) If there is nothing holding this port, I am not sure what to say

[Steven E. Protter]

Shalom,

NTP will not correct time differences more than a few hours.

The message is clear:
8 Jun 16:01:32 ntpdate[9603]: no server suitable for synchronization found

The server configured is not suitable for Unix ntp.

I know Windows Server 2000 is not appropriate as a time server without patches.

Most firewalls close the ntp port as well.

SEP

[DnD_1]

hi steve..

how do we know if the server is not suitable for the ntp server ?

the bank2 hp server run the same environment as bank1, but it working perfectly fine...

any more suggestion ?

[Michal Kapalka (mikap)]

hi,

the bank2 hp server run the same environment as bank1, but it working perfectly fine...

any more suggestion ?

check the

grep -i ntp /var/adm/syslog/syslog.log

and check it on both servers, may there will be a difference.

mikap

[DnD_1]

hi mikap..

there is no ntp log in syslog..... :(....probably has been disable..how do i reactive that ?

also, there's no differences between bank1 and bank2.....both have the same ntp ip address...but the bank2 working fine...

many thanks !!

[Michal Kapalka (mikap)]

hi,

for example on our system :

kmsemng1:/>grep -i ntp /var/adm/syslog/syslog.log
Jun 28 17:24:04 kmsemng1 xntpd[1318]: tickadj = 625, tick = 10000, tvu_maxslew = 61875
Jun 28 17:24:04 kmsemng1 xntpd[1318]: precision = 6 usec
Jun 28 17:28:21 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2
Jun 28 17:28:21 kmsemng1 xntpd[1318]: time reset (step) 0.658318 s
Jun 28 17:28:21 kmsemng1 xntpd[1318]: synchronisation lost
Jun 28 17:33:41 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2
Aug 31 03:38:06 kmsemng1 xntpd[1318]: synchronisation lost
Aug 31 10:06:18 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2
Nov 6 18:10:30 kmsemng1 xntpd[1318]: synchronisation lost
Nov 6 18:29:42 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2
Jan 1 01:00:01 kmsemng1 xntpd[1318]: leap second occurred, stepped time back 1 second
May 16 21:46:12 kmsemng1 xntpd[1318]: synchronisation lost
May 17 00:29:17 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2
May 17 03:50:21 kmsemng1 xntpd[1318]: synchronisation lost
May 18 12:45:36 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2
May 18 15:24:00 kmsemng1 xntpd[1318]: synchronisation lost
May 22 13:23:07 kmsemng1 xntpd[1318]: synchronized to 10.36.126.1, stratum=2

that means the ntp client is synchronised, if you don't have this entries in your syslog, them the host is not synchronyzing the time.

mikap