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Questions tagged [ntp]

NTP stands for Network Time Protocol, and it is an Internet protocol used to synchronize the clocks of computers to some time reference.

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Windows Domain Network, Cisco 1921 ISR, and NTP

In an effort to make sure all Windows application that rely on time work (such as RDP), and to make sure logging between computers and router are using the same times, I would like to use NTP technology between my Cisco router, my domain…
Kevin
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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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AWS - ELB - NTP - Unable to forward UDP Traffic?

I am trying to setup two micro-instances behind an internal ELB which will handle mundane tasks such as central logging and NTP queries, but come to realize that ELB doesn't support UDP forwarding. After some searching I came across this article,…
Mike Purcell
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ntpdate on ec2: no server suitable for sychronization

I'm trying to turn NTP on for a handful of EC2 instances inside a VPC, starting with ntpdate, since my server is pretty far off and I don't want it to slew. I'm running into the 'no server suitable for synchronization' error: bash-4.1$ sudo ntpdate…
LizH
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Windows 2012 R2 NTP server Unable to sync with Cisco Nexus

I am the PDC Admin, The Windows NTP server is set correctly, we have 5 different time sources set. We are able to sync with 2 of those time sources and other external time sources such as ntp.org (Below is the config). We know time is able to sync,…
Jedi Administrator
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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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NTP and iptables for time syncing within and across datacenter locations

I have several linux (Debian) servers across two data centers located on the east and west coast of the US. I picked one server from each location to be a NTP server. The NTP server syncs time with the 0-3.us.pool.ntp.org servers. That seems to be…
unixyellow1
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crypto_setup: host key file not found or corrupt

I need to deploy a ntp server with key authentication. I have Ubuntu 14.04.2 server x86_64 as ntp server and CentOS 6.7 x86_64 as client for test. For setup my ntp server I used this guide. But I have some issue with this setup. After generating…
alexBl
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Error: Failed to apply catalog: Parameter name failed on Package[ntp]:

I am getting the following error while running puppet: Error: Failed to apply catalog: Parameter name failed on Package[ntp]: Name must be a String not Array at /etc/puppet/modules/ntp/manifests/install.pp:4 $ cat install.pp class ntp::install…
Edwin Reed-Sanchez
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NTP server acting weird

I have an NTP server on the network that is acting very weird. I have not changed any of the ntpd.conf settings. Its a debian box and I did a regular install. I have an NTP client on the network. If I run ntpq -p "192.168.1.5" I get "timed out,…
John McA
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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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ntp synchronize time between peers

I am a newbie, so please bear with me. I have a network of around 10 computers for which I want to synchronize their time up to millisecond precision. The computers do not have Internet connection. The number of computes that is on the network…
user2835098
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Setting time back on a production linux server

I am having an issue with the time on a production linux server being 2 hours fast. I need the time to be accurate for a particular project I'm working on, but am a little nervous to change it, as I'm not sure the ramifications of this. From my…
bkildow
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NTP can't synchronise

Okay so I tried syncing a windows clients clock to the ubuntu ntp server i just set up, but it gets a time out, when trying. So I went on the ubuntu server and looked at syslog: Apr 10 13:15:01 nyborg ntpd[10608]: ntp_io: estimated max descriptors:…
Tomas
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