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Questions tagged [ntpd]

The Network Time Protocol daemon (NTPd) is a daemon program that synchronizes the system time with time servers using the Network Time Protocol (NTP).

1 vote
1 answer
38 views

Comparing Solaris NTP and MacOS SNTP results? Is this accurate time?

What are expected values for offset and jitter from NTP? I have Solaris 11.4 in a VM with NTP configured and am comparing Solaris time stats to my Mac. I notice that MacOS sntp -sS time.apple.com ...
atod's user avatar
  • 155
0 votes
2 answers
874 views

NTP client cannot sync date from a specific Server

I want to create a NTP server, and my clients could sync date from this Server. So I add restrict policy in my server, and then restart the NTP service to my it works as a NTP server. Then I add this ...
Dodge_X's user avatar
1 vote
1 answer
168 views

Where can I find the configuration/setting for NTP to explain the specific behavior observed in an NTP client?

I have recently been doing a specific timing analysis of the performance of NTP under controlled conditions.  The experiment I performed was conceptually quite simple.  I have an NTP server running ...
Denis Barkats's user avatar
1 vote
2 answers
619 views

Why is the * symbol taking a long time to show up in 'ntpq -p' output?

I'm working on a C application that requires NTP time to be synchronized on the host before proceeding. I've essentially written a wrapper C function that executes the command ntpq -p If the output ...
Izzo's user avatar
  • 1,013
0 votes
1 answer
2k views

OpenNTPd not working in alpine Linux

In a Clean Alpine Linux install run apk add openntpd service openntpd start rc-update add openntpd Then modifiy the /etc/ntpd.conf to # $OpenBSD: ntpd.conf,v 1.16 2019/11/06 19:04:12 deraadt Exp $ # #...
Delfin's user avatar
  • 150
0 votes
0 answers
271 views

ntpd requires stripping out the HEX: prefix from SHA1 and SHA256 hex keys to interwork with chrond server

I am new to this business, and could not find the answers to the following: In order for ntpd client to sync up with chronyd server using a hex key value, I found that I need to strip out the HEX: ...
Ramsey's user avatar
  • 1
0 votes
1 answer
2k views

How to force update NTP date/time on a router?

The log of an Asus router with Padavan firmware (might be similar to OpenWrt) showed: Dec 4 16:06:20 NTP Client: Synchronizing time to 0.nl.pool.ntp.org. Oct 24 18:18:18 NTP Client: System time ...
Pro Backup's user avatar
  • 5,124
1 vote
1 answer
285 views

How do I remove ntpd from the final image with my own recipe?

I want to get rid of all ntpd related stuff from my yocto linux image. Currently I include the meta-openembedded layer, which is responsible that the NTP service ntpd is installed on my final image. ...
schande's user avatar
  • 115
1 vote
1 answer
127 views

ntpd local clock not immediately usable at boot

When configuring an NTP server with only the local clock, the server isn't usable to clients until over three minutes after ntpd starts by default. This is with "server 127.127.1.0 prefer". ...
Niklas Angare's user avatar
0 votes
1 answer
346 views

Force NTP step whenever the Internet comes up

Assume there is a PC with dead CMOS battery and unreliable Internet connection. As far as I understand, both chrony and ntpd try to correct huge time differences (years) once – upon startup, – but ...
ScumCoder's user avatar
  • 153
0 votes
0 answers
93 views

Ntpd client strange behavior

Jetson NX with latest Jetpack, NTP Ver. 4.2.8p10 I have some pools in /etc/ntp.conf (0.europe.pool.ntp.org) When I try ntdate -q 0.europe.pool.ntp.org all is ok But there is nothing except one ...
Mike Mint's user avatar
0 votes
1 answer
1k views

Is there a way for accurate timekeeping on Linux/Debian without NTP/Internet?

The only way I could get a working clock on Debian is by using NTP to sync the clock as described here. Is there a way to have a reliably accurate clock without NTP and without any Internet connection?...
mYnDstrEAm's user avatar
  • 4,846
1 vote
1 answer
246 views

How can I determine the current reliability [correctness] of the system time?

I'm working on a project which will acquire a lot of timestamped data at fairly high resolution (50 samples per second) over a very long period of time (years). The solution includes various failover ...
Philip Couling's user avatar
0 votes
0 answers
631 views

How to change the NTP servers that the VMware Esxi hypervisor uses?

I am trying to change the NTP servers that the VMware Esxi hypervisor uses. The system I am using is: [root@machine:~] esxcli system version get Product: VMware ESXi Version: 6.0.0 Build: ...
Léa Massiot's user avatar
1 vote
2 answers
3k views

NTP (NTPSec-1.2.2) client is able to sync time from NTP server even if the server does not switches from candidate to become system peer

I have a NTP setup (client-server association) where on the client side, I have below lines(among others) in ntp.conf: # This should be maxclock 7, but the pool entries count towards maxclock. tos ...
Piyush Singh's user avatar

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