My Linux NTP client queries 'time' by source port '123', can I change this
number into unprivileged one ?
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"unruh" ha scritto nel messaggio
news:xzI_t.106385$_q4.85...@fx01.iad...
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 server to behave?
S
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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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 "v
>> 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
if it adjusted hardwrae
clock it shuld modify hardware clock directly on ESX server (where there are
running 0 virtual machine) ?!
>Harlan Stenn wrote:
>Riccardo
- is this some sort of "we've only qualified OS version foo
>but we need to run
on new hardware which does not sup
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
s
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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h
My Linux NTP server, which gives time to all my servers, has a strange
behavior because when I set clock by 'ntpdate' command and later ntpd starts
I can see 'offset' value increases until to these value:
remote refid st t when poll reach delay offset
jitter
===
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...
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.
(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 h
Sent: Thursday, May 23, 2013 10:36 PM
Subject: Re: [ntp:questions] Offset is always increasing
On 2013-05-23, Riccardo Castellani wrote:
You thought right, xntpd says "synchronisation lost" every 20 minutes,
drift
file is about 855, xntpd daemon is running from about 1 year.
In thes
To:
Sent: Thursday, May 23, 2013 9:44 PM
Subject: Re: [ntp:questions] Offset is always increasing
Riccardo Castellani 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 mask 255.255.255.255
Yes. Never put th
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"
Newsgroups: comp.protocols.time.ntp
To:
Sent: Thursday, May 23, 2013 8:20 PM
Subject: Re: [ntp:que
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 cli
Re: [ntp:questions] Offset is always increasing
On 2013-05-23, Riccardo Castellani 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? if the offset is greater th
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 u
u9 64 377 0.61 -0.3500.11
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:
>>>
013 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. Leaf systems never need it a
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"
Newsgroups: comp.protocols.time.ntp
To:
Sent: Wednesday, May 22, 2013 6:15 PM
Subject: Re: [ntp:questions] Offset is
otocols.time.ntp
To:
Sent: Tuesday, May 21, 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 serv
to TOD
chip and that may be part of the problem. Otherwise, take the offset 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 corre
dward.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,
192.168.1.240) for my clien
ur 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, 2013 6:58 AM
To: question
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 cli
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 usage of 'ntpd -qd' command or 'ntpd' daemon
for synchronization for client ?
What differences ?
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Waht can you say about this message in message log ?
1-
ntpd: ntpd startup succeeded
ntpd[19428]: signal_no_reset: signal 13 had flags 400
ntpd[19428]: precision = 11 usec
ntpd[19428]: kernel time discipline status 0040
ntpd[19428]: running as uid(38)/gid(38) euid(38)/egid(38)
2-
ntpd[19428]
If I want to set 2 time server (main and backup), What's typical
configuration for ntpd client for linux ?
If I had:
restrict default ignore
restrict 127.0.0.1
restrict Main nomodify nopeer notrap noquery
restrict Backup nomodify nopeer notrap noquery
server Main
server Backup
I see there are 2
On 14 Gen, 22:24, Steve Kostecke wrote:
> "ric.castell...@alice.it" said:
>
> > I want to use ntpd as a daemon on client to synchronize to my NTP
> > server of company lan.
> > Can I avoid ntpd service doesn't listen to port 123 on this client ?
> > I'd like using only this service for synchronizi
I want to use ntpd as a daemon on client to synchronize to my NTP
server of company lan.
Can I avoid ntpd service doesn't listen to port 123 on this client ?
I'd like using only this service for synchronizing to ntp server, but
no listen port !
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quest
How can I set ntp Linux client to retrieve time from my ntp internal
service ?
By ntpd service in /etc/init.d or by inserting 'ntpd' in crontab ?
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How can I set ntp Linux client to retrieve time from my ntp internal
service ?
By ntpd service in /etc/init.d or by inserting 'ntpd' in crontab ?
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On 31 Dic, 15:49, Terje Mathisen <"terje.mathisen at tmsw.no"> wrote:
> RICCARDO wrote:
>
> > I scheduled process in crontab on all machines:
> > 00 05 * * * /usr/sbin/ntpd -qg
>
> > I can't understand where it was problem because if now I run ntp
I can note on several Linux servers (Fedora Core) 5 ntpd processes .
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1981 0.0 0.2 2556 2552 ?SL Dec16 0:00 /usr/
sbin/ntpd -qg
root 4186 0.0 0.2 2900 2896 ?SL Dec17 0:00 /usr/
sbin/
On 27 Lug, 09:07, "Maarten Wiltink"
wrote:
> "RICCARDO" wrote in message
>
> news:cc308ec7-ac80-4bcd-ae55-b0d8c527b...@u11g2000vbd.googlegroups.com...
>
> > If I put my Win XP client into Microsoft domain, it will synchronize
> > to my domai controlle
If I put my Win XP client into Microsoft domain, it will synchronize
to my domai controller ? Where I can verify this configuration to be
sure it will take time from DC and not external source ?
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I'd like checking from my ntpd daemon (time server) if clients
synchronize themselves to this one.
Which tools or command can I use ?
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