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What is the best way to keep the system clock synchronized? I have looked at ntp and netdate. Is one good over the other? Basically I want to know if what is the most secure way to keep the system clock insync. netdate will require me to open up some port 37... is this safe? ntp also... (1 Reply)
i have an HP UNIX box w/c acts as ntp server... I tried to change the time plus 8 minutes... the problem is that the other HP UNIX ntp client did not follow the time... when I tried to restart ntp client... using stop start it only sync to the server once... when I issue the command "ntpq -p", w/c... (2 Replies)
Hi Friends,
I want a shell script which will move certain .jar files from a specified location (say /publish/content) to (/publish/archive) on every saturday morning 6 am.
One more thing to add is that before moving files it must check free space at (/publish/archive), if it is more than 60 %... (7 Replies)
All here, thank you for listening. Now I've set up a Linux NTP server by adding a external windows NTP server in /etc/ntp.conf. Then I start the ntpd daemon. But how often does the Linux NTP server update its time with the external NTP server? I've looked up everywhere but found no information... (1 Reply)
hello all,,
am trying to do a time synchronization between a ntp server and a client, but facing some problems in doing so:
i run the ntpdate in debug mode and this is what i got. please help me out..
# ntpd -d -u 172.22.1.207
ntpd 4.2.2p1@1.1570-o Sun Aug 28 19:21:03 UTC 2011 (1)... (1 Reply)
Good morning,
My first post and first visit, so hello. I have been asked to see if one of our Linux boxes can have it's time sync automatically because the person who built the system has told our staff it cannot be done. To me that raised some flags because although I am no Linux expert, I just... (12 Replies)
Discussion started by: YSupport
12 Replies
7. Post Here to Contact Site Administrators and Moderators
Dear All,
Today, somewhere around 7:30 GMT (2:30 PM Eastern Time) www.unix.com will go down for what we hope is around 15 - 20 minutes as we change out some hardware on the server.
Thank you for your patience and support.
Neo (0 Replies)
I've scheduled few jobs using cron. But they are not running .....
What might be the possible reasons ?? Also tell me how to troubleshoot.............
Please help me .......
Thanks in Advance. (2 Replies)
There is one server in my company where the time is out of sync.
When I checked (compared with other servers whose time is correct), the XNTPD variable in /etc/rc.config.d/netdaemons was set as 0.
I changed this to 1, and tried restarting the xntpd process with :
# /sbin/init.d/xntpd start
... (4 Replies)
Discussion started by: anaigini45
4 Replies
LEARN ABOUT OSF1
ntp.drift
ntp.drift(4) Kernel Interfaces Manual ntp.drift(4)NAME
ntp.drift - Network Time Protocol (NTP) drift file
DESCRIPTION
When the NTP daemon (xntpd) is first started, it computes the error in the intrinsic frequency of the clock on the computer it is running
on. This process usually takes about a day or two after the daemon is started to compute a good estimate of this (and it needs a good
estimate to synchronize closely to its server). Once the initial value is computed, it will change only by relatively small amounts during
the course of continued operation.
The driftfile declaration should always be included in the ntp.conf file. This provides xntpd with complete path name to a file in which
it can store the current value of the frequency error. That way, if the daemon is stopped and restarted, it can reinitialize itself to the
previous estimate without spending time recomputing the frequency estimate.
The ntp.drift file contains one line with the following format: freq_offset flag Specifies the nominal frequency offset. DO NOT modify
this field. Specifies the method used to improve system clock accuracy. Specifies that xntpd runs a Phase-Locked Loop (PLL) algorithm to
keep synchronized with other hosts. This is the default. Specifies the use of the PLL algorithm in the kernel. This requires the
NTP_TIME kernel option. After the option is configured in the kernel, edit the ntp.drift file and change the flag value to 1.
See System Administration for information on the NTP_TIME kernel option.
FILES
Conventional name of the drift file
RELATED INFORMATION
Commands: ntpdate(8), ntpq(8), xntpd(8), xntpdc(8)
Files: ntp.conf(4)
Network Administration, System Administration delim off
ntp.drift(4)