OBTW, I forgot to mention, one of the most common uses of ntpdate is in the root crontab file, for example:
From the shell:
Also, here is a site dedicated to helping you find a valid time server for your site:
Quote:
The pool.ntp.org project is a big virtual cluster of timeservers providing reliable easy to use NTP service for millions of clients.
The pool is being used by millions or tens of millions of systems around the world. It's the default "time server" for most of the major Linux distributions and many networked appliances (see information for vendors).
Hello,
I'm looking for assitance on setting up network time protocol on my HP-ux boxes.
I have edit the .conf file accordingly. And /etc/services. But whenever I try and start the service nothing happens at all. No error message, nothing.
I have a SCO box as a time server and I wish... (0 Replies)
Hi experts,
I've a master server which sync to ntp time server daily by using xntpd daemon. Then my client servers will use ntpdate through cron job to synchronize the time hourly. (By using ntpupdate -s -B 'master server')
My question is, now I'll need to synchronize to a oracle server which... (2 Replies)
Hi Guys,
A weird problem. I have disabled ntpd daemon on a HP server and placed
ntpdate in crontab instead and redirected the log to a file. This command
in cron synchronizes the server with a local time server every 15 minutes.
The weird part is that on 3 specific times (5:00 am, 10:00 am,... (2 Replies)
Hi there,
Hi have a group of computers + a server (all debians) connected to each other on a LAN.
For some reasons that I've not decided and that I can't change, the computers cannot connect to the net. Moreover, the server has no ntp service.
Though, I need to find a way of setting all... (4 Replies)
as advised and documented, i'm trying to use the ntpd -gq instead of ntpdate. The result is that clock not set. as below. However ntpdate is working ok and had set the clock correctly
this is the ntp.conf file:
# cat /etc/ntp.conf
logfile /var/log/ntp.log
driftfile /var/lib/ntp/drift... (6 Replies)
Hi,
Could somebody please explain me.
why is it necessary to execute the "ntpdate" command only when ntp daemon is stopped , and also the probabale solution to reduce the high offset value.
Thanks !!
Laxxi (4 Replies)
Hi all. I'm new to this forum and Linux in general. Last month I ran into a problem at work and never got around to solving it.
We have an old Linux workstation that synchs its time to a Windows XP machine running w32time. The version of ntpdate is 4.2.0.a running on Linux kernel 2.6.17.6. It... (0 Replies)
Discussion started by: rathauneek
0 Replies
LEARN ABOUT V7
ntp.keys
ntp.keys(5) File Formats ntp.keys(5)NAME
ntp.keys - NTP symmetric key file format configuration file
SYNOPSIS
[--option-name] [--option-name value]
All arguments must be options.
DESCRIPTION
This document describes the format of an NTP symmetric key file. For a description of the use of this type of file, see the "Authentica-
tion Support" section of the ntp.conf(5) page.
ntpd(8) reads its keys from a file specified using the -k command line option or the keys statement in the configuration file. While key
number 0 is fixed by the NTP standard (as 56 zero bits) and may not be changed, one or more keys numbered between 1 and 65535 may be arbi-
trarily set in the keys file.
The key file uses the same comment conventions as the configuration file. Key entries use a fixed format of the form
keyno type key opt_IP_list
where keyno is a positive integer (between 1 and 65535), type is the message digest algorithm, key is the key itself, and opt_IP_list is an
optional comma-separated list of IPs where the keyno should be trusted. that are allowed to serve time. Each IP in opt_IP_list may con-
tain an optional /subnetbits specification which identifies the number of bits for the desired subnet of trust. If opt_IP_list is empty,
any properly-authenticated message will be accepted.
The key may be given in a format controlled by the type field. The type MD5 is always supported. If ntpd was built with the OpenSSL
library then any digest library supported by that library may be specified. However, if compliance with FIPS 140-2 is required the type
must be either SHA or SHA1.
What follows are some key types, and corresponding formats:
MD5 The key is 1 to 16 printable characters terminated by an EOL, whitespace, or a # (which is the "start of comment" character).
SHA
SHA1
RMD160 The key is a hex-encoded ASCII string of 40 characters, which is truncated as necessary.
Note that the keys used by the ntpq(8) and ntpdc(8) programs are checked against passwords requested by the programs and entered by hand,
so it is generally appropriate to specify these keys in ASCII format.
FILES
/etc/ntp.keys the default name of the configuration file
SEE ALSO ntp.conf(5), ntpd(1), ntpdate(1), ntpdc(1), sntp(1)AUTHORS
The University of Delaware and Network Time Foundation
COPYRIGHT
Copyright (C) 1992-2017 The University of Delaware and Network Time Foundation all rights reserved. This program is released under the
terms of the NTP license, <http://ntp.org/license>.
BUGS
Please send bug reports to: http://bugs.ntp.org, bugs@ntp.org
NOTES
This document was derived from FreeBSD.
This manual page was AutoGen-erated from the ntp.keys option definitions.
4.2.8p13 20 Feb 2019 ntp.keys(5)