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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).

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

Website: http://www.ntp.org

Man page: http://linux.die.net/man/8/ntpd

Wikipedia: http://en.wikipedia.org/wiki/Ntpd

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NTP synchronized clock alongside the system clock

Does NTP daemon(ntpd) provide some sort of virtual clock that it disciplines and serves, but not touch the system clock? Goal: On a realtime Linux OS, have a NTP synchronized clock alongside of the system clock, so that ntp time changes won't cause…
Vikyboss
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Is it possible for NTP to have two system peers at the same time?

In some rare cases, ntpq -p reports here that it has two system peers, like this (IPs and results anonymized): remote refid st t when poll reach delay offset …
oliver
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Why is the NTP local fudge server no longer reachable?

For many years I have had: server 127.127.1.0 # local clock fudge 127.127.1.0 stratum 10 In my /etc/ntp.conf configs - it always worked as I expected it to: ie. was mostly useless but for those odd times where no other server is reachable it was…
DanSut
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NTP: Should I configure NTP step-tickers in a domain which uses local NTP servers?

I've bumped into something which is called "NTP step tickers" and read about it in this article, but I'm not sure if it's required in a domain which includes local NTP servers. It seems like it replaces /etc/ntp.conf configuration file with…
Itai Ganot
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UDel ntpd - completely disable time server discovery

I configured UDel ntpd (version 4.2.6.p5) as a client to three servers operated by my organization, and (I thought) no one else. server xx.yy.zz.1 iburst server xx.yy.zz.2 iburst server xx.yy.zz.3 iburst restrict default ignore restrict xx.yy.zz.1…
zwol
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CentOS 5.5 32 bit "service ntpd restart" issue or not?

I have CentOS 5.5 32 bit. I have a service provider that enables NTP on their routers. They have checked and doubled check their access list and I can ping the time servers but I'm getting a strange error.I have set up NTP and my conf file looks…
Bob
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CentOS 7 ntpd not synchronize with AD domain controller

i've a problem with time syncronization of a CentOS 7 host with a Windows 2008 R2 Domain controller. If I use the command ntpdate -u host.domain the synchronization is ok. But using ntpd the time is always the same, here the result of the command…
Bartok
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ntpd logging debug to ntpd.log

using ntpd 4.2.6p5 on redhat 6.5 How do I configure /etc/ntp.conf to generate debug messages to logfile? in /etc/ntp.conf I have logfile /var/log/ntpd.log but that only does very basic entries. Using '-d' outputs debug messages to the console,…
user2062463
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Access NMEA reference clock and GPS position simultaneously

I noticed two approaches to get an accurate time from GPS (with PPS). Using ntpd either with NMEA reference clock or Shared Memory Driver My problem: I want to have a very accurate time and access to GPS position data. Therefore using Shared…
wenzul
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CentOS configure ntpd to serve DST/localtime

I know that ntp uses UTC and the clients have to manage any DST and timezone differences on their own. The problem I have is that several noname ip cameras have a non-working DST implementation, and randomly add/subtract hours, resulting in almost…
Tom
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How should I manage and troubleshoot NTP issues?

For some time now I've been fighting with some NTP issues in my company's network and I'm having a hard time to understand how the commands combine with the service. For example: In the server's /etc/ntp.conf there's a line: server…
Itai Ganot
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SES time sync error

My SES setup was running fine for the last 6 months without any issues. All of a sudden it stopped working yesterday and I'm gettinng the infamous time sync error. Naturally I assumed ntpd had stopped, but to my surprise when I checked the process…
skmvasu
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ntp is not syncing on centos server but gets response from remote server

I have googled for days before asking and I feel like I have tried everything but ntp is still not updating the time of the system automatically. I have left it running for days and still I get the following output: [root@server1 etc]# ntpq -p …
Uberswe
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ntp.conf function and format for server keyword

I have 4 redhat boxes that are each sync'ed by their own arbiter gps clock. These are acting as time sources for the rest of my network. Can I include all four boxes in the peer statements in ntp.conf, so I only have to deal with one ntp.conf, as…
user52874
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Gentoo server time issue, can't manually set time, NTPD won't correct, too big of a time difference

So, my server is living in the future, unfortunately I can't get lottery numbers, or stock picks out of it. It thinks this is the time: Thu Nov 7 04:07:18 EST 2013 Not correct, I tried to set the time manually via date in a few ways # date -s "06…
kevingreen
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