Questions tagged [ntp]
The Network Time Protocol, is used to synchronize system clocks to precision time servers on the internet or locally connected devices such as a GPS.
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Why must the ntp server using the local clock use the default loopback ip (127.127.1.0) ？
It seems that the ntp server using the local clock must use the default loopback ip address(127.127.1.0).
If I use the local ethernet ip address for the ntp server as the source local clock, it just ...
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Timedatectl output does not change after running ntpdate command in Kali Linux
I am currently doing a pen testing CTF challenge on HacktheBox.com (HTB) that involves manipulation of Kerberos TGT tickets so need to sync my local system time on my Kali Linux instance with the ...
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Why the ntpq -c subcmds outputs nothing received, but still can properly sync its time
Environment: RHEL 6.4 with ntp-4.2.6p5-15.el6_10.x86_64
Question: the following ntp client can sync its time to the remote ntp server, but why it cannot run the ntpq -c subcmds with the remote ntp ...
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Strange behaviour probably related to time syncing
I have a raspberry pi running Raspbian bullseye. On it, I have a software installed that does the following every 30 seconds:
logs data to a mariadb database
publishes the data via a rest api
...
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NTP client on Compact-RIO RT linux system
I'm trying to synchronize the time of my National Instruments real time system (model Crio 9053) running a Linux OS. I tried a ntpdate 192.168.10.3 command and this working well, but after that the ...
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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 ...
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ntptrace always outputs the error message "Invalid association ID specified" at the end
It seems that this "error" should not be at least a bug within the ntptrace program since we have run it under the RHEL 5.x/6.x with the same "error" result.
So my questions are ...
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Date is incorrect in wifi : system clock synchronization is not active
I have compiled a read-only rootfs image with yocto for my raspberrypi4. I have noticed that my date is incorrect uniquely in wifi.
Indeed when I type the command timedatectl status I have the ...
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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 ...
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chrony takes many minutes to read refclocks after boot
I'm looking to provide precise time to a Raspberry Pi 4 without internet via a UBLOX GNSS module that sends NMEA sentences to /dev/serial0 and a pulse-per-second (PPS) signal to /dev/pps0.
All this ...
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Chrony is not sync with date command
I paused the virtual machine on the VM and disconnected its internet connection without rebooting the system. When I started the system from sleep mode without rebooting, the system clock continued ...
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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 ...
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Chrony's "sources with unknown address" in `activity` and `sources -a` when using NTP Pool Servers
I found chronyc's activity command outputting something like this:
chronyc> activity
200 OK
5 sources online
0 sources offline
0 sources doing burst (return to online)
0 sources doing burst (return ...
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Purpose of high stratum values for the local clock (fudge option)
In the NTP configuration, what is the purpose of specifying high stratum values for the local clock?
fudge 127.127.1.0 stratum 10
Correct me if I'm wrong: the server will rely anyway on the ...
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Understanding NTP stratum
In Linux (RHEL 7+) how can I get the stratum value of an NTP server I had specified to use in /etc/chrony.conf ?
For the List of Top Public Time Servers if that is correct, some are identified as ...
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