David Woolley wrote:
The basic problems with running ntpd on VMs are that
simulated real time
can run at variable rates, compared with true real time,
and there can
be large scheduling delays, which compromise the accuracy of
offset measurement.
What means simulated real time can run at
Do you think it's good idea install time server into guest Linux machine ?
I
read something time and I think to use physical machine, it's right ?
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unruh un...@invalid.ca ha scritto nel messaggio
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vers is the same.
It seems to now, and then that machine becomes loaded, with one of the
other virtual machine taking up loads of time, and suddenly your time
has gone to hell. This is how you want a
Which entry I have to add to ntp.conf to increase log level for daemon ? I
found no documents about it, I can add only '-d' or '-D' option to 'ntp' but
only if I run EXE file directly from shell.
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My NTP server has strange problem and my clients cannot update their time
clock.
My NTP server is Linux and NTP version is 4.2.0.a
This NTP server is a virtual machine (by P2V) but few months ago it was
working fine.
My clients get following msg when I run ntpd daemon: 'no server suitable for
I converted physical machine to virtual one, where there is NTPd service.
My
ESX host is running several guest OS included this NTP server.
Can it be this
one the problem ? Virtualization ? I'd like to know if ntpd adjusts only OS
time or it adjust hardware clock too.
In latter case if it
This NTP server is a virtual machine (by P2V) but few months ago it was
working fine.
Time control on a virtual machine is in general terrible. You
should be
having the underlying OS running ntp and having your virtual OS
getting
the time from that underlying OS.
So ntpd service, which gives
If I have 3 internal NTP servers, what do you think if my clients have all
these 3 servers in their configuration ?
According to '5.3.2. Why should I have
more than one clock?' in
'http://www.ntp.org/ntpfaq/NTP-s-algo-real.htm#Q-NTP-ALGO
I read 2 servers, it's worst case, but also 3...
0.11
127.127.1.1 127.127.1.1 10 l8 64 377 0.000.000 10.01
I'm worried because after many months I wouldn't like to find the same
behaviour.
I have no other software to discipline time.
Riccardo Castellani
wrote:
I can see usually offset increases until 700 or
800
What do you think if I set drift file to '0' value ?
Do you think this ntp
behaviour happens again ?
I'm able not to understand if my problem is hardware
clock frequency which ntp cannot deal !
Riccardo Castellani writes:
I
can see usually offset increases until 700 or 800 and it keeps
Subject: Re: [ntp:questions] Offset is always increasing
On 2013-05-23, Riccardo Castellani ric.castell...@alice.it wrote:
I can see usually offset increases until 700 or 800 and it keeps
this
value,
It keeps this value means it's stable for many months, it's doesnt change
800 what
My thought this NTP architecture :
- n.1 server Linux (both on public and on private network) and It contains
n. 4 NTP servers having stratum 1. This server gives time only to following
servers:
- n.3 server blade HP-UX where each server points to NTP server Linux. These
3 servers give time to
Ok, but I want to remove all 3 following lines from my HP-UX server ?
server 127.127.1.0
fudge 127.127.1.0
restrict 127.127.1.0 mask 255.255.255.255
- Original Message -
From: Rob nom...@example.com
Newsgroups: comp.protocols.time.ntp
To: questions@lists.ntp.org
Sent: Thursday,
To: questions@lists.ntp.org
Sent: Thursday, May 23, 2013 9:44 PM
Subject: Re: [ntp:questions] Offset is always increasing
Riccardo Castellani ric.castell...@alice.it wrote:
Ok, but I want to remove all 3 following lines from my HP-UX server ?
server 127.127.1.0
fudge 127.127.1.0
restrict 127.127.1.0
To: questions@lists.ntp.org
Sent: Thursday, May 23, 2013 10:36 PM
Subject: Re: [ntp:questions] Offset is always increasing
On 2013-05-23, Riccardo Castellani ric.castell...@alice.it wrote:
You thought right, xntpd says synchronisation lost every 20 minutes,
drift
file is about 855, xntpd daemon
.
(unfortunately many
manufacturers put those lines in example configs)
on 21/05/2013 14:31,
Riccardo Castellani wrote:
n.4 srv Internet-- server A
server A --
server B
server
A -- server C
A is my internal source
B,C are
cluster machine so hardware
is reliable but I don't want to present
at
the end and subtract the offset at the beginning then divide by the time
between the start and the end. That will give you the drift rate. If that
rate is larger than 500 parts per million, then NTP cannot correct the
clock.
On 05/21/13 07:57, Riccardo Castellani wrote:
I'm using n. 1 ntp server
, 2013 10:52 PM
Subject: Re: [ntp:questions] Offset is always increasing
Riccardo Castellani wrote:
server 127.127.1.1
fudge 127.127.1.1 stratum 10 # show poor quality
Remove these until you get it working, and then only re-add them if the
system is serving time to downstream systems and you
I tested 3 identical server with the same hardware, after one day offset is
the same value.
I have to reset drift file ? Now is 855.
- Original Message -
From: Rob nom...@example.com
Newsgroups: comp.protocols.time.ntp
To: questions@lists.ntp.org
Sent: Wednesday, May 22, 2013 6:15
@lists.ntp.org
Sent: Wednesday, May 22, 2013 10:50 PM
Subject: Re: [ntp:questions] Offset is always increasing
Riccardo Castellani wrote:
Remove these until you get it working, and then only re-add them if the
system is serving time to downstream systems and you really understand
why
you are using them
I'm using n. 1 ntp server (XNTPD daemon on HP-UX, called FORCLIENTS,
192.168.1.240) for my clients and I'm obtaining the message
synchronization
lost about every 20 minutes.
Source time is another server (MASTER) on my lan
which updates its time
directly from Internet servers.
MASTER is OK
What do you think about this NTP configuration for my company ?
I have n.1 NTP
server called 'A' (which is among private and pubblic network) and it retrieves
time from 4 time servers on Internet.
I have n.2 NTP server called 'B' and 'C'
(which are in private network) and they are used from
This is the server you want your clients to sync to, isn't it?
Regards,
Ed
-Original Message-
From: questions-bounces+edward.mischanko=arcelormittal@lists.ntp.org
[mailto:questions-
bounces+edward.mischanko=arcelormittal@lists.ntp.org] On Behalf Of
Riccardo Castellani
Sent: Tuesday, May 21
[mailto:questions-
bounces+edward.mischanko=arcelormittal@lists.ntp.org] On Behalf Of
Riccardo Castellani
Sent: Tuesday, May 21, 2013 6:58 AM
To: questions@lists.ntp.org
Subject: [ntp:questions] Offset is always increasing
I'm using n. 1 ntp server (XNTPD daemon on HP-UX, called FORCLIENTS
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